/* =========================================================
   "Bilimdon" — umumiy dizayn tizimi (Bootstrap 5.3 ustidan)
   Yorug' va qorong'i rejim: <html data-bs-theme="light|dark">
   ========================================================= */

:root,
[data-bs-theme="light"] {
    --app-bg: #f6f4ff;
    --app-bg-accent-1: rgba(108, 92, 231, .10);
    --app-bg-accent-2: rgba(0, 184, 148, .08);
    --app-surface: #ffffff;
    --app-surface-2: #f3f0ff;
    --app-border: #e7e2fb;
    --app-text: #2b2840;
    --app-muted: #6f6a88;
    --app-shadow: 0 10px 30px -12px rgba(76, 60, 180, .22);
    --app-shadow-sm: 0 4px 14px -6px rgba(76, 60, 180, .18);

    --app-primary: #6c5ce7;
    --app-primary-hover: #5a49d6;
    --app-primary-soft: #ece8ff;
    --app-green: #12b886;
    --app-green-soft: #e3f9f1;
    --app-yellow: #f59f00;
    --app-yellow-soft: #fff4d6;
    --app-red: #f0506e;
    --app-red-soft: #ffe6eb;
    --app-blue: #339af0;
    --app-blue-soft: #e3f1ff;
    --app-pink: #e64980;
    --app-pink-soft: #ffe3ef;
    --app-orange: #fd7e14;
    --app-orange-soft: #fff0e1;

    --bs-body-bg: var(--app-bg);
    --bs-body-color: var(--app-text);
    --bs-secondary-color: var(--app-muted);
    --bs-border-color: var(--app-border);
    --bs-primary: #6c5ce7;
    --bs-primary-rgb: 108, 92, 231;
    --bs-link-color: #6c5ce7;
    --bs-link-color-rgb: 108, 92, 231;
    --bs-link-hover-color: #5a49d6;
    --bs-link-hover-color-rgb: 90, 73, 214;
    --bs-tertiary-bg: var(--app-surface-2);
}

[data-bs-theme="dark"] {
    --app-bg: #12101b;
    --app-bg-accent-1: rgba(157, 143, 255, .10);
    --app-bg-accent-2: rgba(32, 201, 151, .06);
    --app-surface: #1c1a29;
    --app-surface-2: #252237;
    --app-border: #322d4a;
    --app-text: #eceaf6;
    --app-muted: #a39ebf;
    --app-shadow: 0 12px 34px -14px rgba(0, 0, 0, .7);
    --app-shadow-sm: 0 4px 14px -6px rgba(0, 0, 0, .6);

    --app-primary: #9d8fff;
    --app-primary-hover: #b3a8ff;
    --app-primary-soft: #2b2650;
    --app-green: #38d9a9;
    --app-green-soft: #163a31;
    --app-yellow: #fcc419;
    --app-yellow-soft: #3a3016;
    --app-red: #ff7b93;
    --app-red-soft: #43202a;
    --app-blue: #74c0fc;
    --app-blue-soft: #18304a;
    --app-pink: #f783ac;
    --app-pink-soft: #3f1f2e;
    --app-orange: #ffa94d;
    --app-orange-soft: #3d2a16;

    --bs-body-bg: var(--app-bg);
    --bs-body-color: var(--app-text);
    --bs-secondary-color: var(--app-muted);
    --bs-border-color: var(--app-border);
    --bs-primary: #9d8fff;
    --bs-primary-rgb: 157, 143, 255;
    --bs-link-color: #b3a8ff;
    --bs-link-color-rgb: 179, 168, 255;
    --bs-link-hover-color: #cdc5ff;
    --bs-link-hover-color-rgb: 205, 197, 255;
    --bs-tertiary-bg: var(--app-surface-2);
}

/* ---------- Asos ---------- */
html { scroll-behavior: smooth; }

body {
    font-family: "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 1.05rem;
    background-color: var(--app-bg);
    background-image:
        radial-gradient(900px 500px at 100% -10%, var(--app-bg-accent-1), transparent 60%),
        radial-gradient(700px 500px at -10% 110%, var(--app-bg-accent-2), transparent 60%);
    background-attachment: fixed;
    color: var(--app-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color .25s ease, color .25s ease;
}

main { flex: 1 0 auto; }

h1, h2, h3, h4, h5, h6, .fw-black { font-weight: 800; letter-spacing: -.01em; }
.text-muted, .text-secondary { color: var(--app-muted) !important; }
a { text-decoration: none; }
::selection { background: var(--app-primary); color: #fff; }

:focus-visible {
    outline: 3px solid var(--app-primary);
    outline-offset: 2px;
    border-radius: .5rem;
}

/* ---------- Navbar ---------- */
.app-navbar {
    background: color-mix(in srgb, var(--app-surface) 82%, transparent);
    backdrop-filter: saturate(160%) blur(14px);
    -webkit-backdrop-filter: saturate(160%) blur(14px);
    border-bottom: 1px solid var(--app-border);
    padding-block: .65rem;
}
.app-navbar .navbar-brand {
    display: flex; align-items: center; gap: .6rem;
    font-weight: 900; font-size: 1.3rem; color: var(--app-text);
}
.brand-logo {
    width: 42px; height: 42px; border-radius: 14px;
    display: grid; place-items: center;
    background: linear-gradient(135deg, #8e7cf8, #6c5ce7 55%, #e64980);
    color: #fff; font-size: 1.35rem;
    box-shadow: 0 8px 18px -8px rgba(108, 92, 231, .8);
    transform: rotate(-6deg);
}
.brand-sub { display: block; font-size: .72rem; font-weight: 700; color: var(--app-muted); letter-spacing: .02em; }
.app-navbar .nav-link {
    font-weight: 700; color: var(--app-muted);
    border-radius: .8rem; padding: .5rem .9rem !important;
    display: flex; align-items: center; gap: .45rem;
}
.app-navbar .nav-link:hover { color: var(--app-text); background: var(--app-surface-2); }
.app-navbar .nav-link.active { color: var(--app-primary); background: var(--app-primary-soft); }

.theme-toggle {
    width: 44px; height: 44px; border-radius: 14px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    color: var(--app-text);
    display: inline-grid; place-items: center;
    font-size: 1.15rem;
    transition: transform .2s ease, background .2s ease;
}
.theme-toggle:hover { transform: rotate(-12deg) scale(1.05); background: var(--app-surface-2); }

.user-chip {
    display: inline-flex; align-items: center; gap: .55rem;
    padding: .3rem .8rem .3rem .3rem;
    border-radius: 999px;
    border: 1px solid var(--app-border);
    background: var(--app-surface);
    color: var(--app-text); font-weight: 700;
}
.user-avatar {
    width: 34px; height: 34px; border-radius: 50%;
    display: grid; place-items: center;
    background: var(--app-yellow-soft); color: var(--app-yellow);
    font-size: 1.05rem;
}

/* ---------- Footer ---------- */
.app-footer {
    border-top: 1px solid var(--app-border);
    color: var(--app-muted);
    font-size: .92rem;
    padding: 1.25rem 0;
    margin-top: 3rem;
}

/* ---------- Sahifa sarlavhasi ---------- */
.page-head { padding: 2rem 0 1.25rem; }
.page-head h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0; }
.page-head p { color: var(--app-muted); margin: .35rem 0 0; }
.crumbs { font-size: .9rem; font-weight: 700; color: var(--app-muted); margin-bottom: .4rem; }
.crumbs a { color: var(--app-muted); }
.crumbs a:hover { color: var(--app-primary); }

/* ---------- Kartochkalar ---------- */
.card, .app-card {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 1.4rem;
    box-shadow: var(--app-shadow-sm);
    color: var(--app-text);
}
.app-card { padding: 1.5rem; }
.card-header { background: transparent; border-bottom-color: var(--app-border); }
.section-title {
    font-size: 1.1rem; font-weight: 800; margin-bottom: 1rem;
    display: flex; align-items: center; gap: .5rem;
}

/* Rangli ikonka pufakchasi */
.icon-bubble {
    width: 52px; height: 52px; border-radius: 16px;
    display: grid; place-items: center;
    font-size: 1.5rem; flex-shrink: 0;
}
.icon-bubble.sm { width: 40px; height: 40px; border-radius: 12px; font-size: 1.15rem; }
.tone-primary { background: var(--app-primary-soft); color: var(--app-primary); }
.tone-green   { background: var(--app-green-soft);   color: var(--app-green); }
.tone-yellow  { background: var(--app-yellow-soft);  color: var(--app-yellow); }
.tone-red     { background: var(--app-red-soft);     color: var(--app-red); }
.tone-blue    { background: var(--app-blue-soft);    color: var(--app-blue); }
.tone-pink    { background: var(--app-pink-soft);    color: var(--app-pink); }
.tone-orange  { background: var(--app-orange-soft);  color: var(--app-orange); }

/* ---------- Statistika ---------- */
.stat-card {
    display: flex; align-items: center; gap: 1rem;
    padding: 1.25rem 1.35rem;
    transition: transform .2s ease, box-shadow .2s ease;
    height: 100%;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--app-shadow); }
.stat-value { font-size: 1.9rem; font-weight: 900; line-height: 1; }
.stat-label { color: var(--app-muted); font-weight: 700; font-size: .95rem; margin-top: .25rem; }

/* ---------- Xush kelibsiz banneri ---------- */
.hero {
    position: relative; overflow: hidden;
    border-radius: 1.75rem;
    padding: 2rem;
    color: #fff;
    background: linear-gradient(120deg, #6c5ce7 0%, #8e7cf8 45%, #e64980 100%);
    box-shadow: var(--app-shadow);
}
.hero h1 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
.hero p { opacity: .92; font-size: 1.08rem; max-width: 46ch; }
.hero .hero-art {
    position: absolute; right: 1.5rem; bottom: -1rem;
    font-size: 8.5rem; line-height: 1; opacity: .95;
    filter: drop-shadow(0 10px 20px rgba(0,0,0,.18));
    pointer-events: none; user-select: none;
}
.hero .btn-light { color: #5a49d6; }
@media (max-width: 767.98px) { .hero .hero-art { display: none; } }

/* Tezkor harakatlar */
.quick-tile {
    display: flex; align-items: center; gap: 1rem;
    padding: 1.15rem 1.25rem;
    color: var(--app-text);
    height: 100%;
    transition: transform .2s ease, border-color .2s ease;
}
.quick-tile:hover { transform: translateY(-3px); border-color: var(--app-primary); color: var(--app-text); }
.quick-tile .title { font-weight: 800; }
.quick-tile .desc { color: var(--app-muted); font-size: .92rem; }

/* ---------- Tugmalar ---------- */
.btn {
    --bs-btn-font-weight: 800;
    --bs-btn-border-radius: .95rem;
    --bs-btn-padding-x: 1.15rem;
    --bs-btn-padding-y: .62rem;
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease;
}
.btn:active { transform: scale(.97); }
.btn-lg { --bs-btn-padding-y: .8rem; --bs-btn-padding-x: 1.5rem; --bs-btn-font-size: 1.1rem; }
.btn-sm { --bs-btn-padding-y: .35rem; --bs-btn-padding-x: .75rem; --bs-btn-border-radius: .7rem; }

.btn-primary {
    --bs-btn-bg: var(--app-primary);
    --bs-btn-border-color: var(--app-primary);
    --bs-btn-hover-bg: var(--app-primary-hover);
    --bs-btn-hover-border-color: var(--app-primary-hover);
    --bs-btn-active-bg: var(--app-primary-hover);
    --bs-btn-active-border-color: var(--app-primary-hover);
    --bs-btn-disabled-bg: var(--app-primary);
    --bs-btn-disabled-border-color: var(--app-primary);
    --bs-btn-color: #fff; --bs-btn-hover-color: #fff; --bs-btn-active-color: #fff;
    box-shadow: 0 8px 20px -10px var(--app-primary);
}
[data-bs-theme="dark"] .btn-primary {
    --bs-btn-color: #15122a; --bs-btn-hover-color: #15122a; --bs-btn-active-color: #15122a; --bs-btn-disabled-color: #15122a;
}
.btn-success {
    --bs-btn-bg: var(--app-green); --bs-btn-border-color: var(--app-green);
    --bs-btn-hover-bg: #0ca678; --bs-btn-hover-border-color: #0ca678;
    --bs-btn-active-bg: #0ca678; --bs-btn-disabled-bg: var(--app-green); --bs-btn-disabled-border-color: var(--app-green);
    --bs-btn-color: #fff; --bs-btn-hover-color: #fff;
}
.btn-danger {
    --bs-btn-bg: var(--app-red); --bs-btn-border-color: var(--app-red);
    --bs-btn-hover-bg: #e03158; --bs-btn-hover-border-color: #e03158;
    --bs-btn-active-bg: #e03158; --bs-btn-disabled-bg: var(--app-red); --bs-btn-disabled-border-color: var(--app-red);
    --bs-btn-color: #fff; --bs-btn-hover-color: #fff;
}
.btn-soft {
    --bs-btn-bg: var(--app-primary-soft); --bs-btn-color: var(--app-primary);
    --bs-btn-border-color: transparent;
    --bs-btn-hover-bg: var(--app-primary); --bs-btn-hover-color: #fff; --bs-btn-hover-border-color: transparent;
    --bs-btn-active-bg: var(--app-primary); --bs-btn-active-color: #fff;
}
.btn-ghost {
    --bs-btn-bg: var(--app-surface); --bs-btn-color: var(--app-text);
    --bs-btn-border-color: var(--app-border);
    --bs-btn-hover-bg: var(--app-surface-2); --bs-btn-hover-color: var(--app-text); --bs-btn-hover-border-color: var(--app-border);
    --bs-btn-active-bg: var(--app-surface-2); --bs-btn-active-color: var(--app-text);
}
.btn-icon {
    width: 40px; height: 40px; padding: 0 !important;
    border-radius: 12px !important;
    display: inline-grid; place-items: center;
    border: 1px solid transparent; font-size: 1.05rem;
}
.btn-icon.tone-primary:hover { background: var(--app-primary); color: #fff; }
.btn-icon.tone-green:hover   { background: var(--app-green);   color: #fff; }
.btn-icon.tone-red:hover     { background: var(--app-red);     color: #fff; }
.btn-icon.tone-yellow:hover  { background: var(--app-yellow);  color: #fff; }
.btn-icon.tone-blue:hover    { background: var(--app-blue);    color: #fff; }

/* ---------- Formalar ---------- */
.form-control, .form-select {
    border-radius: .95rem;
    border: 1.5px solid var(--app-border);
    background-color: var(--app-surface-2);
    color: var(--app-text);
    padding: .7rem 1rem;
    font-weight: 600;
}
.form-control::placeholder { color: var(--app-muted); opacity: .8; font-weight: 500; }
.form-control:focus, .form-select:focus {
    border-color: var(--app-primary);
    background-color: var(--app-surface);
    box-shadow: 0 0 0 .25rem rgba(var(--bs-primary-rgb), .18);
    color: var(--app-text);
}
.form-label { font-weight: 800; font-size: .95rem; margin-bottom: .4rem; }
.form-check-input { border: 2px solid var(--app-border); width: 1.2em; height: 1.2em; }
.form-check-input:checked { background-color: var(--app-primary); border-color: var(--app-primary); }
.form-check-input:focus { box-shadow: 0 0 0 .25rem rgba(var(--bs-primary-rgb), .18); border-color: var(--app-primary); }
.form-switch .form-check-input { width: 2.6em; height: 1.4em; }
.input-icon { position: relative; }
.input-icon > i {
    position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
    color: var(--app-muted); font-size: 1.1rem; pointer-events: none;
}
.input-icon > .form-control { padding-left: 2.75rem; }

/* Tanlov kartochkalari (switch o'rniga katta tugmalar) */
.choice-group { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.choice {
    position: relative; cursor: pointer;
    border: 2px solid var(--app-border); border-radius: 1rem;
    padding: .9rem 1rem; display: flex; align-items: center; gap: .7rem;
    background: var(--app-surface-2); font-weight: 800;
    transition: border-color .15s ease, background .15s ease;
}
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice:has(input:checked), .choice.checked { border-color: var(--app-primary); background: var(--app-primary-soft); }
.choice:has(input:focus-visible) { outline: 3px solid var(--app-primary); outline-offset: 2px; }

/* ---------- Jadvallar ---------- */
.table-wrap {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 1.4rem;
    box-shadow: var(--app-shadow-sm);
    overflow: hidden;
}
.app-table { margin: 0; --bs-table-bg: transparent; --bs-table-color: var(--app-text); }
.app-table thead th {
    background: var(--app-surface-2);
    color: var(--app-muted);
    font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .04em;
    border-bottom: 1px solid var(--app-border);
    padding: .9rem 1rem; white-space: nowrap;
}
.app-table tbody td, .app-table tbody th {
    padding: .95rem 1rem; vertical-align: middle;
    border-color: var(--app-border);
}
.app-table tbody tr { transition: background .15s ease; }
.app-table tbody tr:hover { background: var(--app-surface-2); }
.app-table tbody tr:last-child td, .app-table tbody tr:last-child th { border-bottom: 0; }
.row-num {
    width: 34px; height: 34px; border-radius: 11px;
    display: inline-grid; place-items: center;
    background: var(--app-surface-2); color: var(--app-muted);
    font-weight: 800; font-size: .9rem;
}
.cell-title { font-weight: 800; color: var(--app-text); }
.cell-title:hover { color: var(--app-primary); }

/* ---------- Belgilar (badge) ---------- */
.chip {
    display: inline-flex; align-items: center; gap: .35rem;
    padding: .3rem .7rem; border-radius: 999px;
    font-size: .82rem; font-weight: 800; white-space: nowrap;
}

/* Bo'sh holat */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--app-muted); }
.empty-state .emoji { font-size: 3.5rem; line-height: 1; margin-bottom: .75rem; }

/* ---------- Sahifalash ---------- */
.pagination { --bs-pagination-border-radius: .8rem; gap: .35rem; flex-wrap: wrap; }
.pagination .page-link {
    border-radius: .8rem !important;
    border: 1px solid var(--app-border);
    background: var(--app-surface); color: var(--app-text);
    font-weight: 800; min-width: 42px; text-align: center;
}
.pagination .page-link:hover { background: var(--app-surface-2); color: var(--app-primary); }
.pagination .active .page-link { background: var(--app-primary); border-color: var(--app-primary); color: #fff; }
[data-bs-theme="dark"] .pagination .active .page-link { color: #15122a; }
.pagination .disabled .page-link { background: transparent; color: var(--app-muted); opacity: .6; }

/* ---------- Modallar ---------- */
.modal-content {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 1.5rem;
    box-shadow: var(--app-shadow);
}
.modal-header { border-bottom: 1px solid var(--app-border); padding: 1.2rem 1.5rem; }
.modal-title { font-weight: 900; display: flex; align-items: center; gap: .6rem; }
.modal-body { padding: 1.5rem; }
.modal-footer { border-top: 1px solid var(--app-border); padding: 1rem 1.5rem; }
.modal-backdrop.show { opacity: .55; }

/* ---------- Savollar (to'plam sahifasi) ---------- */
.q-item {
    border: 1px solid var(--app-border);
    border-radius: 1.1rem;
    background: var(--app-surface);
    margin-bottom: .75rem;
    overflow: hidden;
    transition: border-color .15s ease;
}
.q-item:hover { border-color: color-mix(in srgb, var(--app-primary) 40%, var(--app-border)); }
.q-item.is-inactive { opacity: .6; }
.q-head { display: flex; align-items: flex-start; gap: .75rem; padding: .9rem 1rem; }
.q-toggle {
    flex: 1; text-align: left; background: none; border: 0; padding: 0;
    color: var(--app-text); font-weight: 700; display: flex; gap: .75rem; align-items: flex-start;
}
.q-num {
    width: 34px; height: 34px; border-radius: 11px; flex-shrink: 0;
    display: grid; place-items: center;
    background: var(--app-primary-soft); color: var(--app-primary);
    font-weight: 900; font-size: .9rem;
}
.q-text { padding-top: .25rem; word-break: break-word; }
.q-chevron { transition: transform .2s ease; color: var(--app-muted); margin-top: .35rem; }
.q-toggle[aria-expanded="true"] .q-chevron { transform: rotate(180deg); }
.q-actions { display: flex; gap: .35rem; flex-shrink: 0; }
.q-body { padding: 0 1rem 1rem 3.6rem; }
.q-answer {
    display: flex; align-items: center; gap: .6rem;
    padding: .55rem .8rem; border-radius: .8rem; margin-bottom: .35rem;
    background: var(--app-surface-2); font-weight: 600;
}
.q-answer.correct { background: var(--app-green-soft); color: var(--app-green); font-weight: 800; }
.q-answer i { font-size: 1.1rem; }

/* Daraja belgilari */
.level-1 { background: var(--app-green-soft);  color: var(--app-green); }
.level-2 { background: var(--app-yellow-soft); color: var(--app-yellow); }
.level-3 { background: var(--app-red-soft);    color: var(--app-red); }

/* Variantlar formasi (savol qo'shish) */
.option-row { display: flex; align-items: flex-start; gap: .75rem; margin-bottom: .7rem; }
.option-row .letter {
    width: 40px; height: 40px; border-radius: 12px; flex-shrink: 0;
    display: grid; place-items: center; font-weight: 900;
    background: var(--app-surface-2); border: 2px solid var(--app-border); cursor: pointer;
    position: relative; margin-top: .2rem;
}
.option-row .letter input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.option-row .letter:has(input:checked) { background: var(--app-green); border-color: var(--app-green); color: #fff; }
.option-row .letter:has(input:focus-visible) { outline: 3px solid var(--app-primary); outline-offset: 2px; }

/* ---------- Imtihon topshirish ---------- */
.question-card { padding: 2rem; }
.question-title { font-size: clamp(1.25rem, 2.4vw, 1.6rem); font-weight: 800; line-height: 1.35; }
.answer-option {
    display: flex; align-items: center; gap: 1rem;
    padding: 1rem 1.15rem; margin-bottom: .8rem;
    border: 2px solid var(--app-border); border-radius: 1.1rem;
    background: var(--app-surface);
    cursor: pointer; font-weight: 700; font-size: 1.08rem;
    transition: border-color .15s ease, background .15s ease, transform .1s ease;
}
.answer-option:hover { border-color: var(--app-primary); background: var(--app-primary-soft); }
.answer-option:active { transform: scale(.995); }
.answer-option input { position: absolute; opacity: 0; pointer-events: none; }
.answer-option .letter {
    width: 44px; height: 44px; border-radius: 14px; flex-shrink: 0;
    display: grid; place-items: center; font-weight: 900;
    background: var(--app-surface-2); color: var(--app-muted);
    transition: background .15s ease, color .15s ease;
}
.answer-option.selected, .answer-option:has(input:checked) { border-color: var(--app-primary); background: var(--app-primary-soft); }
.answer-option.selected .letter, .answer-option:has(input:checked) .letter { background: var(--app-primary); color: #fff; }
.answer-option.is-locked { cursor: default; }
.answer-option.is-locked:hover { border-color: var(--app-border); background: var(--app-surface); }
.answer-option.is-correct { border-color: var(--app-green); background: var(--app-green-soft); }
.answer-option.is-correct .letter { background: var(--app-green); color: #fff; }
.answer-option.is-wrong { border-color: var(--app-red); background: var(--app-red-soft); }
.answer-option.is-wrong .letter { background: var(--app-red); color: #fff; }
.answer-option.is-correct:hover { background: var(--app-green-soft); border-color: var(--app-green); }
.answer-option.is-wrong:hover { background: var(--app-red-soft); border-color: var(--app-red); }

.q-nav { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: .5rem; }
.q-nav a {
    height: 44px; border-radius: 13px;
    display: grid; place-items: center;
    font-weight: 900; color: var(--app-muted);
    background: var(--app-surface-2); border: 2px solid transparent;
    transition: transform .15s ease;
}
.q-nav a:hover { transform: translateY(-2px); }
.q-nav a.st-solved  { background: var(--app-blue-soft);  color: var(--app-blue); }
.q-nav a.st-correct { background: var(--app-green-soft); color: var(--app-green); }
.q-nav a.st-wrong   { background: var(--app-red-soft);   color: var(--app-red); }
.q-nav a.is-current { border-color: var(--app-primary); color: var(--app-primary); }
.legend { display: flex; flex-wrap: wrap; gap: .4rem .9rem; font-size: .82rem; color: var(--app-muted); font-weight: 700; }
.legend span::before {
    content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 4px;
    margin-right: .35rem; vertical-align: middle; background: var(--dot);
}

.timer {
    display: flex; align-items: center; gap: .75rem;
    font-size: 2rem; font-weight: 900; font-variant-numeric: tabular-nums;
}
.timer.is-low { color: var(--app-red); animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .55; } }

.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li {
    display: flex; justify-content: space-between; gap: 1rem;
    padding: .7rem 0; border-bottom: 1px dashed var(--app-border);
}
.info-list li:last-child { border-bottom: 0; }
.info-list .k { color: var(--app-muted); font-weight: 700; display: flex; align-items: center; gap: .5rem; }
.info-list .v { font-weight: 800; text-align: right; }

/* ---------- Natija ---------- */
.result-ring {
    --deg: 0;
    width: 220px; height: 220px; border-radius: 50%;
    background: conic-gradient(var(--app-green) calc(var(--deg) * 1deg), var(--app-red-soft) 0);
    display: grid; place-items: center; margin: 0 auto;
    box-shadow: var(--app-shadow);
}
.result-ring .inner {
    width: 170px; height: 170px; border-radius: 50%;
    background: var(--app-surface);
    display: grid; place-items: center; text-align: center;
}
.result-ring .pct { font-size: 2.6rem; font-weight: 900; line-height: 1; }
.result-ring .lbl { font-size: .85rem; color: var(--app-muted); font-weight: 800; }
.result-emoji { font-size: 4rem; line-height: 1; }

/* ---------- Yuklanish oynasi ---------- */
.app-loader {
    position: fixed; inset: 0; z-index: 2000;
    display: none; place-items: center;
    background: color-mix(in srgb, var(--app-bg) 75%, transparent);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.app-loader.show { display: grid; }
.app-loader .box { text-align: center; padding: 2rem 2.5rem; }
.spinner-magic {
    width: 84px; height: 84px; margin: 0 auto 1.25rem;
    border-radius: 50%;
    border: 8px solid var(--app-primary-soft);
    border-top-color: var(--app-primary);
    border-right-color: var(--app-pink);
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Kirish / ro'yxatdan o'tish ---------- */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1.05fr 1fr; }
.auth-art {
    position: relative; overflow: hidden;
    background: linear-gradient(140deg, #6c5ce7 0%, #8e7cf8 45%, #e64980 100%);
    color: #fff; padding: 3rem;
    display: flex; flex-direction: column; justify-content: space-between;
}
.auth-art h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); max-width: 16ch; }
.auth-art p { opacity: .92; font-size: 1.1rem; max-width: 40ch; }
.floaty { position: absolute; font-size: 3.2rem; animation: floaty 6s ease-in-out infinite; user-select: none; }
.floaty:nth-child(2) { animation-delay: -1.5s; }
.floaty:nth-child(3) { animation-delay: -3s; }
.floaty:nth-child(4) { animation-delay: -4.5s; }
@keyframes floaty { 50% { transform: translateY(-14px) rotate(6deg); } }
.auth-panel { display: grid; place-items: center; padding: 2rem 1.25rem; position: relative; }
.auth-card { width: 100%; max-width: 430px; padding: 2.25rem; }
.auth-card h1 { font-size: 1.75rem; }
.auth-panel .theme-toggle { position: absolute; top: 1.25rem; right: 1.25rem; }
@media (max-width: 991.98px) {
    .auth-wrap { grid-template-columns: 1fr; }
    .auth-art { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* Alertlar */
.alert { border-radius: 1rem; border: 0; font-weight: 700; }
.alert-danger { background: var(--app-red-soft); color: var(--app-red); }
.alert-success { background: var(--app-green-soft); color: var(--app-green); }

/* Toast (nusxa olindi va h.k.) */
.app-toast {
    position: fixed; left: 50%; bottom: 1.5rem; transform: translate(-50%, 150%);
    background: var(--app-text); color: var(--app-bg);
    padding: .8rem 1.25rem; border-radius: 1rem; font-weight: 800;
    box-shadow: var(--app-shadow); z-index: 3000;
    transition: transform .3s ease;
}
.app-toast.show { transform: translate(-50%, 0); }