/*
 * Tema & tipografi tambahan.
 *  - Tema terang (default): html[data-theme="light"], termasuk blok kode, editor, dan visualisasi.
 *  - Tema gelap tetap tersedia lewat tombol di navbar.
 *  - Mode baca kode layar penuh (.is-fullcode).
 */

/* ═══════════════════════════════ Tema terang ═══════════════════════════════ */
html[data-theme="light"] {
    color-scheme: light;

    --bg: #ffffff;
    --bg-2: #f7f8fc;
    --panel: #ffffff;
    --panel-2: #f7f8fc;
    --panel-3: #eef2ff;
    --border: #e6e8f0;
    --border-soft: #eef0f6;
    --text: #374151;
    --text-strong: #1e1b4b;
    --muted: #6b7280;
    --faint: #9ca3af;

    --primary: #3730a3;
    --primary-2: #2563eb;
    --primary-soft: rgba(55, 48, 163, 0.1);
    --cyan: #0d9488;
    --cyan-soft: rgba(13, 148, 136, 0.12);
    --amber: #b86e00;
    --amber-soft: rgba(214, 140, 18, 0.12);
    --green: #1d8a4a;
    --green-soft: rgba(29, 138, 74, 0.1);
    --red: #c93434;
    --red-soft: rgba(201, 52, 52, 0.09);
    --pink: #c02a74;

    --easy: #1d8a4a;
    --medium: #b86e00;
    --hard: #c93434;

    --grad-graph: #0f766e;
    --grad-dp: #c2410c;
    --grad-primary: #3730a3;
    --shadow: none;

    --canvas: #ffffff;
    --code-bg: #ffffff;
    --code-text: #1f1f1f;
    --code-inline: #a31515;
    --text-soft: #363a43;
    --svg-text: #23262d;
    --panel-deep: #f1efe9;
    --line-strong: #c9c5ba;
    --edge: #a9a597;
    --hl-text: #8a5a00;
    --hl-fill: #fff3c4;
    --violet-fill: #e4e9fb;
    --on-amber: #3b2500;
    --red-text: #b42323;
    --green-text: #17703c;
    --violet-text: #2448ad;
    --amber-text: #8a5a00;
    --blocked-a: #f6dede;
    --blocked-b: #efcfcf;
    --tint-rgb: 0, 0, 0;
    --glass-rgb: 255, 255, 255;
    --node-a: #ffffff;
    --node-b: #ecebe6;
    --node-text: #111318;

    --syn-comment: #008000;
    --syn-keyword: #0000ff;
    --syn-string: #a31515;
    --syn-number: #098658;
    --syn-type: #267f99;
    --syn-title: #795e26;
    --syn-meta: #af00db;
}

html[data-theme="light"] body {
    background: var(--bg);
}

/* Hilangkan cahaya/gradien dekoratif pada tema terang */
html[data-theme="light"] .lead-box,
html[data-theme="light"] .hero,
html[data-theme="light"] .auth-wrap,
html[data-theme="light"] .walkthrough .wt-head,
html[data-theme="light"] [class*="hero"] {
    background-image: none !important;
}

html[data-theme="light"] .proof {
    background: transparent;
    border: 0;
    padding: 0;
}

html[data-theme="light"] .proof p {
    margin: 0 0 12px;
    padding: 14px 16px;
    background: #ffffff;
    border: 1px solid #e6e8f0;
    border-left: 3px solid #3730a3;
    border-radius: 12px;
}

.others-code {
    margin: 10px 0;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel);
}

.others-code summary {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    cursor: pointer;
    font-size: 14px;
}

.others-code summary span {
    color: var(--muted);
    font-size: 12px;
}

.others-code pre {
    margin: 0;
    padding: 12px 14px 16px;
    overflow: auto;
    border-top: 1px solid var(--border-soft);
    background: var(--code-bg);
    color: var(--code-text);
    font-size: 13px;
}

html[data-theme="light"] .proof em {
    color: #0f766e;
}

html[data-theme="light"] .dp-mini span.dep {
    color: #0f766e;
}

html[data-theme="light"] .prose code,
html[data-theme="light"] .statement code,
html[data-theme="light"] .callout code,
html[data-theme="light"] .step-card code,
html[data-theme="light"] .quiz code,
html[data-theme="light"] .proof code {
    background: #eef2ff;
    border: 1px solid #c7d2fe;
    color: #1e1b4b;
}

/* Simpul graph: lingkaran putih bertepi gelap */
html[data-theme="light"] .dg-node circle,
html[data-theme="light"] svg.graph .node > circle {
    stroke: #5c606b;
}

html[data-theme="light"] .dg-node text {
    fill: var(--node-text);
}

/* ═══════════════════════════════ Sintaks kode (highlight.js) ═══════════════════════════════ */
.hljs {
    color: var(--code-text);
    background: transparent;
}

.hljs-comment,
.hljs-quote {
    color: var(--syn-comment);
    font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-built_in {
    color: var(--syn-keyword);
}

.hljs-string,
.hljs-regexp,
.hljs-addition {
    color: var(--syn-string);
}

.hljs-number,
.hljs-symbol {
    color: var(--syn-number);
}

.hljs-type,
.hljs-class .hljs-title,
.hljs-title.class_ {
    color: var(--syn-type);
}

.hljs-title,
.hljs-title.function_,
.hljs-section {
    color: var(--syn-title);
}

.hljs-meta,
.hljs-meta .hljs-keyword,
.hljs-meta .hljs-string {
    color: var(--syn-meta);
}

.hljs-deletion {
    color: var(--red-text);
}

/* ═══════════════════════════════ Tipografi materi yang lebih tenang ═══════════════════════════════ */
/* Judul bagian diberi nomor, bukan ikon emoji */
.lesson-main {
    counter-reset: sec;
}

.lesson-section > h2 .sec-icon {
    display: none;
}

.lesson-section > h2::before {
    counter-increment: sec;
    content: counter(sec, decimal-leading-zero);
    min-width: 30px;
    font: 600 13px/1 var(--mono);
    color: var(--faint);
    padding-top: 4px;
    align-self: flex-start;
}

.lesson-section > h2 {
    align-items: baseline;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-soft);
}

/* Callout: label teks di kiri menggantikan emoji */
.callout {
    border-left-width: 3px;
}

.callout .callout-icon {
    font-size: 0;
    min-width: 46px;
}

.callout .callout-icon::before {
    display: inline-block;
    font: 700 10.5px/1.9 var(--sans);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    content: "Catatan";
    color: var(--muted);
}

.callout.key .callout-icon::before {
    content: "Inti";
    color: var(--primary-2);
}

.callout.tip .callout-icon::before {
    content: "Tips";
    color: var(--cyan);
}

.callout.warn .callout-icon::before {
    content: "Awas";
    color: var(--amber);
}

/* Penanda level: titik berwarna, bukan emoji */
.lvl::before,
.level-band .lb-icon::before {
    content: "";
    display: inline-block;
    width: 8px;
    height: 8px;
    margin-right: 6px;
    border-radius: 50%;
    background: currentColor;
    vertical-align: 1px;
}

.level-band .lb-icon {
    font-size: 0;
}

.level-band .lb-icon::before {
    width: 12px;
    height: 12px;
    margin: 0;
}

.lvl-band-1 .lb-icon,
.lvl.lvl-1 {
    color: var(--green);
}

.lvl-band-2 .lb-icon,
.lvl.lvl-2 {
    color: var(--amber);
}

.lvl-band-3 .lb-icon,
.lvl.lvl-3 {
    color: var(--red);
}

/* ═══════════════════════════════ Tabel pelacakan & rumus ═══════════════════════════════ */
.recurrence {
    max-width: 76ch;
    margin: 10px 0 18px;
    padding: 14px 18px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    border-radius: 8px;
    background: var(--panel);
    font: 500 14px/1.9 var(--mono);
    color: var(--text-strong);
    white-space: pre-wrap;
    overflow-x: auto;
}

.recurrence small {
    display: block;
    font: 600 11px/1.6 var(--sans);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ═══════════════════════════════ Tombol tema ═══════════════════════════════ */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding: 0 12px;
    margin-right: 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    color: var(--muted);
    font-size: 12.5px;
    font-weight: 600;
}

.theme-toggle:hover {
    color: var(--text-strong);
    border-color: var(--line-strong);
}

.theme-toggle .t-dark,
html[data-theme="dark"] .theme-toggle .t-light {
    display: none;
}

html[data-theme="dark"] .theme-toggle .t-dark {
    display: inline;
}

/* ═══════════════════════════════ Kode layar penuh ═══════════════════════════════ */
.fullcode-btn {
    white-space: nowrap;
}

.is-fullcode {
    position: fixed !important;
    inset: 0;
    z-index: 1000;
    margin: 0 !important;
    max-width: none !important;
    border-radius: 0 !important;
    display: flex;
    flex-direction: column;
    background: var(--code-bg) !important;
    overflow: hidden;
}

html.has-fullcode {
    overflow: hidden;
}

.code-tabs.is-fullcode pre {
    flex: 1;
    max-height: none !important;
    margin: 0;
    overflow: auto;
    font-size: 15px;
    line-height: 1.75;
}

.walkthrough.is-fullcode .wt-body {
    flex: 1;
    min-height: 0;
    grid-template-columns: minmax(0, 1.5fr) minmax(320px, 1fr);
}

.walkthrough.is-fullcode .wt-code {
    max-height: none !important;
    height: 100%;
    overflow: auto;
}

.walkthrough.is-fullcode .wt-code pre {
    font-size: 15px;
    line-height: 1.75;
}

.walkthrough.is-fullcode .wt-explain {
    overflow: auto;
}

.walkthrough.is-fullcode[data-mode="all"] .wt-body {
    overflow: auto;
}

.walkthrough.is-fullcode .wt-sample,
.walkthrough.is-fullcode .wt-alt,
.walkthrough.is-fullcode .wt-intro {
    display: none;
}

/* Grid mini pada visual contoh soal */
:where(html[data-theme="light"]) .mini-grid span {
    background: #ffffff;
    box-shadow: inset 0 0 0 1px var(--border);
}

:where(html[data-theme="light"]) .mini-grid span.wall {
    background: #8d93a0;
    box-shadow: none;
}

:where(html[data-theme="light"]) .mini-grid span.land {
    background: #8cc47a;
    box-shadow: none;
}

:where(html[data-theme="light"]) .mini-grid span.water {
    background: #d3e8f6;
    box-shadow: inset 0 0 0 1px #b8d6ec;
}

/* Label simpul berwarna tetap terbaca di tema terang */
/* Simpul visualisasi di tema terang: isian lembut, label berwarna gelap */
html[data-theme="light"] {
    --ng-queued-a: #e3f6fb;
    --ng-queued-b: #a9e1ef;
    --ng-visited-a: #ece7ff;
    --ng-visited-b: #c9bcfb;
    --ng-done-a: #ddd3ff;
    --ng-done-b: #ad97f7;
    --ng-path-a: #e3fbea;
    --ng-path-b: #95e6b0;
}

html[data-theme="light"] .g-node.queued text.label {
    fill: #0b4f60;
}

html[data-theme="light"] .g-node:is(.visited, .done) text.label {
    fill: #33228a;
}

html[data-theme="light"] .g-node.path text.label {
    fill: #14532d;
}

/* Simpul diagram yang disorot: warna lembut, bukan isian gelap */
html[data-theme="light"] .dg-node.vis circle {
    fill: #e4e9fb;
    stroke: #2f5bd3;
}

html[data-theme="light"] .dg-node.cyan circle {
    fill: #d9f1f7;
    stroke: #0b7f9a;
}

html[data-theme="light"] .dg-node.green circle {
    fill: #dcf3e4;
    stroke: #1d8a4a;
}

html[data-theme="light"] .dg-node.red circle {
    fill: #fbe1e1;
    stroke: #c93434;
}

html[data-theme="light"] .dg-node.vis text {
    fill: #1e3a8a;
}

html[data-theme="light"] .dg-node.cyan text {
    fill: #0b4f60;
}

html[data-theme="light"] .dg-node.green text {
    fill: #14532d;
}

html[data-theme="light"] .dg-node.red text {
    fill: #8f1d1d;
}

.walkthrough.is-fullcode.has-focus .wt-code .wl:not(.on) {
    opacity: 0.8;
}

/* ═══════════════════════════════ Visualisasi DP lanjutan ═══════════════════════════════ */
.iv-piles {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.iv-piles span {
    min-width: 34px;
    padding: 6px 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--panel-2);
    font: 700 13px/1 var(--mono);
    text-align: center;
    color: var(--muted);
}

.iv-piles span.on {
    border-color: var(--amber);
    color: var(--text-strong);
}

.iv-piles span.left {
    border-color: var(--cyan);
    background: var(--cyan-soft);
    color: var(--text-strong);
}

.iv-piles span.right {
    border-color: var(--pink);
    background: rgba(236, 72, 153, 0.12);
    color: var(--text-strong);
}

.mini-matrix {
    border-collapse: collapse;
    font: 600 12.5px/1 var(--mono);
}

.mini-matrix th,
.mini-matrix td {
    width: 30px;
    height: 26px;
    border: 1px solid var(--border-soft);
    text-align: center;
}

.mini-matrix th {
    color: var(--faint);
    background: var(--panel-2);
}

.mini-matrix td.on {
    background: var(--amber-soft);
    color: var(--amber);
    outline: 2px solid var(--amber);
}

.bit-table td,
.bit-table code {
    font-family: var(--mono);
}

/* ═══════════════════════════════ Visualisasi: panel kode C++ lebih lebar ═══════════════════════════════ */
.lesson-layout {
    max-width: 1080px;
}

.viz-body {
    grid-template-columns: minmax(0, 1fr) minmax(400px, 44%);
}

.viz-side {
    max-height: 640px;
}

.viz:fullscreen .viz-body {
    grid-template-columns: minmax(0, 1fr) minmax(480px, 42%);
}

.pseudo.cpp {
    max-height: 340px;
    overflow: auto;
    padding: 10px 0;
    background: var(--code-bg);
    font: 12.5px/1.7 var(--mono);
    font-variant-ligatures: none;
}

.pseudo.cpp div {
    padding-right: 14px;
    color: var(--code-text);
}

.pseudo.cpp div.on {
    background: rgba(245, 158, 11, 0.16);
    color: var(--code-text);
    box-shadow: inset 3px 0 0 var(--amber);
}

.viz:fullscreen .pseudo.cpp {
    max-height: 52vh;
    font-size: 14px;
}

@media (max-width: 1100px) {
    .viz-body {
        grid-template-columns: 1fr;
    }

    .viz-side {
        max-height: none;
    }
}

.g-edge.bridge .g-line {
    stroke: var(--red);
    stroke-width: 5;
}

.g-edge.back .g-line {
    stroke: var(--cyan);
    stroke-width: 3;
    stroke-dasharray: 6 5;
}

html[data-theme="light"] .g-node.colored text.label {
    fill: #111318;
}

/* ═══════════════════════════════ Visualisasi Fondasi ═══════════════════════════════ */
.nq-board {
    display: grid;
    grid-template-columns: repeat(var(--n), 58px);
    gap: 0;
    width: max-content;
    margin: 24px auto;
    border: 2px solid var(--line-strong);
    border-radius: 6px;
    overflow: hidden;
}

.nq-cell {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    background: var(--panel);
    font-size: 30px;
    font-weight: 700;
    color: var(--violet-text);
    transition: background 0.2s;
}

.nq-cell.dark {
    background: var(--panel-3);
}

.nq-cell.hit {
    background: var(--red-soft);
}

.nq-cell.queen {
    background: var(--primary-soft);
}

.nq-cell.queen.sol {
    background: var(--green-soft);
    color: var(--green);
}

.nq-cell.try {
    background: var(--amber);
    color: var(--on-amber);
    font-size: 22px;
}

.nq-cell.try.bad {
    background: var(--red);
    color: #fff;
}

.win-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    padding: 70px 10px 30px;
}

.win-cell {
    position: relative;
    display: grid;
    place-items: center;
    width: 52px;
    height: 60px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--panel);
    font-family: var(--mono);
}

.win-cell small {
    position: absolute;
    top: 3px;
    font-size: 10px;
    color: var(--faint);
}

.win-cell b {
    font-size: 18px;
    color: var(--text-strong);
}

.win-cell.in {
    border-color: var(--cyan);
    background: var(--cyan-soft);
}

.win-cell.best {
    border-color: var(--green);
    background: var(--green-soft);
}

.win-cell.new {
    border-color: var(--amber);
    background: var(--amber-soft);
}

.win-cell.out {
    border-color: var(--red);
    background: var(--red-soft);
}

.win-cell .ptr {
    position: absolute;
    bottom: -24px;
    font: 700 12px var(--mono);
    font-style: normal;
}

.win-cell .ptr.l {
    left: 6px;
    color: var(--red);
}

.win-cell .ptr.r {
    right: 6px;
    color: var(--amber);
}

/* ═══════════════════════════════ Visualisasi deque monoton ═══════════════════════════════ */
.mq-wrap {
    display: grid;
    justify-items: center;
    gap: 8px;
    padding: 36px 12px 20px;
}

.mq-row,
.mq-dq-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mq-dq-wrap {
    margin-top: 18px;
}

.mq-lbl {
    width: 52px;
    margin-right: 4px;
    text-align: right;
    font: 600 12px var(--mono);
    color: var(--muted);
}

.mq-cell {
    width: 44px;
    height: 40px;
    display: grid;
    place-items: center;
    border: 2px solid var(--border);
    border-radius: 9px;
    background: var(--panel);
    font: 700 15px var(--mono);
    color: var(--text-strong);
    transition: background 0.2s, border-color 0.2s;
}

.mq-cell.idx {
    height: 18px;
    border-color: transparent;
    background: transparent;
    font-size: 11px;
    color: var(--faint);
}

.mq-cell.mq-na {
    color: var(--faint);
}

.mq-cell.win {
    border-color: var(--cyan);
    background: var(--cyan-soft);
}

.mq-cell.inq {
    box-shadow: inset 0 -4px 0 var(--green);
}

.mq-cell.front {
    border-color: var(--green);
    background: var(--green-soft);
}

.mq-cell.cur {
    border-color: var(--amber);
    background: var(--amber-soft);
}

.mq-cell.gone {
    border-color: var(--red);
    background: var(--red-soft);
}

.mq-dq {
    display: flex;
    gap: 6px;
    min-width: 220px;
    min-height: 52px;
    padding: 6px 10px;
    border: 2px dashed var(--border);
    border-radius: 12px;
}

.mq-dq .it {
    display: grid;
    place-items: center;
    min-width: 54px;
    padding: 3px 8px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font-family: var(--mono);
}

.mq-dq .it small {
    font-size: 10px;
    color: var(--faint);
}

.mq-dq .it b {
    font-size: 15px;
    color: var(--text-strong);
}

.mq-dq .it.front {
    border-color: var(--green);
    background: var(--green-soft);
}

.mq-dq .it.new {
    border-color: var(--amber);
    background: var(--amber-soft);
}

.mq-dq .it.gone {
    border-color: var(--red);
    background: var(--red-soft);
    opacity: 0.75;
}

.mq-dq .it.gone b {
    text-decoration: line-through;
}

.mq-empty,
.mq-note {
    align-self: center;
    font-size: 12px;
    color: var(--faint);
}

.mq-note {
    margin: 2px 0 0;
}

/* ═══════════════════════════════ Visualisasi distribusi peluang ═══════════════════════════════ */
.pb-wrap {
    display: grid;
    gap: 4px;
    padding: 26px 12px 16px;
}

.pb-title {
    margin: 10px 0 0;
    font: 600 12px var(--mono);
    color: var(--muted);
}

.pb-row {
    display: flex;
    gap: 3px;
    align-items: flex-end;
    overflow-x: auto;
    padding-bottom: 2px;
}

.pb-col {
    flex: 1 0 20px;
    display: grid;
    justify-items: center;
    gap: 2px;
    min-width: 20px;
}

.pb-bar {
    display: flex;
    align-items: flex-end;
    width: 100%;
    height: 96px;
}

.pb-bar i {
    display: block;
    width: 100%;
    min-height: 1px;
    border-radius: 4px 4px 0 0;
    background: var(--line-strong);
    transition: height 0.25s;
}

.pb-col b {
    min-height: 14px;
    font: 700 10.5px var(--mono);
    color: var(--text-strong);
    white-space: nowrap;
}

.pb-col small {
    font: 500 10px var(--mono);
    color: var(--faint);
}

.pb-col.src .pb-bar i {
    background: var(--cyan);
}

.pb-col.cur .pb-bar i {
    background: var(--amber);
}

.pb-col.cur b {
    color: var(--hl-text);
}

.pb-col.best .pb-bar i {
    background: var(--green);
}

/* ═══════════════════════════════ Visualisasi Fenwick tree ═══════════════════════════════ */
.fw-grid {
    display: grid;
    gap: 6px;
    padding: 26px 14px 18px;
}

.fw-lbl {
    align-self: center;
    text-align: right;
    padding-right: 4px;
    font: 600 11px var(--mono);
    color: var(--muted);
}

.fw-node {
    display: grid;
    place-items: center;
    padding: 4px 2px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font-family: var(--mono);
    min-width: 0;
}

.fw-node b {
    font-size: 14px;
    color: var(--text-strong);
    white-space: nowrap;
}

.fw-node small {
    font-size: 10px;
    color: var(--faint);
}

.fw-node.path {
    border-color: var(--amber);
    background: var(--amber-soft);
}

.fw-node.done {
    border-color: var(--green);
    background: var(--green-soft);
}

.fw-cell {
    display: grid;
    place-items: center;
    height: 36px;
    margin-top: 8px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font: 700 14px var(--mono);
    color: var(--text-strong);
}

.fw-cell.hl {
    border-color: var(--cyan);
    background: var(--cyan-soft);
}

.fw-cell.pt {
    box-shadow: inset 0 -4px 0 var(--amber);
}

.fw-idx {
    display: grid;
    justify-items: center;
    font-family: var(--mono);
}

.fw-idx b {
    font-size: 12px;
    color: var(--text-strong);
}

.fw-idx small {
    font-size: 10px;
    color: var(--faint);
}

/* Segment tree memakai gaya simpul Fenwick + status tambahan */
.fw-node.sg-split {
    border-color: var(--cyan);
    background: var(--cyan-soft);
}

.fw-node.sg-skip {
    opacity: 0.45;
    border-style: dashed;
}

.fw-idx.sg-in b {
    color: var(--cyan);
}

.fw-idx.sg-in {
    border-bottom: 3px solid var(--cyan);
}

.fw-idx.sg-pt {
    border-bottom: 3px solid var(--amber);
}

/* ═══════════════════════════════ Visualisasi Euclid ═══════════════════════════════ */
.eu-svg {
    display: block;
    width: 100%;
    max-height: 340px;
    margin: 18px 0 8px;
}

.eu-rest {
    fill: rgba(148, 163, 184, 0.12);
    stroke: var(--line-strong);
    stroke-width: 1.5;
}

.eu-old {
    fill: var(--cyan-soft);
    stroke: var(--cyan);
    stroke-width: 1.5;
}

.eu-cur {
    fill: rgba(245, 158, 11, 0.3);
    stroke: var(--amber);
    stroke-width: 2;
}

.eu-grid {
    stroke: var(--text-soft);
    stroke-width: 0.8;
    stroke-dasharray: 3 4;
    opacity: 0.55;
}

.eu-lbl {
    font: 700 13px var(--mono);
    fill: var(--text-strong);
    text-anchor: middle;
    dominant-baseline: central;
}

.eu-dim {
    font: 600 12px var(--mono);
    fill: var(--muted);
    text-anchor: middle;
}

.eu-table {
    width: 100%;
    border-collapse: collapse;
    font: 13px var(--mono);
}

.eu-table th,
.eu-table td {
    padding: 4px 6px;
    text-align: center;
    border-bottom: 1px solid var(--border-soft);
}

.eu-table th {
    font-weight: 600;
    color: var(--muted);
}

.eu-table td {
    color: var(--text-strong);
}

.eu-table tr.cur td {
    background: var(--amber-soft);
    font-weight: 700;
}

/* ═══════════════════════════════ Visualisasi saringan ═══════════════════════════════ */
.sv-grid {
    display: grid;
    grid-template-columns: repeat(10, minmax(0, 1fr));
    gap: 4px;
    max-width: 520px;
    margin: 20px auto 6px;
}

.sv-cell {
    position: relative;
    display: grid;
    place-items: center;
    height: 34px;
    border: 1.5px solid var(--border);
    border-radius: 7px;
    background: var(--panel);
    font: 600 13px var(--mono);
    color: var(--text-strong);
}

.sv-cell small {
    position: absolute;
    top: 1px;
    right: 3px;
    font-size: 9px;
    color: var(--faint);
}

.sv-cell.one {
    color: var(--faint);
}

.sv-cell.out {
    background: rgba(148, 163, 184, 0.14);
    color: var(--faint);
}

.sv-cell.out b {
    text-decoration: line-through;
}

.sv-cell.fresh {
    border-color: var(--red);
    background: var(--red-soft);
    color: var(--red-text);
}

.sv-cell.fresh b {
    text-decoration: line-through;
}

.sv-cell.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.35);
}

.sv-cell.prime {
    border-color: var(--green);
    background: var(--green-soft);
    color: var(--green-text);
}

/* ═══════════════════════════════ Visualisasi jalur grid ═══════════════════════════════ */
.gp-grid {
    display: grid;
    gap: 4px;
    max-width: 520px;
    margin: 26px auto 6px;
}

.gp-cell {
    display: grid;
    place-items: center;
    height: 40px;
    border: 1.5px solid var(--border);
    border-radius: 7px;
    background: var(--panel);
    font: 700 13px var(--mono);
    color: var(--text-strong);
}

.gp-cell.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.25);
}

.gp-cell.pre {
    border-color: var(--cyan);
    background: var(--cyan-soft);
}

.gp-cell.post {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.12);
}

.gp-cell.hole {
    border-color: var(--red);
    background: rgba(239, 68, 68, 0.25);
    color: var(--red-text);
}

.hs-v {
    margin-left: 1px;
    font-size: 9px;
    font-weight: 500;
    color: var(--faint);
}

.mq-wrap {
    overflow-x: auto;
}

.mq-wrap {
    justify-items: safe center;
}

.mq-wrap.compact .mq-row {
    gap: 4px;
}

.mq-wrap.compact .mq-cell {
    width: 36px;
    font-size: 13px;
}

.mq-wrap.compact .mq-lbl {
    width: 40px;
}

/* ═══════════════════════════════ Visualisasi trie ═══════════════════════════════ */
.tr-svg {
    display: block;
    width: 100%;
    max-height: 420px;
    margin: 14px 0 4px;
}

.tr-edge {
    stroke: var(--line-strong);
    stroke-width: 2;
}

.tr-edge.on {
    stroke: var(--cyan);
    stroke-width: 3.5;
}

.tr-ch {
    font: 700 13px var(--mono);
    fill: var(--muted);
    text-anchor: middle;
    dominant-baseline: central;
}

.tr-ch.on {
    fill: var(--cyan);
}

.tr-node circle {
    fill: var(--panel);
    stroke: var(--line-strong);
    stroke-width: 2;
}

.tr-node text {
    font: 700 11px var(--mono);
    fill: var(--text-strong);
    text-anchor: middle;
    dominant-baseline: central;
}

.tr-node.end circle {
    stroke: #8b5cf6;
    stroke-width: 4;
}

.tr-node.on circle {
    fill: var(--cyan-soft);
    stroke: var(--cyan);
}

.tr-node.on.end circle {
    stroke: #8b5cf6;
}

.tr-node.fresh circle {
    fill: var(--green-soft);
    stroke: var(--green);
}

.tr-node.cur circle {
    fill: rgba(245, 158, 11, 0.3);
    stroke: var(--amber);
}

/* ═══════════════════════════════ Visualisasi DSU ═══════════════════════════════ */
.dsu-svg {
    display: block;
    width: 100%;
    max-height: 300px;
    margin: 10px 0 8px;
}

.dsu-edge {
    stroke: var(--line-strong);
    stroke-width: 2;
}

.dsu-edge.on {
    stroke: var(--cyan);
    stroke-width: 3;
}

.dsu-edge.fresh {
    stroke: #8b5cf6;
    stroke-width: 3;
    stroke-dasharray: 6 4;
}

.dsu-ah {
    fill: var(--muted);
}

.dsu-node circle {
    fill: var(--panel);
    stroke: var(--line-strong);
    stroke-width: 2;
}

.dsu-node text {
    font: 700 13px var(--mono);
    fill: var(--text-strong);
    text-anchor: middle;
    dominant-baseline: central;
}

.dsu-node.on circle {
    fill: var(--cyan-soft);
    stroke: var(--cyan);
}

.dsu-node.root circle {
    fill: var(--green-soft);
    stroke: var(--green);
    stroke-width: 3;
}

.dsu-node.cur circle {
    fill: rgba(245, 158, 11, 0.3);
    stroke: var(--amber);
    stroke-width: 3;
}

/* ═══════════════════════════════ Visualisasi algoritma Mo ═══════════════════════════════ */
.mo-wrap {
    display: grid;
    gap: 12px;
    padding: 18px 8px 4px;
    overflow-x: auto;
}

.mo-row {
    display: flex;
    gap: 4px;
    justify-content: safe center;
    padding-bottom: 20px;
}

.mo-cell {
    position: relative;
    display: grid;
    place-items: center;
    width: 38px;
    height: 46px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font-family: var(--mono);
}

.mo-cell.blk {
    margin-left: 8px;
    box-shadow: -7px 0 0 -5px var(--line-strong);
}

.mo-cell small {
    font-size: 10px;
    color: var(--faint);
}

.mo-cell b {
    font-size: 15px;
    color: var(--text-strong);
}

.mo-cell.q {
    border-color: var(--amber);
}

.mo-cell.in {
    background: var(--cyan-soft);
    border-color: var(--cyan);
}

.mo-cell.add {
    background: rgba(34, 197, 94, 0.3);
    border-color: var(--green);
}

.mo-cell.del {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--red);
}

.mo-cell .ptr {
    position: absolute;
    bottom: -19px;
    font: 700 11px var(--mono);
    font-style: normal;
    color: var(--primary);
}

.mo-cell .ptr.l {
    left: 4px;
}

.mo-cell .ptr.r {
    right: 4px;
}

.mo-line {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.mo-cnt {
    display: grid;
    place-items: center;
    min-width: 34px;
    padding: 3px 6px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font-family: var(--mono);
    background: var(--panel);
}

.mo-cnt small {
    font-size: 10px;
    color: var(--faint);
}

.mo-cnt.on {
    border-color: var(--green);
    background: var(--green-soft);
}

.mo-qs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.mo-q {
    padding: 4px 8px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font: 600 12px var(--mono);
    color: var(--muted);
    background: var(--panel);
}

.mo-q.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.18);
    color: var(--text-strong);
}

.mo-q.done {
    color: var(--green-text);
}

/* ═══════════════════════════════ Visualisasi pangkat matriks ═══════════════════════════════ */
.mp-wrap {
    display: grid;
    gap: 18px;
    padding: 20px 8px 6px;
    justify-items: center;
}

.mp-bits {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.mp-bit {
    display: grid;
    place-items: center;
    width: 42px;
    padding: 4px 0;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font-family: var(--mono);
}

.mp-bit small {
    font-size: 10px;
    color: var(--faint);
}

.mp-bit b {
    font-size: 17px;
    color: var(--muted);
}

.mp-bit.one b {
    color: var(--text-strong);
}

.mp-bit.done {
    opacity: 0.55;
}

.mp-bit.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.22);
    opacity: 1;
}

.mp-mats {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
    justify-content: center;
}

.mp-mat {
    display: grid;
    gap: 6px;
    justify-items: center;
}

.mp-lbl {
    font: 700 13px var(--mono);
    color: var(--muted);
}

.mp-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(64px, auto));
    gap: 4px;
    padding: 8px 10px;
    border-left: 2px solid var(--text-soft);
    border-right: 2px solid var(--text-soft);
    border-radius: 6px;
}

.mp-grid b {
    padding: 6px 10px;
    border-radius: 6px;
    background: var(--panel-deep);
    font: 700 15px var(--mono);
    color: var(--text-strong);
    text-align: center;
}

.mp-mat.chg .mp-grid b {
    background: rgba(34, 197, 94, 0.22);
}

/* ═══════════════════════════════ Visualisasi teori permainan ═══════════════════════════════ */
.gm-wrap {
    display: grid;
    gap: 10px;
    padding: 24px 8px 6px;
    overflow-x: auto;
}

.gm-row {
    display: flex;
    gap: 5px;
    justify-content: safe center;
    flex-wrap: wrap;
}

.gm-cell {
    display: grid;
    place-items: center;
    width: 40px;
    height: 50px;
    border: 1.5px solid var(--border);
    border-radius: 9px;
    background: var(--panel);
    font-family: var(--mono);
}

.gm-cell small {
    font-size: 10px;
    color: var(--faint);
}

.gm-cell b {
    font-size: 16px;
    min-height: 20px;
    color: var(--text-strong);
}

.gm-cell.win {
    border-color: var(--green);
    background: rgba(34, 197, 94, 0.2);
}

.gm-cell.lose {
    border-color: var(--red);
    background: rgba(239, 68, 68, 0.14);
}

.gm-cell.reach {
    box-shadow: 0 0 0 3px var(--cyan);
}

.gm-cell.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.28);
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.35);
}

/* ═══════════════════════════════ Visualisasi convex hull ═══════════════════════════════ */
.hl-svg {
    display: block;
    width: 100%;
    max-height: 380px;
    margin: 8px 0 4px;
}

.hl-grid {
    stroke: var(--border-soft);
    stroke-width: 1;
}

.hl-chain {
    stroke: var(--green);
    stroke-width: 3;
}

.hl-try {
    stroke: var(--amber);
    stroke-width: 2.5;
    stroke-dasharray: 6 4;
}

.hl-drop {
    stroke: var(--red);
    stroke-width: 2.5;
    stroke-dasharray: 4 4;
}

.hl-poly {
    fill: rgba(79, 95, 214, 0.14);
    stroke: #4f5fd6;
    stroke-width: 3;
}

.hl-pt circle {
    fill: var(--panel);
    stroke: var(--muted);
    stroke-width: 2;
}

.hl-pt text {
    font: 700 12px var(--mono);
    fill: var(--text-soft);
}

.hl-pt.on circle {
    fill: var(--green);
    stroke: var(--green);
}

.hl-pt.cur circle {
    fill: var(--amber);
    stroke: var(--amber);
}

.hl-pt.drop circle {
    fill: var(--red);
    stroke: var(--red);
}

/* ═══════════════════════════════ Visualisasi Manacher ═══════════════════════════════ */
.mn-wrap {
    display: grid;
    gap: 10px;
    padding: 22px 6px 6px;
    overflow-x: auto;
}

.mn-row {
    display: flex;
    gap: 2px;
    justify-content: safe center;
}

.mn-cell {
    display: grid;
    grid-template-rows: auto auto auto;
    place-items: center;
    flex: none;
    width: 27px;
    padding: 3px 0;
    border: 1.5px solid var(--border);
    border-radius: 7px;
    background: var(--panel);
    font-family: var(--mono);
}

.mn-cell small {
    font-size: 9px;
    color: var(--faint);
}

.mn-cell b {
    font-size: 16px;
    color: var(--text-strong);
}

.mn-cell i {
    min-height: 16px;
    font-style: normal;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
}

.mn-cell.sep b {
    color: var(--faint);
    font-size: 13px;
}

.mn-cell.box {
    background: var(--cyan-soft);
    border-color: var(--cyan);
}

.mn-cell.pal {
    box-shadow: inset 0 -4px 0 var(--green);
}

.mn-cell.mirror {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.22);
}

.mn-cell.cmp {
    border-color: var(--green);
    background: rgba(34, 197, 94, 0.3);
}

.mn-cell.bad {
    border-color: var(--red);
    background: rgba(239, 68, 68, 0.2);
}

.mn-cell.cur {
    border-color: var(--amber);
    background: rgba(245, 158, 11, 0.35);
}

.z-board {
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 14px;
    width: 100%;
    padding: 18px 10px;
    overflow-x: auto;
}

.viz-stage:has(.z-board) {
    display: flex;
    align-items: center;
    justify-content: center;
}

.z-board .mn-cell {
    width: 44px;
    padding: 5px 0 3px;
}

.z-board .mn-cell b {
    font-size: 20px;
}

.z-board .mn-cell i {
    min-height: 14px;
    font-size: 12px;
}

.z-result {
    width: min(100%, 460px);
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel);
    text-align: center;
}

.z-result b {
    display: block;
    margin-bottom: 4px;
    color: var(--text-strong);
    font-family: var(--mono);
    font-size: 15px;
}

.z-result span {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.z-pair {
    display: grid;
    gap: 6px;
    width: min(100%, 460px);
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--panel-2, var(--panel));
}

.z-pair .mq-row {
    justify-content: center;
}

/* Editor cadangan saat Monaco tidak dapat dimuat (tanpa internet) */
.plain-editor {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 320px;
    padding: 12px 14px;
    border: 0;
    outline: none;
    resize: none;
    background: var(--code-bg);
    color: var(--code-text);
    font: 14px/22px "JetBrains Mono", Consolas, monospace;
    tab-size: 4;
    white-space: pre;
}
/* ═══════════════════════════════ Track tambahan (materi CP) ═══════════════════════════════ */
.track-fondasi { --tc: #1d8a4a; --tc-2: #22b8cf; }
.track-array, .pill-array { --tc: #2f5bd3; --tc-2: #6d8df0; }
.track-sorting, .pill-sorting { --tc: #6d3fd1; --tc-2: #a07cf0; }
.track-rekursi, .pill-rekursi { --tc: #b8326f; --tc-2: #e46aa3; }
.track-greedy, .pill-greedy { --tc: #0f7a6c; --tc-2: #2fb3a1; }
.track-matematika, .pill-matematika { --tc: #4338ca; --tc-2: #7c83f0; }
.track-graph { --tc: #0b7f9a; --tc-2: #2bb4d4; }
.track-dp { --tc: #c45a10; --tc-2: #ef8a3c; }
.track-struktur-data, .pill-struktur-data { --tc: #b42323; --tc-2: #e46161; }
.track-pohon, .pill-pohon { --tc: #2f7d32; --tc-2: #63b866; }
.track-string, .pill-string { --tc: #9d2aa8; --tc-2: #d16bdb; }
.track-geometri, .pill-geometri { --tc: #0369a1; --tc-2: #38a3d9; }
.track-permainan, .pill-permainan { --tc: #9a4a12; --tc-2: #d9823f; }
.track-kontes, .pill-kontes { --tc: #475569; --tc-2: #8392a8; }
.track-latihan, .pill-latihan { --tc: #8a6a00; --tc-2: #d1a521; }

:is(.track-array, .track-sorting, .track-rekursi, .track-greedy, .track-matematika, .track-struktur-data, .track-pohon,
    .track-string, .track-geometri, .track-permainan, .track-kontes, .track-latihan) .track-icon {
    background: linear-gradient(135deg, var(--tc), var(--tc-2));
}
html[data-theme="light"] :is(.track-array, .track-sorting, .track-rekursi, .track-greedy, .track-matematika, .track-struktur-data,
    .track-pohon, .track-string, .track-geometri, .track-permainan, .track-kontes, .track-latihan) .track-icon {
    background: var(--tc);
}
:is(.track-array, .track-sorting, .track-rekursi, .track-greedy, .track-matematika, .track-struktur-data, .track-pohon,
    .track-string, .track-geometri, .track-permainan, .track-kontes, .track-latihan) .bar i {
    background: linear-gradient(90deg, var(--tc), var(--tc-2));
}
:is(.pill-array, .pill-sorting, .pill-rekursi, .pill-greedy, .pill-matematika, .pill-struktur-data, .pill-pohon,
    .pill-string, .pill-geometri, .pill-permainan, .pill-kontes, .pill-latihan) {
    color: var(--tc);
    background: color-mix(in srgb, var(--tc) 11%, transparent);
}
html[data-theme="dark"] :is(.pill-array, .pill-sorting, .pill-rekursi, .pill-greedy, .pill-matematika, .pill-struktur-data,
    .pill-pohon, .pill-string, .pill-geometri, .pill-permainan, .pill-kontes, .pill-latihan) {
    color: var(--tc-2);
    background: color-mix(in srgb, var(--tc-2) 14%, transparent);
}

/* Lompat ke track di beranda */
.track-jump {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 30px;
}
.track-jump-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 11px 6px 6px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--panel);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: border-color 0.15s, transform 0.15s;
}
.track-jump-item:hover {
    border-color: var(--tc);
    transform: translateY(-1px);
}
.track-jump-item .tj-icon {
    display: grid;
    place-items: center;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    color: #fff;
    background: var(--tc);
}
.track-jump-item small {
    color: var(--faint);
    font-family: var(--mono);
    font-size: 11px;
}
.track {
    scroll-margin-top: 80px;
}

/* ═══════════════════════════════ Viz Kit (komponen visual bersama) ═══════════════════════════════ */
.kx-stage {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
    min-height: 300px;
    padding: 18px 10px;
}
.kx-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}
.kx-row.has-ptr {
    padding-bottom: 26px;
}
.kx-cell {
    position: relative;
    display: grid;
    place-items: center;
    min-width: 46px;
    height: 54px;
    padding: 0 6px;
    border: 2px solid var(--border);
    border-radius: 10px;
    background: var(--panel);
    font-family: var(--mono);
    transition: background 0.25s, border-color 0.25s, transform 0.25s;
}
.kx-sm .kx-cell { min-width: 36px; height: 42px; border-radius: 8px; }
.kx-sm .kx-cell b { font-size: 14px; }
.kx-lg .kx-cell { min-width: 58px; height: 64px; }
.kx-cell small {
    position: absolute;
    top: 2px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: 9.5px;
    color: var(--faint);
}
.kx-cell b {
    margin-top: 6px;
    font-size: 17px;
    color: var(--text-strong);
}
.kx-cell em {
    position: absolute;
    bottom: 2px;
    font-style: normal;
    font-size: 10px;
    color: var(--muted);
}
.kx-cell .kx-ptr {
    position: absolute;
    top: calc(100% + 4px);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2px;
    font: 700 11px var(--mono);
    font-style: normal;
    white-space: nowrap;
}
.kx-cell .kx-ptr span {
    padding: 1px 5px;
    border-radius: 6px;
    background: var(--primary);
    color: #fff;
}
.kx-cell .kx-ptr span:nth-child(2) { background: var(--pink); }
.kx-cell .kx-ptr span:nth-child(3) { background: var(--green); }
.kx-cell.on, .kx-box.on { border-color: var(--amber); background: var(--amber-soft); transform: translateY(-3px); }
.kx-cell.in, .kx-box.in { border-color: var(--cyan); background: var(--cyan-soft); }
.kx-cell.ok, .kx-box.ok { border-color: var(--green); background: var(--green-soft); }
.kx-cell.bad, .kx-box.bad { border-color: var(--red); background: var(--red-soft); }
.kx-cell.vi, .kx-box.vi { border-color: #7c5cdb; background: rgba(124, 92, 219, 0.12); }
.kx-cell.dim, .kx-box.dim { opacity: 0.38; }
.kx-cell.ask, .kx-box.ask { border-color: var(--amber); border-style: dashed; background: var(--hl-fill); }
.kx-cell.ask b { color: var(--amber); }
.kx-cell.gap { visibility: hidden; }

.kx-line {
    display: grid;
    grid-template-columns: minmax(70px, max-content) 1fr;
    align-items: center;
    gap: 12px;
}
.kx-lab {
    font: 600 12px var(--mono);
    color: var(--muted);
    text-align: right;
}
.kx-line .kx-row { justify-content: flex-start; }
.kx-line-body { min-width: 0; }

.kx-bars {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 6px;
    height: var(--h);
    padding: 0 6px;
}
.kx-bar {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    width: 38px;
    height: 100%;
}
.kx-bar i {
    display: block;
    width: 100%;
    border-radius: 6px 6px 3px 3px;
    background: color-mix(in srgb, var(--primary) 28%, var(--panel));
    border: 2px solid color-mix(in srgb, var(--primary) 55%, transparent);
    transition: height 0.35s ease, background 0.25s;
}
.kx-bar b { font: 700 12px var(--mono); color: var(--text-strong); margin-bottom: 3px; }
.kx-bar small { font: 10px var(--mono); color: var(--faint); margin-top: 3px; }
.kx-bar em { position: absolute; bottom: -18px; font: 700 11px var(--mono); font-style: normal; color: var(--primary); }
.kx-bar.on i { background: var(--amber); border-color: var(--amber); }
.kx-bar.ok i { background: color-mix(in srgb, var(--green) 45%, var(--panel)); border-color: var(--green); }
.kx-bar.bad i { background: color-mix(in srgb, var(--red) 40%, var(--panel)); border-color: var(--red); }
.kx-bar.in i { background: color-mix(in srgb, var(--cyan) 35%, var(--panel)); border-color: var(--cyan); }
.kx-bar.vi i { background: color-mix(in srgb, #7c5cdb 40%, var(--panel)); border-color: #7c5cdb; }
.kx-bar.dim { opacity: 0.35; }

.kx-stackwrap {
    display: flex;
    align-items: center;
    gap: 8px;
}
.kx-stackwrap.kx-v { flex-direction: column; }
.kx-stack-title { font: 600 12px var(--mono); color: var(--muted); }
.kx-stack {
    display: flex;
    gap: 5px;
    padding: 8px;
    border: 2px solid var(--line-strong);
    border-radius: 10px;
    background: var(--panel-2);
    min-width: 70px;
    min-height: 56px;
}
.kx-v .kx-stack {
    flex-direction: column;
    border-top-color: transparent;
    border-radius: 0 0 12px 12px;
    min-height: 120px;
    justify-content: flex-end;
}
.kx-h .kx-stack {
    border-left-style: dashed;
    border-right-style: dashed;
    align-items: center;
}
.kx-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 46px;
    padding: 6px 9px;
    border: 2px solid var(--border);
    border-radius: 8px;
    background: var(--panel);
    font-family: var(--mono);
    transition: background 0.25s, border-color 0.25s;
}
.kx-box b { font-size: 15px; color: var(--text-strong); }
.kx-box small { font-size: 10px; color: var(--muted); }
.kx-end { font: 600 11px var(--mono); color: var(--faint); }
.kx-empty {
    align-self: center;
    margin: auto;
    padding: 6px 10px;
    font: italic 12px var(--sans);
    color: var(--faint);
}

.kx-tablewrap { overflow: auto; }
.kx-table {
    margin: 0 auto;
    border-collapse: separate;
    border-spacing: 3px;
    font: 13px var(--mono);
}
.kx-table th {
    padding: 3px 8px;
    color: var(--muted);
    font-weight: 600;
    font-size: 11.5px;
}
.kx-table td {
    min-width: 34px;
    padding: 6px 8px;
    border: 1.5px solid var(--border-soft);
    border-radius: 7px;
    background: var(--panel);
    text-align: center;
    color: var(--text-strong);
    transition: background 0.25s, border-color 0.25s;
}
.kx-table td.on { border-color: var(--amber); background: var(--amber-soft); }
.kx-table td.in { border-color: var(--cyan); background: var(--cyan-soft); }
.kx-table td.ok { border-color: var(--green); background: var(--green-soft); }
.kx-table td.bad { border-color: var(--red); background: var(--red-soft); }
.kx-table td.vi { border-color: #7c5cdb; background: rgba(124, 92, 219, 0.12); }
.kx-table td.dim { opacity: 0.4; }
.kx-table td.head { background: transparent; border-color: transparent; color: var(--muted); font-weight: 600; }
.kx-table td.ask { border-style: dashed; border-color: var(--amber); background: var(--hl-fill); color: var(--amber); }
.kx-table tr.on td:not(.head) { border-color: color-mix(in srgb, var(--amber) 55%, transparent); }

.kx-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--panel);
    font: 600 12px var(--mono);
    color: var(--text-strong);
}
.kx-chip.on { border-color: var(--amber); background: var(--amber-soft); }
.kx-chip.ok { border-color: var(--green); background: var(--green-soft); color: var(--green-text); }
.kx-chip.bad { border-color: var(--red); background: var(--red-soft); color: var(--red-text); }
.kx-chip.in { border-color: var(--cyan); background: var(--cyan-soft); }
.kx-chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.kx-note {
    text-align: center;
    font-size: 13px;
    color: var(--muted);
}
.kx-note b { color: var(--text-strong); }
.kx-big {
    text-align: center;
    font: 700 22px var(--mono);
    color: var(--text-strong);
}

/* Pohon SVG */
.kx-tree, .kx-plot {
    display: block;
    width: 100%;
    height: auto;
    max-height: 420px;
}
.kx-graph { display: block; width: 100%; height: auto; max-height: 440px; }
.kx-gedge { fill: none; stroke: var(--edge); stroke-width: 2; transition: stroke 0.2s; }
.kx-garrow { fill: var(--edge); }
.kx-gedge.on { stroke: var(--amber); stroke-width: 3; } .kx-garrow.on { fill: var(--amber); }
.kx-gedge.ok { stroke: var(--green); stroke-width: 3; } .kx-garrow.ok { fill: var(--green); }
.kx-gedge.in { stroke: var(--cyan); stroke-width: 3; } .kx-garrow.in { fill: var(--cyan); }
.kx-gedge.vi { stroke: #7c5cdb; stroke-width: 3; } .kx-garrow.vi { fill: #7c5cdb; }
.kx-gedge.bad { stroke: var(--red); stroke-width: 2.5; } .kx-garrow.bad { fill: var(--red); }
.kx-gedge.dash { stroke-dasharray: 5 4; }
.kx-gedge.dim, .kx-garrow.dim { opacity: 0.25; }
.kx-gedge-label { font: 600 11px var(--mono); fill: var(--muted); text-anchor: middle; paint-order: stroke; stroke: var(--panel); stroke-width: 3px; }
.kx-gedge-label.on { fill: var(--amber-text); }
.kx-gedge-label.ok { fill: var(--green-text); }
.kx-gedge-label.bad { fill: var(--red-text); }
.kx-tnode.col circle, .kx-tnode.col rect { fill: color-mix(in srgb, var(--c) 24%, var(--panel)); stroke: var(--c); }
.kx-tedge { stroke: var(--edge); stroke-width: 2; }
.kx-tedge.on { stroke: var(--amber); stroke-width: 3; }
.kx-tedge.ok { stroke: var(--green); stroke-width: 3; }
.kx-tedge.in { stroke: var(--cyan); stroke-width: 3; }
.kx-tedge.vi { stroke: #7c5cdb; stroke-width: 3; }
.kx-tedge.bad { stroke: var(--red); stroke-dasharray: 5 4; }
.kx-tedge.dim { opacity: 0.3; }
.kx-tedge-label { font: 600 11px var(--mono); fill: var(--muted); text-anchor: middle; }
.kx-tnode circle, .kx-tnode rect { fill: var(--node-a); stroke: var(--line-strong); stroke-width: 2; transition: fill 0.25s, stroke 0.25s; }
.kx-tnode text { font: 700 12.5px var(--mono); fill: var(--node-text); text-anchor: middle; dominant-baseline: central; }
.kx-tnode .kx-tsub { font: 600 10.5px var(--mono); fill: var(--muted); }
.kx-tnode .kx-ttag { font: 700 10.5px var(--mono); fill: var(--hl-text); }
.kx-tnode.on circle, .kx-tnode.on rect { fill: var(--hl-fill); stroke: var(--amber); stroke-width: 3; }
.kx-tnode.in circle, .kx-tnode.in rect { fill: color-mix(in srgb, var(--cyan) 16%, var(--panel)); stroke: var(--cyan); }
.kx-tnode.ok circle, .kx-tnode.ok rect { fill: color-mix(in srgb, var(--green) 18%, var(--panel)); stroke: var(--green); }
.kx-tnode.bad circle, .kx-tnode.bad rect { fill: color-mix(in srgb, var(--red) 14%, var(--panel)); stroke: var(--red); }
.kx-tnode.vi circle, .kx-tnode.vi rect { fill: color-mix(in srgb, #7c5cdb 18%, var(--panel)); stroke: #7c5cdb; }
.kx-tnode.dim { opacity: 0.35; }
.kx-tnode.ask circle, .kx-tnode.ask rect { stroke: var(--amber); stroke-dasharray: 4 3; fill: var(--hl-fill); }

/* Bidang koordinat */
.kx-plot { color: var(--muted); }
.kx-grid { stroke: var(--border-soft); stroke-width: 1; }
.kx-grid.axis { stroke: var(--line-strong); stroke-width: 1.5; }
.kx-axis-t { font: 10px var(--mono); fill: var(--faint); text-anchor: middle; }
.kx-seg { stroke: var(--edge); stroke-width: 2.2; }
.kx-seg.on { stroke: var(--amber); stroke-width: 3; }
.kx-seg.ok { stroke: var(--green); stroke-width: 3; }
.kx-seg.bad { stroke: var(--red); stroke-width: 2.5; stroke-dasharray: 6 4; }
.kx-seg.in { stroke: var(--cyan); stroke-width: 2.5; }
.kx-seg.vi { stroke: #7c5cdb; stroke-width: 2.5; }
.kx-seg.dim { opacity: 0.3; }
.kx-vline { stroke: var(--primary); stroke-width: 2; stroke-dasharray: 5 4; }
.kx-vline.on { stroke: var(--amber); }
.kx-curve { fill: none; stroke: var(--primary); stroke-width: 2.5; }
.kx-curve.vi { stroke: #7c5cdb; }
.kx-poly { fill: color-mix(in srgb, var(--green) 13%, transparent); stroke: var(--green); stroke-width: 2; }
.kx-poly.on { fill: color-mix(in srgb, var(--amber) 14%, transparent); stroke: var(--amber); }
.kx-poly.in { fill: color-mix(in srgb, var(--cyan) 12%, transparent); stroke: var(--cyan); }
.kx-poly.bad { fill: color-mix(in srgb, var(--red) 12%, transparent); stroke: var(--red); stroke-dasharray: 5 4; }
.kx-plabel { font: 600 11px var(--mono); fill: var(--muted); }
.kx-plabel.on { fill: var(--amber); }
.kx-plabel.ok { fill: var(--green-text); }
.kx-pt circle { fill: var(--node-a); stroke: var(--text-strong); stroke-width: 2; }
.kx-pt text { font: 600 11px var(--mono); fill: var(--text-strong); }
.kx-pt.on circle { fill: var(--amber); stroke: var(--amber); }
.kx-pt.ok circle { fill: var(--green); stroke: var(--green); }
.kx-pt.bad circle { fill: var(--red); stroke: var(--red); }
.kx-pt.in circle { fill: var(--cyan); stroke: var(--cyan); }
.kx-pt.vi circle { fill: #7c5cdb; stroke: #7c5cdb; }
.kx-pt.dim { opacity: 0.35; }

/* Bit-bit (bitmask / bitset) */
.kx-bits { display: inline-flex; gap: 3px; font-family: var(--mono); }
.kx-bits span {
    display: grid;
    place-items: center;
    width: 24px;
    height: 28px;
    border-radius: 6px;
    border: 1.5px solid var(--border);
    background: var(--panel);
    font-size: 13px;
    font-weight: 700;
    color: var(--faint);
}
.kx-bits span.one { color: var(--text-strong); background: color-mix(in srgb, var(--primary) 14%, var(--panel)); border-color: color-mix(in srgb, var(--primary) 50%, transparent); }
.kx-bits span.on { border-color: var(--amber); background: var(--amber-soft); color: var(--text-strong); }
.kx-bits span.ok { border-color: var(--green); background: var(--green-soft); color: var(--green-text); }
.kx-bits span.bad { border-color: var(--red); background: var(--red-soft); color: var(--red-text); }

@media (max-width: 700px) {
    .kx-cell { min-width: 36px; height: 46px; }
    .kx-cell b { font-size: 14px; }
    .kx-bar { width: 26px; }
    .kx-line { grid-template-columns: 1fr; gap: 4px; }
    .kx-lab { text-align: left; }
}
.kx-cell.empty { border-style: dashed; background: transparent; }
.kx-cell.empty b { color: var(--faint); }
.kx-stage > .kx-line { align-self: center; }
.viz-side .kx-v .kx-stack { min-height: 0; }

/* Garis waktu interval (Kit greedy) */
.kx-tl { width: 100%; max-width: 660px; height: auto; display: block; margin: 0 auto; }
.kx-tl .kx-iv rect { fill: var(--panel-2); stroke: var(--line-strong); stroke-width: 1.5; }
.kx-tl .kx-iv text { font: 600 11px var(--mono); fill: var(--svg-text); text-anchor: middle; }
.kx-tl .kx-iv.on rect { fill: var(--amber-soft); stroke: var(--amber); stroke-width: 2; }
.kx-tl .kx-iv.ok rect { fill: var(--green-soft); stroke: var(--green); }
.kx-tl .kx-iv.in rect { fill: var(--cyan-soft); stroke: var(--cyan); }
.kx-tl .kx-iv.vi rect { fill: rgba(124, 92, 219, 0.12); stroke: #7c5cdb; }
.kx-tl .kx-iv.bad rect { fill: var(--red-soft); stroke: var(--red); stroke-dasharray: 4 3; }
.kx-tl .kx-iv.dim { opacity: 0.4; }
.kx-tl .kx-axis line { stroke: var(--edge); stroke-width: 1.2; }
.kx-tl .kx-axis text { font: 500 10px var(--mono); fill: var(--muted); text-anchor: middle; }
.kx-tl .kx-tmark line { stroke: var(--primary); stroke-width: 2; stroke-dasharray: 5 4; }
.kx-tl .kx-tmark text { font: 700 11px var(--mono); fill: var(--primary); }

/* Kit: kolom grid & matriks */
.kx-col { display: flex; flex-direction: column; gap: 6px; align-items: center; }
.kx-mats { display: flex; gap: 22px; align-items: flex-start; flex-wrap: wrap; justify-content: center; }
.kx-mat small { display: block; text-align: center; font: 700 11px var(--mono); color: var(--muted); margin-bottom: 4px; }
.kx-mat .kx-table td { min-width: 64px; text-align: center; font-family: var(--mono); }
.kx-mat.on .kx-tablewrap { outline: 2px solid var(--amber); border-radius: 8px; }
.kx-mat.ok .kx-tablewrap { outline: 2px solid var(--green); border-radius: 8px; }
.kx-mat.in .kx-tablewrap { outline: 2px solid var(--cyan); border-radius: 8px; }

/* ═══════════════════════════════ Cangkang produk ═══════════════════════════════ */
html[data-theme="light"] .topbar,
html[data-theme="dark"] .topbar {
    height: 60px;
    background: linear-gradient(90deg, #3730a3 0%, #4f46e5 52%, #1d4ed8 100%);
    border-bottom: 0;
    backdrop-filter: none;
    box-shadow: none;
    color: #fff;
}

.topbar .logo,
.topbar .logo-text,
.topbar .main-nav a,
.topbar .theme-toggle,
.topbar .user-menu summary {
    color: rgba(255, 255, 255, 0.9);
}

.topbar .main-nav a:hover,
.topbar .main-nav a.active,
.topbar .user-menu summary:hover,
.topbar .user-menu[open] summary {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

.topbar .theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.22);
}

.topbar .theme-toggle:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.45);
}

.topbar .divider {
    background: rgba(255, 255, 255, 0.28);
}

.topbar .avatar {
    background: #fff;
    color: #3730a3;
}

.user-dropdown,
.user-dropdown a,
.user-dropdown button,
.user-dropdown-head small {
    color: var(--text);
}

.user-dropdown-head strong {
    color: var(--text-strong);
}

.user-dropdown .logout {
    color: var(--red);
}

.topbar .btn:not(.btn-success),
.topbar .pill {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    border-color: transparent;
}

.topbar .btn:not(.btn-success):hover,
.topbar .btn-icon:hover,
.topbar .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.24);
    color: #fff;
}

.topbar .btn-success {
    background: #059669;
    color: #fff;
}

.topbar .btn-success:hover {
    background: #047857;
}

.page-head h1,
.lesson-hero h1,
.track-title h2,
.auth-card h2 {
    font-weight: 800;
    letter-spacing: -0.03em;
}

.page-head h1 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-head h1::before {
    content: "";
    width: 6px;
    height: 26px;
    border-radius: 99px;
    background: #3730a3;
    flex: none;
}

.card,
.lesson-card,
.list-card {
    border-radius: 16px;
    box-shadow: 0 1px 2px rgba(30, 27, 75, 0.04);
}

html[data-theme="light"] .card,
html[data-theme="light"] .lesson-card {
    border-color: #e8eaf3;
}

.lesson-card:hover {
    transform: none;
    border-color: #c7d2fe;
    background: var(--panel);
}

html[data-theme="light"] .lesson-card.next {
    background: #fafafe;
    border-color: #c7d2fe;
}

.track .track-icon,
.track .bar i,
.track-fondasi .track-icon,
.track-fondasi .bar i,
.track-graph .track-icon,
.track-graph .bar i,
.track-dp .track-icon,
.track-dp .bar i {
    background: #3730a3 !important;
    box-shadow: none !important;
}

.chip.active {
    background: #3730a3;
    color: #fff;
}

html[data-theme="light"] .table tbody tr.clickable:hover {
    background: #eef2ff;
}

.grad-text,
.grad-graph-text,
.grad-dp-text {
    background: none;
    color: #3730a3;
    -webkit-text-fill-color: #3730a3;
}

.home-banner {
    margin-bottom: 28px;
    padding: 28px 28px 0;
    border-radius: 24px;
    color: #fff;
    background: linear-gradient(115deg, #3730a3 0%, #4f46e5 46%, #1d4ed8 100%);
    box-shadow: none;
}

.home-banner-top {
    display: grid;
    grid-template-columns: 1.15fr 0.9fr;
    gap: 28px;
    align-items: center;
}

.home-copy .kicker {
    margin: 0 0 4px;
    color: rgba(255, 255, 255, 0.62);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.home-copy h1 {
    margin: 0 0 10px;
    color: #fff;
    font-size: clamp(32px, 4vw, 46px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.035em;
}

.home-copy > p {
    margin: 0 0 18px;
    max-width: 54ch;
    color: rgba(255, 255, 255, 0.84);
    font-size: 15px;
}

.home-copy > p.home-credit {
    margin: 16px 0 0;
    max-width: none;
    color: rgba(255, 255, 255, 0.68);
    font-size: 12.5px;
}

.home-banner .btn-primary {
    background: #fff;
    color: #312e81;
}

.home-banner .btn-primary:hover {
    background: #eef2ff;
    color: #312e81;
}

.home-banner .btn-outline {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.45);
    color: #fff;
}

.home-banner .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    color: #fff;
}

.home-banner .hero-visual {
    background: #fff;
    border: 0;
    border-radius: 18px;
    box-shadow: none;
}

.home-banner .hv-edge {
    stroke: #ddd6fe;
}

.home-banner .hv-edge.lit {
    stroke: #3730a3;
}

.home-banner .hv-node circle {
    fill: #eef2ff;
    stroke: #c7d2fe;
}

.home-banner .hv-node text {
    fill: #312e81;
}

.home-banner .hv-grid {
    background: #fff;
    border-color: #e0e7ff;
    box-shadow: none;
}

.home-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 22px;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.home-stats div {
    padding: 16px 8px 18px;
    text-align: center;
}

.home-stats div + div {
    border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.home-stats b {
    display: block;
    color: #fff;
    font-size: 26px;
    font-weight: 800;
    line-height: 1.15;
}

.home-stats .faint {
    color: rgba(255, 255, 255, 0.55);
    font-weight: 700;
}

.home-stats small {
    color: rgba(255, 255, 255, 0.66);
    font-size: 12px;
    font-weight: 600;
}

.track-jump-item {
    border-radius: 12px;
    background: var(--panel);
    box-shadow: 0 1px 2px rgba(30, 27, 75, 0.04);
}

.track-jump-item:hover {
    transform: none;
}

.site-footer {
    margin-top: 8px;
    border-top: 1px solid var(--border-soft);
    background: var(--panel);
}

.site-footer-inner {
    max-width: 1160px;
    margin: 0 auto;
    padding: 26px 20px 32px;
    display: flex;
    justify-content: space-between;
    gap: 28px;
    flex-wrap: wrap;
}

.site-footer strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text-strong);
    font-size: 15px;
}

.site-footer p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.site-footer-by {
    margin-bottom: 4px !important;
    color: #3730a3 !important;
    font-size: 11px !important;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.page-workspace .site-footer,
.page-auth .site-footer {
    display: none;
}

.page-auth .auth-wrap {
    min-height: 100vh;
}

.mobile-nav {
    display: none;
}

.auth-wrap {
    align-items: stretch;
    gap: 0;
    max-width: none;
    min-height: calc(100vh - 120px);
    padding: 0;
}

.auth-side {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 56px 64px;
    background: linear-gradient(165deg, #3730a3 0%, #4f46e5 48%, #1d4ed8 100%);
    color: #fff;
}

.auth-side .logo,
.auth-side .logo-text {
    color: #fff;
}

.auth-side h1 {
    color: #fff;
    font-weight: 800;
}

.auth-side > p {
    color: rgba(255, 255, 255, 0.84);
}

.auth-side > p.auth-credit {
    margin: auto 0 0;
    padding-top: 36px;
    max-width: none;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    line-height: 1.55;
}

.auth-credit strong {
    display: block;
    color: #fff;
    font-size: 15px;
}

.auth-card {
    align-self: center;
    justify-self: center;
    margin: 28px;
    border: 1px solid #e0e7ff;
    border-radius: 24px;
    background: #fff;
    backdrop-filter: none;
    box-shadow: 0 18px 40px rgba(49, 46, 129, 0.08);
}

.auth-card,
.auth-card h2,
.auth-card .field > span:first-child {
    color: #1e1b4b;
}

.auth-card .muted,
.auth-card .auth-switch {
    color: #6b7280;
}

.auth-card .field input {
    background: #f8fafc;
    border-color: #e5e7eb;
    color: #1e1b4b;
}

.auth-card .link {
    color: #3730a3;
}

@media (max-width: 960px) {
    .home-banner-top,
    .auth-wrap {
        grid-template-columns: 1fr;
    }

    .auth-side {
        padding: 32px 24px 8px;
    }

    .auth-credit {
        margin-top: 20px;
        padding-top: 0;
    }

    .auth-card {
        margin: 8px 16px 28px;
        max-width: none;
    }
}

@media (max-width: 680px) {
    .home-banner {
        padding: 22px 16px 0;
        border-radius: 18px;
    }

    .home-stats {
        grid-template-columns: 1fr;
    }

    .home-stats div + div {
        border-left: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.16);
    }

    .mobile-nav {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 45;
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        height: 62px;
        padding-bottom: env(safe-area-inset-bottom);
        background: #fff;
        border-top: 1px solid #e5e7eb;
        box-shadow: 0 -8px 24px rgba(30, 27, 75, 0.06);
    }

    html[data-theme="dark"] .mobile-nav {
        background: #171c2e;
        border-top-color: #2d3650;
    }

    .mobile-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3px;
        color: #6b7280;
        font-size: 10px;
        font-weight: 800;
    }

    html[data-theme="dark"] .mobile-nav a {
        color: #93a0bd;
    }

    .mobile-nav a.active {
        color: #3730a3;
    }

    html[data-theme="dark"] .mobile-nav a.active {
        color: #a5b4fc;
    }

    .container,
    .lesson-layout {
        padding-bottom: 96px;
    }

    .site-footer {
        margin-bottom: 62px;
    }

    .profile-banner,
    .profile-stats {
        display: block;
    }

    .profile-stats div + div {
        border-left: 0;
        border-top: 1px solid var(--border-soft);
    }

    .profile-rank {
        text-align: left;
        margin-top: 18px;
    }
}

.avatar {
    overflow: hidden;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.home-tags,
.profile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.home-tags {
    margin: 0 0 14px;
}

.home-tags span,
.profile-tags span {
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    font-size: 12px;
    font-weight: 700;
}

.profile-banner {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: center;
    margin-bottom: 16px;
    padding: 28px;
    border-radius: 24px;
    color: #fff;
    background: linear-gradient(115deg, #3730a3 0%, #4f46e5 46%, #1d4ed8 100%);
}

.profile-person {
    display: flex;
    gap: 16px;
    align-items: center;
    min-width: 0;
}

.profile-photo {
    width: 84px;
    height: 84px;
    font-size: 28px;
    background: #fff;
    color: #3730a3;
}

.profile-banner .kicker {
    margin: 0 0 4px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.profile-banner h1 {
    margin: 0;
    color: #fff;
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.profile-nick {
    margin: 4px 0 0;
    color: rgba(255, 255, 255, 0.8);
}

.profile-tags {
    margin-top: 10px;
}

.profile-rank {
    flex: none;
    text-align: right;
}

.profile-rank small {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.profile-rank b {
    display: block;
    font-size: 42px;
    line-height: 1;
}

.profile-rank span {
    color: rgba(255, 255, 255, 0.75);
    font-size: 13px;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-bottom: 22px;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    border-radius: 16px;
    background: var(--panel);
}

.profile-stats div {
    padding: 16px 10px;
    text-align: center;
}

.profile-stats div + div {
    border-left: 1px solid var(--border-soft);
}

.profile-stats b {
    display: block;
    color: var(--text-strong);
    font-size: 24px;
    line-height: 1.15;
}

.profile-stats b span {
    color: var(--faint);
    font-size: 15px;
}

.profile-stats small {
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.profile-form {
    max-width: 560px;
    padding: 24px;
}

.profile-form h2 {
    margin: 0 0 16px;
    color: var(--text-strong);
    font-size: 20px;
}

.profile-locked {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 12px 14px;
    border-radius: 12px;
    background: #eef2ff;
    color: #3730a3;
    font-size: 13px;
}

.field input[type="file"] {
    height: auto;
    padding: 8px 0;
    border: 0;
    background: transparent;
}

.logout-link {
    border: 0;
    background: none;
    padding: 0;
    color: #3730a3;
    font-weight: 700;
    cursor: pointer;
}

.lb-npm {
    display: block;
    color: var(--faint);
    font-size: 11px;
    font-weight: 600;
}

.unpad-hero {
    width: 96px;
    height: 96px;
    margin-bottom: 28px;
    padding: 8px;
    object-fit: contain;
    background: #fff;
    border-radius: 24px;
}

.auth-side > p.auth-credit strong {
    display: block;
    margin: 6px 0 8px;
    font-size: 28px;
    line-height: 1.15;
}

.auth-side > p.auth-credit span {
    display: block;
    margin-bottom: 2px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.home-copy > p.home-credit {
    display: grid;
    gap: 2px;
    margin-top: 26px;
    font-size: 13px;
}

.home-copy > p.home-credit strong {
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    line-height: 1.2;
}

.creator-name {
    font-size: 18px;
}

.track-jump-item .tj-icon {
    background: #3730a3 !important;
}

.track-jump-item:hover {
    background: var(--panel);
    border-color: #3730a3;
}

body:not(.page-workspace) .lesson-hero [class*="pill-"],
body:not(.page-workspace) .track-jump [class*="pill-"] {
    color: #3730a3 !important;
    background: #eef2ff !important;
}

html[data-theme="light"] .page-workspace .topbar,
html[data-theme="dark"] .page-workspace .topbar {
    height: 52px;
    background: var(--panel);
    color: var(--text);
    border-bottom: 1px solid var(--border);
    box-shadow: none;
}

.page-workspace .topbar .logo,
.page-workspace .topbar .logo-text,
.page-workspace .topbar .btn-ghost,
.page-workspace .topbar .btn-icon,
.page-workspace .topbar .user-menu summary,
.page-workspace .topbar .pill {
    color: var(--text);
}

.page-workspace .topbar .btn:not(.btn-success),
.page-workspace .topbar .pill {
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
}

.page-workspace .topbar .btn:not(.btn-success):hover,
.page-workspace .topbar .btn-icon:hover,
.page-workspace .topbar .btn-ghost:hover {
    background: var(--panel-3);
    color: var(--text-strong);
}

.page-workspace .topbar .avatar {
    background: #3730a3;
    color: #fff;
}

.page-workspace .topbar .divider {
    background: var(--border);
}

.profile-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
    gap: 18px;
    align-items: start;
}

.profile-grid .profile-form,
.profile-password {
    max-width: none;
    padding: 24px;
}

.profile-password h2,
.profile-grid .profile-form h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 16px;
    color: var(--text-strong);
    font-size: 20px;
}

.profile-password h2::before,
.profile-grid .profile-form h2::before {
    content: "";
    width: 6px;
    height: 22px;
    border-radius: 99px;
    background: #3730a3;
    flex: none;
}

@media (max-width: 800px) {
    .profile-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 680px) {
    .profile-banner {
        display: block;
        padding: 22px 16px;
    }

    .profile-stats {
        grid-template-columns: 1fr 1fr;
    }

    .profile-stats div:nth-child(odd) {
        border-left: 0;
    }

    .profile-stats div:nth-child(n + 3) {
        border-top: 1px solid var(--border-soft);
    }

    .profile-rank {
        margin-top: 16px;
        text-align: left;
    }
}

.card,
.lesson-card,
.list-card,
.auth-card,
.user-dropdown,
.home-banner,
.profile-banner,
.home-banner .hero-visual,
.track-jump-item,
.profile-stats {
    box-shadow: none;
}

.track .bar i {
    background: #14b8a6 !important;
}

.btn-primary {
    background: linear-gradient(90deg, #3730a3 0%, #4f46e5 100%);
}

.steps,
.lesson-main .callout,
.lesson-main .code-tabs,
.lesson-main .viz,
.lesson-main .pattern-grid,
.lesson-main .recurrence {
    max-width: none;
    width: 100%;
}

.pattern-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
}

.pattern-grid:has(> .pattern:nth-child(4):last-child),
.pattern-grid:has(> .pattern:nth-child(2):last-child) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.pattern-grid:has(> .pattern:nth-child(1):last-child) {
    grid-template-columns: minmax(0, 1fr);
}

.pattern {
    min-height: 0;
    height: 100%;
}

.term-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.term-grid:has(> .term:nth-child(3):last-child),
.term-grid:has(> .term:nth-child(6):last-child) {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.term-grid:has(> .term:nth-child(2):last-child) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.term {
    height: 100%;
}

.alur-contoh {
    margin: 0 0 22px;
}

.alur-contoh h3 {
    margin: 0 0 6px;
    color: var(--text-strong);
}

.alur-card {
    margin-top: 12px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--panel);
}

.alur-card > b {
    display: block;
    margin-bottom: 8px;
    color: var(--text-strong);
}

.alur-io {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.alur-io small {
    display: block;
    margin-bottom: 4px;
    color: var(--faint);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.alur-io pre {
    margin: 0;
    padding: 10px 12px;
    min-height: 72px;
    border-radius: 10px;
    border: 1px solid var(--border-soft);
    background: var(--code-bg);
    color: var(--code-text);
    white-space: pre-wrap;
}

@media (max-width: 800px) {
    .pattern-grid,
    .pattern-grid:has(> .pattern:nth-child(4):last-child),
    .pattern-grid:has(> .pattern:nth-child(2):last-child),
    .pattern-grid:has(> .pattern:nth-child(1):last-child),
    .term-grid,
    .term-grid:has(> .term:nth-child(6):last-child),
    .term-grid:has(> .term:nth-child(3):last-child),
    .term-grid:has(> .term:nth-child(2):last-child),
    .alur-io {
        grid-template-columns: 1fr;
    }
}