/* ==========================================================================
   core.css - EduLiteracy dizayn tizimi
   Barcha sahifalar uchun umumiy poydevor: ranglar, tipografiya, komponentlar.
   Yorug' va qorong'i rejim qo'llab-quvvatlanadi.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokenlar
   -------------------------------------------------------------------------- */
:root {
    /* Asosiy rang - indigo */
    --brand-50:  #EEF2FF;
    --brand-100: #E0E7FF;
    --brand-200: #C7D2FE;
    --brand-300: #A5B4FC;
    --brand-400: #818CF8;
    --brand-500: #6366F1;
    --brand-600: #4F46E5;
    --brand-700: #4338CA;
    --brand-800: #3730A3;

    /* Yuza va matn */
    --bg:            #F5F6FB;
    --bg-pattern:    #EDEFF8;
    --surface:       #FFFFFF;
    --surface-2:     #F8FAFC;
    --surface-3:     #F1F5F9;
    --border:        #E4E8F0;
    --border-strong: #CBD5E1;

    --text:       #0F172A;
    --text-muted: #55617A;
    --text-faint: #8A95AB;
    --text-on-brand: #FFFFFF;

    --brand:       var(--brand-600);
    --brand-hover: var(--brand-700);
    --brand-soft:  var(--brand-50);
    --brand-text:  var(--brand-700);
    --brand-ring:  rgba(79, 70, 229, .32);

    /* Semantik ranglar */
    --safe:       #059669;
    --safe-soft:  #ECFDF5;
    --safe-text:  #047857;
    --safe-border:#A7F3D0;

    --warn:       #D97706;
    --warn-soft:  #FFFBEB;
    --warn-text:  #B45309;
    --warn-border:#FDE68A;

    --danger:     #E11D48;
    --danger-soft:#FFF1F3;
    --danger-text:#BE123C;
    --danger-border:#FECDD3;

    --info:       #0284C7;
    --info-soft:  #F0F9FF;
    --info-text:  #0369A1;
    --info-border:#BAE6FD;

    /* Geometriya */
    --r-xs: 6px;
    --r-sm: 9px;
    --r:    13px;
    --r-lg: 18px;
    --r-xl: 24px;
    --r-full: 999px;

    --sh-xs: 0 1px 2px rgba(15, 23, 42, .05);
    --sh-sm: 0 1px 3px rgba(15, 23, 42, .07), 0 1px 2px rgba(15, 23, 42, .04);
    --sh:    0 4px 12px rgba(15, 23, 42, .07), 0 1px 3px rgba(15, 23, 42, .05);
    --sh-lg: 0 16px 40px rgba(15, 23, 42, .12), 0 4px 12px rgba(15, 23, 42, .06);
    --sh-xl: 0 28px 70px rgba(15, 23, 42, .18);

    --ring: 0 0 0 3px var(--brand-ring);

    --nav-h: 62px;
    --maxw: 1180px;

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
            'Helvetica Neue', Arial, sans-serif;
    --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas,
            'Liberation Mono', monospace;

    --ease: cubic-bezier(.4, 0, .2, 1);
    --t: .18s var(--ease);

    color-scheme: light;
}

/* Qorong'i rejim - tizim sozlamasi bo'yicha */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg:            #0B1020;
        --bg-pattern:    #10162C;
        --surface:       #141B2E;
        --surface-2:     #1A2238;
        --surface-3:     #212C45;
        --border:        #27324C;
        --border-strong: #3A4765;

        --text:       #EEF2F9;
        --text-muted: #A3AECA;
        --text-faint: #6F7CA0;

        --brand:       var(--brand-500);
        --brand-hover: var(--brand-400);
        --brand-soft:  rgba(99, 102, 241, .14);
        --brand-text:  #A5B4FC;
        --brand-ring:  rgba(129, 140, 248, .35);

        --safe:       #10B981;
        --safe-soft:  rgba(16, 185, 129, .13);
        --safe-text:  #6EE7B7;
        --safe-border:rgba(16, 185, 129, .3);

        --warn:       #F59E0B;
        --warn-soft:  rgba(245, 158, 11, .13);
        --warn-text:  #FCD34D;
        --warn-border:rgba(245, 158, 11, .3);

        --danger:     #F43F5E;
        --danger-soft:rgba(244, 63, 94, .13);
        --danger-text:#FDA4AF;
        --danger-border:rgba(244, 63, 94, .3);

        --info:       #0EA5E9;
        --info-soft:  rgba(14, 165, 233, .13);
        --info-text:  #7DD3FC;
        --info-border:rgba(14, 165, 233, .3);

        --sh-xs: 0 1px 2px rgba(0, 0, 0, .3);
        --sh-sm: 0 1px 3px rgba(0, 0, 0, .35);
        --sh:    0 4px 14px rgba(0, 0, 0, .4);
        --sh-lg: 0 18px 44px rgba(0, 0, 0, .5);
        --sh-xl: 0 30px 74px rgba(0, 0, 0, .6);

        color-scheme: dark;
    }
}

/* Qorong'i rejim - qo'lda tanlangan */
:root[data-theme="dark"] {
    --bg:            #0B1020;
    --bg-pattern:    #10162C;
    --surface:       #141B2E;
    --surface-2:     #1A2238;
    --surface-3:     #212C45;
    --border:        #27324C;
    --border-strong: #3A4765;

    --text:       #EEF2F9;
    --text-muted: #A3AECA;
    --text-faint: #6F7CA0;

    --brand:       var(--brand-500);
    --brand-hover: var(--brand-400);
    --brand-soft:  rgba(99, 102, 241, .14);
    --brand-text:  #A5B4FC;
    --brand-ring:  rgba(129, 140, 248, .35);

    --safe:       #10B981;
    --safe-soft:  rgba(16, 185, 129, .13);
    --safe-text:  #6EE7B7;
    --safe-border:rgba(16, 185, 129, .3);

    --warn:       #F59E0B;
    --warn-soft:  rgba(245, 158, 11, .13);
    --warn-text:  #FCD34D;
    --warn-border:rgba(245, 158, 11, .3);

    --danger:     #F43F5E;
    --danger-soft:rgba(244, 63, 94, .13);
    --danger-text:#FDA4AF;
    --danger-border:rgba(244, 63, 94, .3);

    --info:       #0EA5E9;
    --info-soft:  rgba(14, 165, 233, .13);
    --info-text:  #7DD3FC;
    --info-border:rgba(14, 165, 233, .3);

    --sh-xs: 0 1px 2px rgba(0, 0, 0, .3);
    --sh-sm: 0 1px 3px rgba(0, 0, 0, .35);
    --sh:    0 4px 14px rgba(0, 0, 0, .4);
    --sh-lg: 0 18px 44px rgba(0, 0, 0, .5);
    --sh-xl: 0 30px 74px rgba(0, 0, 0, .6);

    color-scheme: dark;
}

/* --------------------------------------------------------------------------
   2. Ohang (tone) sinflari - o'lchov va laboratoriyalarni rangli ajratish
   -------------------------------------------------------------------------- */
.tone-indigo  { --tone: #4F46E5; --tone-soft: #EEF2FF; --tone-text: #4338CA; }
.tone-violet  { --tone: #7C3AED; --tone-soft: #F5F3FF; --tone-text: #6D28D9; }
.tone-sky     { --tone: #0284C7; --tone-soft: #F0F9FF; --tone-text: #0369A1; }
.tone-teal    { --tone: #0D9488; --tone-soft: #F0FDFA; --tone-text: #0F766E; }
.tone-emerald { --tone: #059669; --tone-soft: #ECFDF5; --tone-text: #047857; }
.tone-amber   { --tone: #D97706; --tone-soft: #FFFBEB; --tone-text: #B45309; }
.tone-rose    { --tone: #E11D48; --tone-soft: #FFF1F3; --tone-text: #BE123C; }
.tone-slate   { --tone: #64748B; --tone-soft: #F8FAFC; --tone-text: #475569; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .tone-indigo  { --tone: #818CF8; --tone-soft: rgba(99,102,241,.15);  --tone-text: #A5B4FC; }
    :root:not([data-theme="light"]) .tone-violet  { --tone: #A78BFA; --tone-soft: rgba(139,92,246,.15);  --tone-text: #C4B5FD; }
    :root:not([data-theme="light"]) .tone-sky     { --tone: #38BDF8; --tone-soft: rgba(14,165,233,.15);  --tone-text: #7DD3FC; }
    :root:not([data-theme="light"]) .tone-teal    { --tone: #2DD4BF; --tone-soft: rgba(20,184,166,.15);  --tone-text: #5EEAD4; }
    :root:not([data-theme="light"]) .tone-emerald { --tone: #34D399; --tone-soft: rgba(16,185,129,.15);  --tone-text: #6EE7B7; }
    :root:not([data-theme="light"]) .tone-amber   { --tone: #FBBF24; --tone-soft: rgba(245,158,11,.15);  --tone-text: #FCD34D; }
    :root:not([data-theme="light"]) .tone-rose    { --tone: #FB7185; --tone-soft: rgba(244,63,94,.15);   --tone-text: #FDA4AF; }
    :root:not([data-theme="light"]) .tone-slate   { --tone: #94A3B8; --tone-soft: rgba(100,116,139,.15); --tone-text: #CBD5E1; }
}
:root[data-theme="dark"] .tone-indigo  { --tone: #818CF8; --tone-soft: rgba(99,102,241,.15);  --tone-text: #A5B4FC; }
:root[data-theme="dark"] .tone-violet  { --tone: #A78BFA; --tone-soft: rgba(139,92,246,.15);  --tone-text: #C4B5FD; }
:root[data-theme="dark"] .tone-sky     { --tone: #38BDF8; --tone-soft: rgba(14,165,233,.15);  --tone-text: #7DD3FC; }
:root[data-theme="dark"] .tone-teal    { --tone: #2DD4BF; --tone-soft: rgba(20,184,166,.15);  --tone-text: #5EEAD4; }
:root[data-theme="dark"] .tone-emerald { --tone: #34D399; --tone-soft: rgba(16,185,129,.15);  --tone-text: #6EE7B7; }
:root[data-theme="dark"] .tone-amber   { --tone: #FBBF24; --tone-soft: rgba(245,158,11,.15);  --tone-text: #FCD34D; }
:root[data-theme="dark"] .tone-rose    { --tone: #FB7185; --tone-soft: rgba(244,63,94,.15);   --tone-text: #FDA4AF; }
:root[data-theme="dark"] .tone-slate   { --tone: #94A3B8; --tone-soft: rgba(100,116,139,.15); --tone-text: #CBD5E1; }

/* --------------------------------------------------------------------------
   3. Asos
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

h1, h2, h3, h4, h5 { margin: 0; font-weight: 650; line-height: 1.25; letter-spacing: -.015em; }
h1 { font-size: 1.85rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.12rem; }
h4 { font-size: 1rem; }
p  { margin: 0 0 .75rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--brand-text); text-decoration: none; }
a:hover { text-decoration: underline; }

small { font-size: .82rem; }
code, kbd { font-family: var(--mono); font-size: .88em; }

kbd {
    display: inline-block;
    padding: .1em .45em;
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: var(--r-xs);
    background: var(--surface-2);
    font-size: .8em;
    color: var(--text-muted);
}

hr { border: 0; border-top: 1px solid var(--border); margin: 1.25rem 0; }

img { max-width: 100%; display: block; }

::selection { background: var(--brand-200); color: var(--text); }

:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: var(--r-xs);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
        scroll-behavior: auto !important;
    }
}

/* Skrol chizig'i */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--r-full);
    border: 3px solid var(--bg);
}

/* --------------------------------------------------------------------------
   4. Tuzilma
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 16px;
}
.container-narrow { max-width: 760px; }
.container-wide   { max-width: 1400px; }

.page { padding: 1.5rem 0 4rem; }

.stack    { display: flex; flex-direction: column; gap: 1rem; }
.stack-sm { display: flex; flex-direction: column; gap: .5rem; }
.stack-lg { display: flex; flex-direction: column; gap: 1.75rem; }

.row {
    display: flex;
    align-items: center;
    gap: .65rem;
    flex-wrap: wrap;
}
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.row-tight { gap: .35rem; }
.row-top { align-items: flex-start; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(175px, 1fr)); }

.spacer { flex: 1 1 auto; }

/* --------------------------------------------------------------------------
   5. Yuqori panel
   -------------------------------------------------------------------------- */
.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border);
}
@supports not (backdrop-filter: blur(1px)) {
    .topbar { background: var(--surface); }
}

.topbar-inner {
    height: var(--nav-h);
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 16px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    font-weight: 700;
    font-size: 1.02rem;
    letter-spacing: -.02em;
    color: var(--text);
    text-decoration: none;
    flex-shrink: 0;
}
.brand:hover { text-decoration: none; }

.brand-mark {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, var(--brand-500), var(--brand-700));
    color: #fff;
    font-size: 1rem;
    box-shadow: 0 2px 8px var(--brand-ring);
    flex-shrink: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: .2rem;
    margin-left: .5rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .5rem .8rem;
    border-radius: var(--r-sm);
    font-size: .92rem;
    font-weight: 550;
    color: var(--text-muted);
    text-decoration: none;
    white-space: nowrap;
    transition: background var(--t), color var(--t);
    border: 0;
    background: none;
    cursor: pointer;
    font-family: inherit;
}
.nav-link:hover { background: var(--surface-3); color: var(--text); text-decoration: none; }
.nav-link.active { background: var(--brand-soft); color: var(--brand-text); }
.nav-link i { font-size: 1.05em; }

.nav-toggle {
    display: none;
    margin-left: auto;
}

@media (max-width: 860px) {
    .nav-toggle { display: inline-flex; }
    .nav {
        position: fixed;
        inset: var(--nav-h) 0 auto 0;
        flex-direction: column;
        align-items: stretch;
        gap: .15rem;
        padding: .75rem 16px 1rem;
        margin: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--sh-lg);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform .22s var(--ease), opacity .22s var(--ease);
        max-height: calc(100vh - var(--nav-h));
        overflow-y: auto;
    }
    .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { padding: .7rem .8rem; font-size: 1rem; }
}

/* --------------------------------------------------------------------------
   6. Kartalar
   -------------------------------------------------------------------------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--sh-sm);
}
.card-pad { padding: 1.15rem 1.25rem; }
.card-head {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.card-body { padding: 1.15rem 1.25rem; }
.card-foot {
    padding: .9rem 1.25rem;
    border-top: 1px solid var(--border);
    background: var(--surface-2);
    border-radius: 0 0 var(--r-lg) var(--r-lg);
}
.card-title { font-size: 1rem; font-weight: 650; display: flex; align-items: center; gap: .5rem; }
.card-title i { color: var(--text-faint); }

.card-hover { transition: transform var(--t), box-shadow var(--t), border-color var(--t); }
.card-hover:hover { transform: translateY(-2px); box-shadow: var(--sh-lg); border-color: var(--border-strong); }

/* Statistika kartasi */
.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 1rem 1.1rem;
    box-shadow: var(--sh-xs);
    display: flex;
    flex-direction: column;
    gap: .3rem;
    min-width: 0;
}
.stat-label {
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: .05em;
    display: flex;
    align-items: center;
    gap: .35rem;
}
.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -.03em;
    font-variant-numeric: tabular-nums;
}
.stat-sub { font-size: .82rem; color: var(--text-muted); }

/* --------------------------------------------------------------------------
   7. Tugmalar
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    padding: .58rem 1.05rem;
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    font-family: inherit;
    font-size: .92rem;
    font-weight: 600;
    line-height: 1.35;
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    transition: background var(--t), border-color var(--t), color var(--t),
                transform .1s var(--ease), box-shadow var(--t);
    -webkit-tap-highlight-color: transparent;
}
.btn:hover { text-decoration: none; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

.btn-primary {
    background: var(--brand);
    color: var(--text-on-brand);
    box-shadow: 0 1px 2px rgba(15,23,42,.1);
}
.btn-primary:hover:not(:disabled) { background: var(--brand-hover); }

.btn-secondary {
    background: var(--surface);
    border-color: var(--border-strong);
    color: var(--text);
}
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); border-color: var(--text-faint); }

.btn-ghost { background: transparent; color: var(--text-muted); }
.btn-ghost:hover:not(:disabled) { background: var(--surface-3); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { filter: brightness(.93); }

.btn-soft { background: var(--brand-soft); color: var(--brand-text); }
.btn-soft:hover:not(:disabled) { background: var(--brand-100); }

.btn-sm { padding: .38rem .7rem; font-size: .84rem; border-radius: var(--r-xs); }
.btn-lg { padding: .78rem 1.5rem; font-size: 1rem; border-radius: var(--r); }
.btn-block { width: 100%; }
.btn-icon { padding: .5rem; width: 36px; height: 36px; }
.btn-icon.btn-sm { width: 30px; height: 30px; padding: .3rem; }

/* --------------------------------------------------------------------------
   8. Shakl elementlari
   -------------------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: .35rem; }
.label { font-size: .85rem; font-weight: 600; color: var(--text-muted); }
.hint  { font-size: .8rem; color: var(--text-faint); }

.input, .select, .textarea {
    width: 100%;
    padding: .6rem .8rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--r-sm);
    background: var(--surface);
    color: var(--text);
    font-family: inherit;
    font-size: .94rem;
    line-height: 1.45;
    transition: border-color var(--t), box-shadow var(--t);
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input:focus, .select:focus, .textarea:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: var(--ring);
}
.input:disabled, .select:disabled, .textarea:disabled {
    background: var(--surface-3);
    color: var(--text-faint);
    cursor: not-allowed;
}
.textarea { resize: vertical; min-height: 88px; }

.select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238A95AB' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right .7rem center;
    padding-right: 2.1rem;
}

/* --------------------------------------------------------------------------
   9. Nishonlar va chiplar
   -------------------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .18rem .55rem;
    border-radius: var(--r-full);
    font-size: .76rem;
    font-weight: 650;
    line-height: 1.5;
    white-space: nowrap;
    background: var(--surface-3);
    color: var(--text-muted);
    border: 1px solid transparent;
}
.badge-safe   { background: var(--safe-soft);   color: var(--safe-text);   border-color: var(--safe-border); }
.badge-warn   { background: var(--warn-soft);   color: var(--warn-text);   border-color: var(--warn-border); }
.badge-danger { background: var(--danger-soft); color: var(--danger-text); border-color: var(--danger-border); }
.badge-info   { background: var(--info-soft);   color: var(--info-text);   border-color: var(--info-border); }
.badge-brand  { background: var(--brand-soft);  color: var(--brand-text);  border-color: var(--brand-200); }
.badge-tone   { background: var(--tone-soft);   color: var(--tone-text);   border-color: transparent; }

.dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

/* Belgilanadigan chip (checkbox) */
.chip {
    display: inline-flex;
    align-items: flex-start;
    gap: .5rem;
    padding: .5rem .75rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--r-sm);
    background: var(--surface);
    cursor: pointer;
    font-size: .88rem;
    line-height: 1.4;
    transition: border-color var(--t), background var(--t), box-shadow var(--t);
    text-align: left;
    width: 100%;
    font-family: inherit;
    color: var(--text);
}
.chip:hover { border-color: var(--tone, var(--brand)); background: var(--surface-2); }
.chip.selected {
    border-color: var(--tone, var(--brand));
    background: var(--tone-soft, var(--brand-soft));
    box-shadow: inset 0 0 0 1px var(--tone, var(--brand));
}
.chip-box {
    width: 17px; height: 17px;
    border: 2px solid var(--border-strong);
    border-radius: 5px;
    flex-shrink: 0;
    margin-top: .12rem;
    display: grid;
    place-items: center;
    transition: all var(--t);
    background: var(--surface);
}
.chip.selected .chip-box {
    background: var(--tone, var(--brand));
    border-color: var(--tone, var(--brand));
}
.chip-box::after {
    content: '';
    width: 9px; height: 5px;
    border-left: 2px solid #fff;
    border-bottom: 2px solid #fff;
    transform: rotate(-45deg) scale(0);
    transition: transform var(--t);
    margin-top: -2px;
}
.chip.selected .chip-box::after { transform: rotate(-45deg) scale(1); }
.chip-text { min-width: 0; }
.chip-label { font-weight: 600; }
.chip-hint { font-size: .78rem; color: var(--text-faint); margin-top: .1rem; }

/* --------------------------------------------------------------------------
   10. Jadval
   -------------------------------------------------------------------------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem;
}
.table th {
    text-align: left;
    font-size: .76rem;
    font-weight: 650;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-faint);
    padding: .65rem .85rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    background: var(--surface-2);
}
.table td {
    padding: .7rem .85rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background var(--t); }
.table tbody tr:hover { background: var(--surface-2); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------------------
   11. Progress / o'lchagich
   -------------------------------------------------------------------------- */
.meter {
    height: 7px;
    border-radius: var(--r-full);
    background: var(--surface-3);
    overflow: hidden;
}
.meter-fill {
    height: 100%;
    border-radius: var(--r-full);
    background: var(--tone, var(--brand));
    transition: width .6s var(--ease);
}
.meter-lg { height: 10px; }

/* Aylana ko'rsatkich */
.gauge { position: relative; width: 112px; height: 112px; flex-shrink: 0; }
.gauge svg { transform: rotate(-90deg); display: block; }
.gauge-track { stroke: var(--surface-3); }
.gauge-fill {
    stroke: var(--tone, var(--brand));
    stroke-linecap: round;
    transition: stroke-dashoffset .8s var(--ease);
}
.gauge-text {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
}
.gauge-num { font-size: 1.7rem; font-weight: 700; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.gauge-cap { font-size: .7rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: .05em; margin-top: .2rem; }

/* --------------------------------------------------------------------------
   12. Modal
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(9, 13, 28, .55);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}
.modal.open { display: flex; animation: fade .18s var(--ease); }

.modal-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    box-shadow: var(--sh-xl);
    width: 100%;
    max-width: 520px;
    max-height: calc(100vh - 32px);
    display: flex;
    flex-direction: column;
    animation: pop .22s var(--ease);
}
.modal-lg { max-width: 760px; }
.modal-head {
    padding: 1.1rem 1.35rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.modal-body { padding: 1.35rem; overflow-y: auto; }
.modal-foot {
    padding: 1rem 1.35rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: .6rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop {
    from { opacity: 0; transform: translateY(12px) scale(.97); }
    to   { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   13. Toast xabarlari
   -------------------------------------------------------------------------- */
.toasts {
    position: fixed;
    z-index: 200;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    max-width: calc(100vw - 40px);
    pointer-events: none;
}
.toast {
    display: flex;
    align-items: flex-start;
    gap: .6rem;
    padding: .75rem 1rem;
    border-radius: var(--r);
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--brand);
    box-shadow: var(--sh-lg);
    font-size: .9rem;
    animation: slide .24s var(--ease);
    pointer-events: auto;
    max-width: 380px;
}
.toast.ok   { border-left-color: var(--safe); }
.toast.warn { border-left-color: var(--warn); }
.toast.err  { border-left-color: var(--danger); }
.toast i { font-size: 1.05rem; flex-shrink: 0; margin-top: .05rem; }
.toast.ok i   { color: var(--safe); }
.toast.warn i { color: var(--warn); }
.toast.err i  { color: var(--danger); }
.toast.hide { animation: slideout .2s var(--ease) forwards; }

@keyframes slide { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }
@keyframes slideout { to { opacity: 0; transform: translateX(20px); } }

@media (max-width: 520px) {
    .toasts { left: 16px; right: 16px; bottom: 16px; }
    .toast { max-width: none; }
}

/* --------------------------------------------------------------------------
   14. Bo'sh holat / yuklanish
   -------------------------------------------------------------------------- */
.empty {
    text-align: center;
    padding: 2.75rem 1.25rem;
    color: var(--text-muted);
}
.empty-icon {
    width: 54px; height: 54px;
    margin: 0 auto .85rem;
    border-radius: var(--r-lg);
    display: grid;
    place-items: center;
    background: var(--surface-3);
    color: var(--text-faint);
    font-size: 1.5rem;
}
.empty-title { font-weight: 650; color: var(--text); margin-bottom: .25rem; }
.empty-text { font-size: .9rem; max-width: 380px; margin: 0 auto; }

.skeleton {
    background: linear-gradient(90deg, var(--surface-3) 25%, var(--surface-2) 50%, var(--surface-3) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s infinite;
    border-radius: var(--r-sm);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

.spinner {
    width: 17px; height: 17px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin .65s linear infinite;
    display: inline-block;
    flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --------------------------------------------------------------------------
   15. Yordamchi sinflar
   -------------------------------------------------------------------------- */
.muted  { color: var(--text-muted); }
.faint  { color: var(--text-faint); }
.tone-c { color: var(--tone, var(--brand)); }
.safe-c { color: var(--safe-text); }
.warn-c { color: var(--warn-text); }
.dang-c { color: var(--danger-text); }

.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-sm  { font-size: .85rem; }
.fs-xs  { font-size: .78rem; }
.nums   { font-variant-numeric: tabular-nums; }
.mono   { font-family: var(--mono); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.break  { overflow-wrap: anywhere; word-break: break-word; }

.hidden { display: none !important; }
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.page-title {
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -.025em;
    margin-bottom: .2rem;
}
.page-sub { color: var(--text-muted); font-size: .94rem; }

.section-title {
    font-size: .8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-faint);
    display: flex;
    align-items: center;
    gap: .45rem;
}

/* Avatar */
.avatar {
    width: 34px; height: 34px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--brand-soft);
    color: var(--brand-text);
    font-weight: 700;
    font-size: .8rem;
    flex-shrink: 0;
    letter-spacing: .01em;
}
.avatar-lg { width: 46px; height: 46px; font-size: 1rem; }
.avatar-tone { background: var(--tone-soft); color: var(--tone-text); }

/* Ikonka doirasi */
.icon-box {
    width: 40px; height: 40px;
    border-radius: var(--r);
    display: grid;
    place-items: center;
    background: var(--tone-soft, var(--brand-soft));
    color: var(--tone, var(--brand));
    font-size: 1.15rem;
    flex-shrink: 0;
}
.icon-box-lg { width: 52px; height: 52px; font-size: 1.45rem; border-radius: var(--r-lg); }
.icon-box-sm { width: 30px; height: 30px; font-size: .92rem; border-radius: var(--r-sm); }

/* Yulduzlar */
.stars { display: inline-flex; gap: 1px; color: var(--warn); font-size: .88rem; }
.stars .off { color: var(--border-strong); }

/* Rejim almashtirgich */
.theme-btn { position: relative; }
.theme-btn .bi-moon-stars { display: none; }
:root[data-theme="dark"] .theme-btn .bi-sun { display: none; }
:root[data-theme="dark"] .theme-btn .bi-moon-stars { display: inline; }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-btn .bi-sun { display: none; }
    :root:not([data-theme="light"]) .theme-btn .bi-moon-stars { display: inline; }
}

/* Chop etish */
@media print {
    .topbar, .toasts, .btn, .nav { display: none !important; }
    body { background: #fff; }
    .card { box-shadow: none; border-color: #ddd; break-inside: avoid; }
}