/* Shared palette and component contract for the landing, app, and exam runtimes. */
.intinya-confirm { position: fixed; inset: 0; margin: auto; max-height: calc(100dvh - 32px); overflow-y: auto; width: min(440px, calc(100% - 32px)); box-sizing: border-box; padding: 28px; border: 1px solid var(--outline-color); border-radius: var(--radius-card); background: var(--card-bg); color: var(--text-primary); box-shadow: 0 20px 70px #0003; }
.intinya-confirm::backdrop { background: #17151380; backdrop-filter: blur(4px); }
.intinya-confirm-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 14px; background: var(--category-coral-bg); color: var(--category-coral-text); font-size: 24px; }
.intinya-confirm h2 { margin: 18px 0 10px; font: 700 1.35rem/1.4 var(--font-display); }
.intinya-confirm p { margin: 0; color: var(--text-secondary); font: 400 .9rem/1.7 var(--font-body); }
.intinya-confirm-actions { display: flex; gap: 10px; margin-top: 24px; flex-wrap: wrap; }
.intinya-confirm-actions button { flex: 1 1 150px; min-height: 44px; padding: 10px 14px; border: 1px solid var(--outline-color); border-radius: 999px; background: var(--card-bg); color: var(--text-primary); font: 600 .82rem/1.4 var(--font-body); cursor: pointer; }
.intinya-confirm-actions [data-confirm-submit] { background: var(--category-coral-bg); color: var(--category-coral-text); }
.intinya-confirm-actions button:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }
@view-transition { navigation: auto; }
::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0s; }

:root {
    color-scheme: light;
    --canvas-bg: #f7f7f5;
    --card-bg: #ffffff;
    --bg-header: rgba(247, 247, 245, .96);
    --surface-muted: #eeece7;
    --surface-hover: #f4f2ed;
    --card-border: #e2dfd7;
    --outline-color: #4c463e;
    --text-primary: #201e1b;
    --text-secondary: #5e5a54;
    --text-muted: #6b665f;
    --primary: #fccc42;
    --primary-hover: #e8b930;
    --primary-text: #835c0d;
    --primary-light: #fbf3dc;
    --btn-text: #282315;
    --sidebar-bg: #171513;
    --sidebar-text: #e4e1dc;
    --sidebar-muted: #aaa49c;
    --sidebar-border: rgba(255, 255, 255, .10);
    --success: #21784b;
    --success-solid: #21784b;
    --success-light: #e9f4ed;
    --danger: #b83b39;
    --danger-solid: #b83b39;
    --danger-light: #fbeeed;
    --warning: #8a6016;
    --warning-light: #faf2de;
    --info: #276a92;
    --info-light: #ebf3f8;
    --card-shadow: 0 2px 8px rgba(29, 36, 26, .035);
    --card-shadow-hover: 0 6px 20px rgba(29, 36, 26, .065);
    --radius-card: 24px;
    --radius-card-sm: 12px;
    --radius-btn: 10px;
    --font-brand: 'Kodchasan', 'Plus Jakarta Sans', sans-serif;
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --sidebar-w: 256px;
    --topbar-h: 72px;
    --view-max-w: 1360px;
    --view-padding-x: clamp(1rem, 2.5vw, 2.25rem);
    --category-coral-bg: #f3a38b; --category-coral-text: #42271f;
    --category-purple-bg: #c6a7ef; --category-purple-text: #30223e;
    --category-yellow-bg: #f5c842; --category-yellow-text: #2d2514;
    --category-blue-bg: #b9e4f2; --category-blue-text: #203741;
    --category-mint-bg: #b8e6d2; --category-mint-text: #233b2f;
    --category-dark-bg: #24211d; --category-dark-text: #f7f3ec;
    --category-ochre-bg: #ffe699; --category-ochre-text: #3c321c;
    --category-lavender-bg: #d8b4fe; --category-lavender-text: #392449;
    --category-sky-bg: #bae6fd; --category-sky-text: #233e4d;
    /* Each TKA subject keeps its own color across the home and landing slideshow. */
    --tka-mint-bg: #b8e6d2; --tka-mint-text: #233b2f;
    --tka-ochre-bg: #ffe699; --tka-ochre-text: #3c321c;
    --tka-lavender-bg: #d8b4fe; --tka-lavender-text: #392449;
    --tka-blue-bg: #a8c8f5; --tka-blue-text: #172c4b;
    --tka-indigo-bg: #b5b8ee; --tka-indigo-text: #25264b;
    --tka-lime-bg: #d0e792; --tka-lime-text: #34421d;
    --tka-rose-bg: #f0b5cf; --tka-rose-text: #442133;
    --tka-purple-bg: #c6a7ef; --tka-purple-text: #30223e;
    --tka-coral-bg: #f3a38b; --tka-coral-text: #362019;
    --tka-peach-bg: #ffd0a6; --tka-peach-text: #4d3321;
    --tka-yellow-bg: #f5c842; --tka-yellow-text: #2d2514;
    --tka-sand-bg: #dbcbb0; --tka-sand-text: #382d23;
    --tka-teal-bg: #9cdedb; --tka-teal-text: #173735;
    --action-coral: #ce492f; --action-coral-hover: #bc3c25; --action-coral-text: #ffffff;
}
[data-theme="dark"] {
    color-scheme: dark;
    --canvas-bg: #141416; --card-bg: #1e1e22; --bg-header: rgba(20, 20, 22, .96);
    --surface-muted: #29292e; --surface-hover: #2e2e34; --card-border: #3b3b42;
    --outline-color: #8d8880;
    --text-primary: #f1eeea; --text-secondary: #c7c2bc; --text-muted: #aaa49c;
    --primary: #f0c65e; --primary-hover: #e5b849; --primary-text: #f0c65e;
    --primary-light: #353023; --btn-text: #262214; --sidebar-bg: #111113;
    --success: #83d6a5; --success-light: #20392a;
    --danger: #f5a09c; --danger-light: #3d2727;
    --warning: #edcd80; --warning-light: #393220;
    --info: #9bcce9; --info-light: #233440;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, .12);
    --card-shadow-hover: 0 6px 20px rgba(0, 0, 0, .18);
    --category-coral-bg: #593b32; --category-coral-text: #f9d7c9;
    --category-purple-bg: #453856; --category-purple-text: #e6d2ff;
    --category-yellow-bg: #504528; --category-yellow-text: #fae2a1;
    --category-blue-bg: #2b4350; --category-blue-text: #cceafa;
    --category-mint-bg: #2e493b; --category-mint-text: #caefd9;
    --category-dark-bg: #25352d; --category-dark-text: #edf4e9;
    --category-ochre-bg: #493f2d; --category-ochre-text: #ecdbb5;
    --category-lavender-bg: #4b3654; --category-lavender-text: #ebcff5;
    --category-sky-bg: #304753; --category-sky-text: #d1ecfa;
    --tka-mint-bg: #2e493b; --tka-mint-text: #caefd9;
    --tka-ochre-bg: #514326; --tka-ochre-text: #ffe6a5;
    --tka-lavender-bg: #513e62; --tka-lavender-text: #ecdbff;
    --tka-blue-bg: #2a4263; --tka-blue-text: #d0e1fc;
    --tka-indigo-bg: #34345e; --tka-indigo-text: #dddfff;
    --tka-lime-bg: #414e29; --tka-lime-text: #e1f0b7;
    --tka-rose-bg: #5a3346; --tka-rose-text: #ffd8e8;
    --tka-purple-bg: #473362; --tka-purple-text: #ead4ff;
    --tka-coral-bg: #593b32; --tka-coral-text: #f9d7c9;
    --tka-peach-bg: #614431; --tka-peach-text: #ffdfbc;
    --tka-yellow-bg: #584b1d; --tka-yellow-text: #fff0a5;
    --tka-sand-bg: #4a4439; --tka-sand-text: #eee2cc;
    --tka-teal-bg: #264c4c; --tka-teal-text: #b9eee9;
    --action-coral: #f38a71; --action-coral-hover: #ee775a; --action-coral-text: #251713;
}
[data-theme="ui"] {
    --canvas-bg: #faf8ef; --card-bg: #fffef9; --bg-header: rgba(250, 248, 239, .96);
    --surface-muted: #f3f0e2; --surface-hover: #f8f5e9; --card-border: #e8e2ce;
    --outline-color: #655b37;
    --text-primary: #302c1c; --text-secondary: #655f47; --text-muted: #756d52;
    --primary: #eac32b; --primary-hover: #dcb31f; --primary-text: #796006;
    --primary-light: #f9f1cb; --btn-text: #2c2512; --sidebar-bg: #28271b;
    --category-coral-bg: #f0ad8e; --category-coral-text: #42281e;
    --category-purple-bg: #d0bce8; --category-purple-text: #352744;
    --category-yellow-bg: #ebcc48; --category-yellow-text: #342b12;
    --category-blue-bg: #c0dce8; --category-blue-text: #273c47;
    --category-mint-bg: #c0ddbb; --category-mint-text: #2d3e28;
    --category-dark-bg: #363627; --category-dark-text: #f5f3e7;
}
[data-theme="itb"] {
    --canvas-bg: #f2f6f9; --card-bg: #ffffff; --bg-header: rgba(242, 246, 249, .96);
    --surface-muted: #eaf0f5; --surface-hover: #f1f6f9; --card-border: #dce6ed;
    --outline-color: #466478;
    --text-primary: #203442; --text-secondary: #526979; --text-muted: #617888;
    --primary: #0876ab; --primary-hover: #07638f; --primary-text: #07638f;
    --primary-light: #e5f1f8; --btn-text: #ffffff; --sidebar-bg: #172e3e;
    --category-coral-bg: #f0b2a4; --category-coral-text: #442b25;
    --category-purple-bg: #bebde9; --category-purple-text: #2d2d4e;
    --category-yellow-bg: #edd484; --category-yellow-text: #3d351e;
    --category-blue-bg: #9bcfe7; --category-blue-text: #183b4c;
    --category-mint-bg: #acdacc; --category-mint-text: #224237;
    --category-dark-bg: #234457; --category-dark-text: #edf6fa;
}
[data-theme="ugm"] {
    --canvas-bg: #f7f3ef; --card-bg: #fffefd; --bg-header: rgba(247, 243, 239, .96);
    --surface-muted: #f0e9e2; --surface-hover: #f6f0eb; --card-border: #e6dcd3;
    --outline-color: #725641;
    --text-primary: #372b22; --text-secondary: #6d5c4e; --text-muted: #7a695b;
    --primary: #98613a; --primary-hover: #81502e; --primary-text: #81502e;
    --primary-light: #f5ebe1; --btn-text: #ffffff; --sidebar-bg: #31261e;
    --category-coral-bg: #dea082; --category-coral-text: #442a1f;
    --category-purple-bg: #c6b1ce; --category-purple-text: #3b2c42;
    --category-yellow-bg: #e2c07b; --category-yellow-text: #3d301c;
    --category-blue-bg: #b7ced5; --category-blue-text: #283e45;
    --category-mint-bg: #bbcdb0; --category-mint-text: #304229;
    --category-dark-bg: #49392c; --category-dark-text: #fbf2e7;
}

/* Legacy names resolve to the same palette; pages do not maintain separate themes. */
:root, [data-theme] {
    --bg-body: var(--canvas-bg); --bg-primary: var(--canvas-bg);
    --bg-card: var(--card-bg); --bg-card-solid: var(--card-bg); --bg-secondary: var(--surface-muted);
    --card-subtle: var(--surface-muted); --border-strong: var(--outline-color);
    --c-canvas: var(--canvas-bg); --c-card: var(--card-bg); --c-dark: #171513;
    --c-yellow: var(--primary); --c-coral: var(--primary-text);
    --c-purple: var(--category-purple-bg); --c-blue: var(--category-blue-bg); --c-mint: var(--category-mint-bg);
    --text-main: var(--text-primary); --text-header: var(--text-primary);
    --border: var(--card-border); --border-card: var(--card-border);
    --shadow-card: var(--card-shadow); --shadow-hover: var(--card-shadow-hover);
    --primary-gradient: linear-gradient(var(--primary), var(--primary));
    --badge-bg: var(--primary-light); --badge-text: var(--primary-text);
    --btn-primary-bg: var(--primary); --btn-primary-text: var(--btn-text); --btn-primary-hover: var(--primary-hover);
    --sidebar-active-bg: var(--primary); --sidebar-active-text: var(--btn-text);
    --glow-color: transparent; --focus-ring: var(--primary-text);
}

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body { text-rendering: optimizeLegibility; }
.app-main, body.landing-page {
    background-color: var(--canvas-bg);
    background-image: radial-gradient(circle, color-mix(in srgb, var(--text-secondary) 14%, transparent) .8px, transparent .9px);
    background-size: 22px 22px;
}
button, input, select, textarea { font: inherit; }
button, a { touch-action: manipulation; }
button:disabled { cursor: not-allowed; }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 3px; }
::selection { background: var(--primary-light); color: var(--text-primary); }
img, svg, video, canvas { max-width: 100%; }
table { max-width: 100%; }

.intinya-brand, .landing-brand, .sidebar-logo { display: inline-flex; align-items: center; gap: 8px; color: inherit; text-decoration: none; white-space: nowrap; }
.intinya-brand-word, .brand-title, .sidebar-logo-text { font-family: var(--font-brand); font-weight: 700; letter-spacing: -.035em; line-height: 1; }
.intinya-brand-word { font-size: 1.2rem; }
.sidebar-logo { gap: 0; color: var(--text-primary); font: 700 1.2rem/1 var(--font-brand); letter-spacing: -.035em; }
.sidebar-logo .intinya-brand-word { color: var(--text-primary); }
.sidebar-program-word { font: inherit; letter-spacing: inherit; }
.sidebar-logo .sidebar-program-word { margin-left: .3em; }
.sidebar-program-word[data-program="utbk"] { color: var(--sidebar-utbk-ink, #b85115); }
.sidebar-program-word[data-program="tka"] { color: var(--sidebar-tka-ink, #8050b7); }
.sidebar-brand-mark { display: none; }
.dash-welcome-text .home-brand-title { display: flex; align-items: baseline; gap: .32em; color: #151313; font: 700 clamp(2rem, 3.2vw, 2.65rem)/1.2 var(--font-brand); letter-spacing: -.035em; }
.home-brand-title .home-brand-prefix { font: inherit; color: inherit; }
.home-brand-title .home-brand-program { font: inherit; color: inherit; }
[data-theme="dark"] .dash-welcome-text .home-brand-title { color: var(--text-primary); }
.intinya-flame-icon, .intinya-icon { display: inline-block; width: 1em; height: 1em; flex: 0 0 auto; vertical-align: middle; }
.intinya-theme-toggle { display: inline-grid; place-items: center; width: 40px; height: 40px; flex: 0 0 auto; border: 1px solid var(--card-border); border-radius: var(--radius-btn); background: var(--card-bg); color: var(--text-primary); cursor: pointer; }
.intinya-theme-toggle:hover { background: var(--surface-hover); border-color: var(--primary); }

.app-sidebar {
    --sidebar-text: var(--text-primary);
    --sidebar-muted: var(--text-muted);
    --sidebar-border: color-mix(in srgb, var(--outline-color) 16%, transparent);
    --sidebar-utbk-ink: #b85115;
    --sidebar-tka-ink: #8050b7;
    background: color-mix(in srgb, var(--card-bg) 82%, transparent);
    color: var(--sidebar-text);
    border: 1px solid var(--sidebar-border);
    backdrop-filter: blur(24px) saturate(140%);
    -webkit-backdrop-filter: blur(24px) saturate(140%);
    box-shadow: 0 8px 28px rgba(0, 0, 0, .045), inset 0 1px 0 color-mix(in srgb, var(--card-bg) 80%, transparent);
}
[data-theme="dark"] .app-sidebar { --sidebar-utbk-ink: #ff9f43; --sidebar-tka-ink: #c084fc; }
.sidebar-nav-group { padding: 1.1rem .8rem; gap: 5px; scrollbar-gutter: auto; scrollbar-width: none; }
.sidebar-nav-group::-webkit-scrollbar { display: none; }
.sidebar-nav-item { min-width: 0; min-height: 44px; border-radius: 10px; margin-inline: 0; }
.sidebar-nav-item:not(.active):hover,
.sidebar-disclosure-title:is(:hover, :focus-visible),
.sidebar-user-brief:is(:hover, :focus-visible) { background: color-mix(in srgb, var(--surface-muted) 75%, transparent); color: var(--text-primary); }
.sidebar-nav-parent.current-branch:not(.active) { background: color-mix(in srgb, var(--primary-light) 80%, transparent); color: var(--text-primary); }
.sidebar-user-brief { color: var(--text-primary); }
.sidebar-avatar-img { border-color: var(--sidebar-border); }
.sidebar-header-toggle:hover { background: var(--surface-muted); border-color: var(--sidebar-border); color: var(--text-primary); }
.sidebar-nav-label, .sidebar-nav-item > span:not(.sidebar-nav-icon):not(.sidebar-nav-badge) { flex: 1 1 auto; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-nav-badge { flex: 0 0 auto; margin-left: auto; white-space: nowrap; line-height: 1.25; }
.sidebar-nav-item.active { box-shadow: none; font-weight: 700; }
.sidebar-nav-child { margin-left: 16px; }
.sidebar-disclosure-title { margin-inline: 0; min-height: 44px; }
.sidebar-disclosure-label { flex: 1; margin-left: 10px; }
.sidebar-family-utbk:not(.active) .sidebar-nav-icon { color: var(--sidebar-utbk-ink); }
.sidebar-family-tka:not(.active) .sidebar-nav-icon { color: var(--sidebar-tka-ink); }
.sidebar-rail-tooltip { position: fixed; z-index: 200; max-width: 220px; padding: 9px 12px; border: 1px solid var(--card-border); border-radius: 10px; background: var(--card-bg); color: var(--text-primary); box-shadow: var(--card-shadow-hover); font: 600 .75rem/1.4 var(--font-body); pointer-events: none; }
.sidebar-rail-tooltip[hidden] { display: none; }
.sidebar-user-streak, .sidebar-user-streak svg { color: var(--primary-text); filter: none; }
.sidebar-header-toggle:focus-visible, .sidebar-nav-item:focus-visible { outline-color: var(--focus-ring); outline-offset: -3px; }
.app-topbar, [data-theme] .app-topbar { background: var(--bg-header); border-bottom-color: var(--card-border); box-shadow: none; }
.app-topbar-inner, .app-view-container { max-width: var(--view-max-w); }
.topbar-leading, .topbar-greeting { min-width: 0; }
.topbar-btn { border-radius: var(--radius-btn); }
.topbar-search-wrap .search-shortcut-hint { border-radius: 999px; }
.search-quick-card:hover { background: var(--primary-light); border-color: var(--primary); transform: none; }
.search-subtest-badge.badge-topic, [data-theme] .search-subtest-badge.badge-topic { background: var(--primary-light); color: var(--primary-text); }
.search-modal-container { border-radius: var(--radius-card); }
.search-modal-input { min-width: 0; }
.search-result-sub { max-width: min(400px, 56vw); }
.search-quick-title { line-height: 1.4; }
.theme-btn-text, .login-btn { min-height: 40px; border-radius: var(--radius-btn); letter-spacing: 0; text-transform: none; }
.theme-btn-text:hover { box-shadow: none; }
.theme-option:hover { color: var(--primary-text); }
.dropdown-content { border-radius: var(--radius-card-sm); box-shadow: var(--card-shadow-hover); }

/* React's isolated document consumes the same semantic states as other pages. */
.intinya-tryout-root { background: var(--canvas-bg) !important; color: var(--text-main) !important; }
.intinya-tryout-header { background: var(--bg-header) !important; color: var(--text-header) !important; border-color: var(--card-border) !important; }
.intinya-tryout-card { background: var(--card-bg) !important; color: var(--text-main) !important; border-color: var(--outline-color) !important; box-shadow: var(--card-shadow) !important; }
.intinya-tryout-subcard { background: var(--surface-muted) !important; color: var(--text-main) !important; border-color: var(--card-border) !important; }
.intinya-tryout-hover:hover { background: var(--surface-hover) !important; border-color: var(--primary) !important; }
.intinya-tryout-muted { color: var(--text-muted) !important; }
.intinya-tryout-accent, .intinya-tryout-logo { background: var(--primary) !important; color: var(--btn-text) !important; border-color: var(--primary) !important; }
.intinya-tryout-accent:hover { background: var(--primary-hover) !important; }
.intinya-tryout-badge { background: var(--primary-light) !important; color: var(--primary-text) !important; border-color: var(--card-border) !important; }
.intinya-tryout-option { background: var(--card-bg) !important; color: var(--text-main) !important; border-color: var(--card-border) !important; }
.intinya-tryout-option:hover, .intinya-tryout-option.is-selected { background: var(--primary-light) !important; color: var(--text-header) !important; border-color: var(--primary) !important; }
.intinya-tryout-option-badge { background: var(--surface-muted) !important; color: var(--text-main) !important; }
.intinya-tryout-doubt { background: var(--warning-light) !important; color: var(--warning) !important; }
.intinya-tryout-doubt.is-active { background: var(--primary) !important; color: var(--btn-text) !important; }
.tryout-mobile-dock { display: none; }
.checkout-card, .status-card, .history-table-container { border-color: var(--outline-color); border-radius: var(--radius-card); box-shadow: none; }
.plan-card, .method-option { border-width: 1px; }
.btn-status-action, .btn-action-primary { box-shadow: none; }
.settings-card, .table-card, .toolbar-card { border-color: var(--outline-color); border-radius: var(--radius-card); }
.kpi-card { border-radius: var(--radius-card-sm); box-shadow: var(--card-shadow); }

@media (min-width: 769px) {
    .app-shell { background: var(--surface-muted); }
    .app-sidebar { top: 12px; bottom: 12px; left: 12px; border: 1px solid var(--sidebar-border); border-radius: 26px; transition: width .24s ease, background .2s ease; }
    .app-main { margin: 12px 12px 12px calc(var(--sidebar-w) + 24px); min-height: calc(100dvh - 24px); border: 1px solid var(--card-border); border-radius: 28px; transition: margin-left .24s ease; }
    .app-topbar { border-radius: 27px 27px 0 0; }
    .app-shell.sidebar-collapsed .app-sidebar { width: 76px; transform: none; }
    .app-shell.sidebar-collapsed .app-main { margin-left: 100px !important; }
    .app-shell.sidebar-collapsed .sidebar-header { flex-direction: column; justify-content: center; gap: 8px; padding: 14px 8px; min-height: 104px; }
    .app-shell.sidebar-collapsed .sidebar-logo { justify-content: center; width: 44px; height: 32px; }
    .app-shell.sidebar-collapsed .sidebar-logo :is(.intinya-brand-word, .sidebar-program-word) { display: none; }
    .app-shell.sidebar-collapsed .sidebar-brand-mark { display: inline; font-size: 1.7rem; }
    .app-shell.sidebar-collapsed .sidebar-brand-mark[data-program="utbk"] { color: #ff9f43; }
    .app-shell.sidebar-collapsed .sidebar-brand-mark[data-program="tka"] { color: #c084fc; }
    .app-shell.sidebar-collapsed .sidebar-nav-group { padding: 14px 10px; gap: 7px; scrollbar-width: none; }
    .app-shell.sidebar-collapsed .sidebar-nav-group::-webkit-scrollbar { display: none; }
    .app-shell.sidebar-collapsed .sidebar-nav-item,
    .app-shell.sidebar-collapsed .sidebar-disclosure-title { justify-content: center; width: 54px; min-height: 44px; box-sizing: border-box; margin: 0; padding: 11px; border-radius: 13px; border-left: 0; }
    .app-shell.sidebar-collapsed :is(.sidebar-nav-label, .sidebar-nav-badge, .sidebar-section-title, .sidebar-disclosure-label) { display: none; }
    .app-shell.sidebar-collapsed .sidebar-disclosure-title::after { display: none; }
    .app-shell.sidebar-collapsed .sidebar-disclosure { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--sidebar-border); }
    .app-shell.sidebar-collapsed .sidebar-footer { justify-content: center; padding: 14px 8px; }
    .app-shell.sidebar-collapsed .sidebar-user-brief { justify-content: center; width: 44px; padding: 4px; }
    .app-shell.sidebar-collapsed .sidebar-user-brief > div { display: none; }
    .app-shell.sidebar-collapsed .sidebar-avatar-img { width: 32px; height: 32px; }
    .app-shell .topbar-sidebar-toggle,
    .app-shell.sidebar-collapsed .topbar-sidebar-toggle { display: none !important; }
}

/* PGK and matrix answers keep a clear selected state in all five themes. */
.tka-badge-pgk { background: var(--info-light); color: var(--info); }
.tka-format-hint { display: inline-block; font-size: .85rem; color: var(--text-muted); margin-left: 8px; font-weight: 500; }
.tka-choice-checkbox { width: 20px; height: 20px; border: 2px solid var(--border-card); border-radius: 5px; display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; color: var(--text-primary); background: var(--card-bg); flex-shrink: 0; margin-right: 6px; transition: background .15s ease, border-color .15s ease; }
.tka-choice[aria-checked="true"] { border-color: var(--primary); background: var(--primary-light); color: var(--text-primary); }
.tka-choice[aria-checked="true"] .tka-choice-checkbox { background: var(--primary); border-color: var(--primary); color: var(--btn-text); }
.tka-matrix-wrap { overflow-x: auto; margin: 16px 0 20px; border: 1px solid var(--border-card); border-radius: var(--radius-card-sm); background: var(--card-bg); }
.tka-matrix-table { width: 100%; border-collapse: collapse; font-size: .93rem; line-height: 1.55; }
.tka-matrix-table th, .tka-matrix-table td { padding: 12px 14px; border-bottom: 1px solid var(--border-card); vertical-align: middle; }
.tka-matrix-table th { background: var(--surface-muted); font-weight: 700; text-align: center; }
.tka-matrix-table th:first-child { text-align: left; }
.tka-matrix-cell-cat { text-align: center; width: 100px; min-width: 80px; }
.tka-matrix-btn { cursor: pointer; border: 1px solid var(--border-card); background: var(--card-bg); color: var(--text-main); border-radius: 8px; min-height: 40px; padding: 7px 14px; font: 600 .85rem var(--font-body); transition: background .15s ease, border-color .15s ease; white-space: nowrap; }
.tka-matrix-btn:hover { border-color: var(--primary); }
.tka-matrix-btn[aria-checked="true"] { background: var(--primary); border-color: var(--primary); color: var(--btn-text); font-weight: 700; }
.tka-review-matrix { margin: 14px 0; }
.tka-review-matrix-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tka-review-matrix-table th, .tka-review-matrix-table td { padding: 10px 12px; border-bottom: 1px solid var(--border-card); }
.tka-review-matrix-table th { background: var(--surface-muted); font-weight: 700; }
.badge-cell-correct { color: var(--success); font-weight: 700; }
.badge-cell-wrong { color: var(--danger); font-weight: 700; }
.tka-diagram-img { display: block; max-width: min(100%, 620px); height: auto; margin: 1rem auto; }

@media (max-width: 768px) {
    .dash-welcome-text .home-brand-title { font-size: clamp(1.85rem, 8vw, 2.3rem); }
    body .intinya-toast { bottom: calc(92px + env(safe-area-inset-bottom, 0px)); }
    .app-shell { min-height: 100dvh; }
    .app-sidebar { visibility: hidden; pointer-events: none; z-index: 120; width: min(84vw, 300px); padding-bottom: env(safe-area-inset-bottom, 0px); }
    .app-sidebar.open { visibility: visible; pointer-events: auto; }
    .sidebar-header { min-height: 64px; padding-inline: 1rem; }
    .app-main { width: 100%; min-width: 0; margin-left: 0 !important; padding-bottom: calc(96px + env(safe-area-inset-bottom, 0px)); }
    .app-topbar { position: sticky; top: 0; height: 64px; min-height: 64px; padding: 0; z-index: 95; }
    .app-topbar-inner { padding: 0 1rem; gap: .6rem; }
    .topbar-greeting { font-size: 0; }
    .topbar-greeting strong { font-size: .88rem; white-space: nowrap; }
    .topbar-actions { gap: .4rem; }
    .mobile-sidebar-toggle, .topbar-sidebar-toggle, .mobile-search-btn { display: inline-flex !important; }
    .app-view-container { padding: 1.25rem 1rem 1.5rem; }
    .mobile-bottom-nav, .tryout-mobile-dock {
        display: flex !important; position: fixed !important; top: auto !important;
        bottom: calc(12px + env(safe-area-inset-bottom, 0px)) !important;
        left: 12px; right: auto; width: calc(100vw - 24px); height: 64px; box-sizing: border-box; padding: 5px;
        border: 1px solid color-mix(in srgb, var(--outline-color, var(--text-secondary)) 22%, transparent);
        border-radius: 999px; background: color-mix(in srgb, var(--card-bg) 68%, transparent);
        backdrop-filter: blur(24px) saturate(160%); -webkit-backdrop-filter: blur(24px) saturate(160%);
        z-index: 110; box-shadow: 0 8px 24px rgba(18, 24, 16, .12), inset 0 1px 0 color-mix(in srgb, var(--card-bg) 80%, transparent); view-transition-name: intinya-mobile-dock;
    }
    .mobile-bottom-indicator { position: absolute; top: 5px; left: 5px; width: calc((100% - 10px) / 5); height: 52px; border-radius: 999px; background: color-mix(in srgb, var(--primary-light) 80%, transparent); border: 1px solid color-mix(in srgb, var(--primary-text) 18%, transparent); box-shadow: inset 0 1px 0 color-mix(in srgb, var(--card-bg) 55%, transparent); pointer-events: none; transform: translate3d(calc(var(--nav-active-index) * 100%), 0, 0); transition: transform .24s cubic-bezier(.22, 1, .36, 1); }
    .mobile-bottom-nav[data-active-index="-1"] .mobile-bottom-indicator { display: none; }
    .mobile-bottom-item { display: flex; flex: 1; flex-direction: column; align-items: center; justify-content: center; gap: 4px; position: relative; z-index: 1; min-width: 0; min-height: 52px; border-radius: 999px; font: 600 .64rem/1.15 var(--font-body); color: var(--text-secondary); text-decoration: none; }
    .mobile-bottom-item svg { width: 20px; height: 20px; }
    .mobile-bottom-item.active { color: var(--primary-text); font-weight: 700; background: transparent; box-shadow: none; transform: none; }
    .mobile-bottom-item:focus-visible { outline: 2px solid var(--primary-text); outline-offset: -3px; }
    ::view-transition-old(intinya-mobile-dock), ::view-transition-new(intinya-mobile-dock) { animation: none; }
    body.tryout-page #root { height: calc(100dvh - 88px - env(safe-area-inset-bottom, 0px)) !important; }
}
@media (max-width: 380px) {
    .app-topbar-inner { padding-inline: .75rem; }
    .topbar-user-badge { display: none; }
    .topbar-actions .topbar-btn { width: 36px; height: 36px; }
    .app-view-container { padding-inline: .875rem; }
    .mobile-bottom-item { font-size: .6rem; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* A small lift helps desktop learners recognise the main cards. */
@media (min-width: 769px) and (hover: hover) and (pointer: fine) {
    body :is(.course-card, .status-mini-card, .dash-target-card, .dash-agenda-card, .yt-subtest-card, .tryout-ext-card, .subtest-analytic-card, .recommendation-card, .stat-overview-card, .day-plan-card, .target-card, .stat-card, .profile-plan-card, .plan-card),
    body.landing-page :is(.preview-card, .feature-box, .subtest-mini-card, .pricing-card, .hero-study-panel, .tryout-showcase) {
        transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    body :is(.course-card, .status-mini-card, .dash-target-card, .dash-agenda-card, .yt-subtest-card, .tryout-ext-card, .subtest-analytic-card, .recommendation-card, .stat-overview-card, .day-plan-card, .target-card, .stat-card, .profile-plan-card, .plan-card):hover,
    body.landing-page :is(.preview-card, .feature-box, .subtest-mini-card, .pricing-card, .hero-study-panel, .tryout-showcase):hover {
        transform: translateY(-3px);
        box-shadow: var(--card-shadow-hover);
    }
}
@media (min-width: 769px) and (hover: hover) and (pointer: fine) and (prefers-reduced-motion: reduce) {
    body :is(.course-card, .status-mini-card, .dash-target-card, .dash-agenda-card, .yt-subtest-card, .tryout-ext-card, .subtest-analytic-card, .recommendation-card, .stat-overview-card, .day-plan-card, .target-card, .stat-card, .profile-plan-card, .plan-card):hover,
    body.landing-page :is(.preview-card, .feature-box, .subtest-mini-card, .pricing-card, .hero-study-panel, .tryout-showcase):hover {
        transform: none;
    }
}