/* ══════════════════════════════════════════════════════════════════
   Calanggo — Theme System
   Dark is the CSS baseline (all other CSS files stay untouched).
   Light mode applied via html[data-theme="light"]. theme.js sets
   data-theme on <html> before first paint to prevent flash.
   This file must be loaded LAST so its overrides win specificity ties.
   ══════════════════════════════════════════════════════════════════ */

/* ── Smooth transition when user toggles ───────────────────────── */
html.theme-switching *,
html.theme-switching *::before,
html.theme-switching *::after {
    transition:
        background-color 0.35s ease,
        background       0.35s ease,
        color            0.26s ease,
        border-color     0.26s ease,
        box-shadow       0.26s ease !important;
}

/* ══ LIGHT THEME — CSS VARIABLE OVERRIDES ════════════════════════
   These cover everything that uses var(--*) tokens throughout the
   codebase. Hardcoded-color overrides follow below.
   ═════════════════════════════════════════════════════════════════ */
[data-theme="light"] {
    /* Core backgrounds */
    --bg:            #f0f4f8;
    --card-bg:       #ffffff;
    --surface:       #f8fafc;
    --surface-2:     #eef2f8;

    /* Text */
    --text:          #0f172a;
    --text-main:     #0f172a;   /* used by dashboard.css / landing.css */
    --text-dim:      #475569;
    --text-muted:    #94a3b8;

    /* Borders */
    --border:        rgba(0,0,0,0.07);
    --border-md:     rgba(0,0,0,0.13);

    /* Primary (slightly darker for contrast on white) */
    --primary:       #7c3aed;
    --primary-d:     #6d28d9;
    --primary-light: #8b5cf6;
    --secondary:     #2563eb;

    /* Inputs */
    --input-bg:      #ffffff;
    --input-border:  rgba(0,0,0,0.14);

    /* Topbar / nav */
    --topbar-bg:     rgba(255,255,255,0.97);
    --topbar-border: rgba(0,0,0,0.07);
    --navbar-bg:     rgba(248,250,252,0.93);

    /* Shadows */
    --shadow-sm:     0 1px 6px rgba(0,0,0,.06);
    --shadow:        0 4px 20px rgba(0,0,0,.08);
    --shadow-lg:     0 10px 40px rgba(0,0,0,.12);

    /* Misc */
    --glass:         rgba(0,0,0,0.02);
    --glass-md:      rgba(0,0,0,0.04);
    --selection-bg:  rgba(124,58,237,0.14);
}

/* ══ NATIVE FORM CONTROLS — color-scheme hint ════════════════════
   Tells the browser to render native dropdowns/inputs in the correct
   OS-level color scheme. Dark is the CSS baseline, so we set dark
   globally and flip to light when the theme changes.
   ════════════════════════════════════════════════════════════════ */
select,
input[type="date"],
input[type="time"],
input[type="number"] {
    color-scheme: dark;
}
[data-theme="light"] select,
[data-theme="light"] input[type="date"],
[data-theme="light"] input[type="time"],
[data-theme="light"] input[type="number"] {
    color-scheme: light;
}

/* ══ BASE ════════════════════════════════════════════════════════ */
[data-theme="light"] body {
    background: #f0f4f8;
    color: #0f172a;
}

/* ══ APP TOPBAR ══════════════════════════════════════════════════ */
[data-theme="light"] .topbar {
    background: rgba(255,255,255,0.97);
    border-bottom-color: rgba(0,0,0,0.07);
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}
[data-theme="light"] .topbar-logo { color: #0f172a; }
[data-theme="light"] .topbar-hamburger { color: #475569; }
[data-theme="light"] .topbar-hamburger:hover { background: rgba(0,0,0,0.06); }

[data-theme="light"] .topbar-nav a { color: #475569; }
[data-theme="light"] .topbar-nav a:hover {
    background: rgba(0,0,0,0.05);
    color: #7c3aed;
}
[data-theme="light"] .topbar-nav a.active {
    background: rgba(124,58,237,0.09);
    color: #7c3aed;
}

[data-theme="light"] .topbar-icon-btn { color: #475569; }
[data-theme="light"] .topbar-icon-btn:hover {
    background: rgba(0,0,0,0.06);
    color: #0f172a;
}

[data-theme="light"] .topbar-badge-lang {
    background: rgba(124,58,237,0.10);
    border-color: rgba(124,58,237,0.22);
    color: #7c3aed;
}
[data-theme="light"] .topbar-badge-streak {
    background: rgba(234,88,12,0.10);
    border-color: rgba(234,88,12,0.22);
}
[data-theme="light"] .topbar-badge-today {
    background: rgba(16,185,129,0.09);
    border-color: rgba(16,185,129,0.22);
}

[data-theme="light"] .topbar-create-btn {
    background: #7c3aed;
    color: #fff;
}
[data-theme="light"] .topbar-create-btn:hover { background: #6d28d9; }

[data-theme="light"] .topbar-avatar-btn {
    background: linear-gradient(135deg,#7c3aed,#6d28d9);
    border-color: rgba(124,58,237,0.35);
    color: #fff;
}

/* User dropdown */
[data-theme="light"] .topbar-user-dropdown {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 8px 28px rgba(0,0,0,0.12);
}
[data-theme="light"] .tud-header     { border-bottom-color: rgba(0,0,0,0.07); }
[data-theme="light"] .tud-name       { color: #0f172a; }
[data-theme="light"] .tud-sub        { color: #64748b; }
[data-theme="light"] .tud-sep        { border-color: rgba(0,0,0,0.07); }
[data-theme="light"] .tud-item       { color: #475569; }
[data-theme="light"] .tud-item:hover { background: rgba(0,0,0,0.04); color: #0f172a; }
[data-theme="light"] .tud-item.tud-danger       { color: #dc2626; }
[data-theme="light"] .tud-item.tud-danger:hover { background: rgba(239,68,68,0.07); }

[data-theme="light"] .topbar-right-sep { background: rgba(0,0,0,0.12); }

/* Topbar player buttons */
[data-theme="light"] .topbar-player-btn {
    background: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.12);
    color: rgba(0,0,0,0.7);
}
[data-theme="light"] .topbar-player-btn:hover,
[data-theme="light"] .topbar-player-btn.open {
    background: rgba(0,0,0,0.10);
    color: #0f172a;
}

/* ══ MAIN CONTENT ════════════════════════════════════════════════ */
[data-theme="light"] .main-content { background: #f0f4f8; }

/* ══ NOTIFICATION PANEL ═════════════════════════════════════════ */
[data-theme="light"] .notif-panel {
    background: #ffffff;
    border-left-color: rgba(0,0,0,0.08);
    box-shadow: -4px 0 24px rgba(0,0,0,0.08);
}
[data-theme="light"] .notif-panel-header {
    background: #ffffff;
    border-bottom-color: rgba(0,0,0,0.07);
    color: #0f172a;
}
[data-theme="light"] .notif-item {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.07);
    color: #475569;
}
[data-theme="light"] .notif-item:hover { background: #f0f4f8; }

/* ══ GENERIC CARDS / PANELS ══════════════════════════════════════ */
[data-theme="light"] .card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.08);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
[data-theme="light"] .card:hover {
    border-color: rgba(124,58,237,0.22);
    box-shadow: 0 8px 28px rgba(124,58,237,0.10);
}
[data-theme="light"] .stat-card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.08);
}

[data-theme="light"] .toolbar {
    background: #ffffff;
    border-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .tab-btn        { color: #64748b; }
[data-theme="light"] .tab-btn.active { color: #7c3aed; }

/* ══ FORM INPUTS ════════════════════════════════════════════════ */
[data-theme="light"] .search-bar input,
[data-theme="light"] .filter-group select {
    background: #ffffff;
    border-color: rgba(0,0,0,0.12);
    color: #0f172a;
}
[data-theme="light"] .search-bar input:focus,
[data-theme="light"] .filter-group select:focus {
    background: #ffffff;
    border-color: #7c3aed;
}

[data-theme="light"] .chip {
    background: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.12);
    color: #475569;
}
[data-theme="light"] .chip:hover {
    border-color: #7c3aed;
    background: rgba(124,58,237,0.09);
}

[data-theme="light"] .dropdown-content {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 8px 24px rgba(0,0,0,0.10);
}
[data-theme="light"] .dropdown-content a,
[data-theme="light"] .dropdown-content button { color: #475569; }
[data-theme="light"] .dropdown-content a:hover,
[data-theme="light"] .dropdown-content button:hover {
    background: rgba(0,0,0,0.04);
    color: #0f172a;
}

/* Lesson card thumbnail overlay */
[data-theme="light"] .card-info   { background: rgba(0,0,0,0.60); }
[data-theme="light"] .card-footer { background: rgba(0,0,0,0.55); }

/* Skeleton loading */
[data-theme="light"] .card-skeleton {
    background: linear-gradient(90deg, #f0f4f8 25%, #e4eaf2 50%, #f0f4f8 75%);
    background-size: 400% 100%;
}

/* ══ HOME PAGE ══════════════════════════════════════════════════ */
[data-theme="light"] .home-chips-sticky {
    background: #f0f4f8;
    border-bottom-color: rgba(0,0,0,0.07);
}
[data-theme="light"] .home-chip {
    background: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.12);
    color: #475569;
}
[data-theme="light"] .home-chip:hover {
    background: rgba(0,0,0,0.09);
    border-color: rgba(0,0,0,0.20);
    color: #0f172a;
}
[data-theme="light"] .home-chip.active {
    background: #0f172a;
    border-color: #0f172a;
    color: #ffffff;
}
[data-theme="light"] .chips-nav-left {
    background: linear-gradient(to right, #f0f4f8 55%, transparent 100%);
}
[data-theme="light"] .chips-nav-right {
    background: linear-gradient(to left, #f0f4f8 55%, transparent 100%);
}
[data-theme="light"] .home-chips-nav-btn {
    background: rgba(0,0,0,0.08);
    border-color: rgba(0,0,0,0.15);
    color: #475569;
}
[data-theme="light"] .home-chips-nav-btn:hover { background: rgba(0,0,0,0.14); }

[data-theme="light"] .home-section-title { color: #0f172a; }
[data-theme="light"] .home-section-empty {
    background: rgba(0,0,0,0.03);
    border-color: rgba(0,0,0,0.08);
    color: #64748b;
}

/* Home cards */
[data-theme="light"] .h-card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .h-card:hover {
    border-color: rgba(124,58,237,0.22);
    box-shadow: 0 8px 28px rgba(124,58,237,0.09);
}
[data-theme="light"] .h-card-title  { color: #0f172a; }
[data-theme="light"] .h-card-meta   { color: #64748b; }
[data-theme="light"] .h-card-tip-row {
    background: rgba(0,0,0,0.04);
    border-top-color: rgba(0,0,0,0.07);
    color: #64748b;
}
[data-theme="light"] .h-card-act-btn {
    background: rgba(0,0,0,0.07);
    border-color: rgba(0,0,0,0.13);
    color: #0f172a;
}
[data-theme="light"] .h-card-act-btn:hover { background: rgba(0,0,0,0.14); }
[data-theme="light"] .h-card-act-btn.h-card-act-danger {
    background: rgba(239,68,68,0.10);
    border-color: rgba(239,68,68,0.25);
    color: #dc2626;
}

[data-theme="light"] .h-section-continue { background: #f8fafc; }
[data-theme="light"] .h-section-empty-bg { background: #f8fafc; border-color: rgba(0,0,0,0.07); }
[data-theme="light"] .h-progress-label   { color: #64748b; }

/* Inline overlay gradients in home */
[data-theme="light"] .home-continue-overlay {
    background: linear-gradient(to right, #f8fafc 38%, transparent);
}
[data-theme="light"] .home-continue-overlay-r {
    background: linear-gradient(to left, #f8fafc 38%, transparent);
}

/* ══ DASHBOARD PAGE ═════════════════════════════════════════════ */
/* Most handled by generic .card + variable tokens above.
   The lesson card thumbnails keep their dark overlays (correct). */
[data-theme="light"] .lesson-section-header { color: #0f172a; }
[data-theme="light"] .lesson-card { background: #ffffff; border-color: rgba(0,0,0,0.08); }
[data-theme="light"] .lesson-card:hover {
    border-color: rgba(124,58,237,0.22);
    box-shadow: 0 8px 28px rgba(124,58,237,0.10);
}

/* ══ PROFILE PAGE ════════════════════════════════════════════════ */
/* Section cards / hero already use --card-bg / --border tokens — covered. */

/* Profile form inputs */
[data-theme="light"] .pf-select,
[data-theme="light"] .pf-input {
    background: #ffffff;
    border-color: rgba(0,0,0,0.14);
    color: #0f172a;
}
[data-theme="light"] .pf-sel-trigger,
[data-theme="light"] .clg-sel-trigger {
    background: #ffffff;
    border-color: rgba(0,0,0,0.14);
    color: #0f172a;
}
[data-theme="light"] .pf-sel-drop,
[data-theme="light"] .clg-sel-drop {
    background: #ffffff;
    border-color: rgba(0,0,0,0.12);
    box-shadow: 0 8px 24px rgba(0,0,0,.12);
    scrollbar-color: rgba(124,58,237,.3) transparent;
}
[data-theme="light"] .pf-sel-drop::-webkit-scrollbar-thumb,
[data-theme="light"] .clg-sel-drop::-webkit-scrollbar-thumb { background: rgba(124,58,237,.3); }
[data-theme="light"] .pf-sel-opt,
[data-theme="light"] .clg-sel-opt       { color: #475569; }
[data-theme="light"] .pf-sel-opt:hover,
[data-theme="light"] .clg-sel-opt:hover { background: rgba(124,58,237,.07); color: #0f172a; }
[data-theme="light"] .pf-sel-opt.selected,
[data-theme="light"] .clg-sel-opt.selected { background: rgba(124,58,237,.10); color: #7c3aed; }
[data-theme="light"] .pf-select:focus,
[data-theme="light"] .pf-input:focus {
    background: #ffffff;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.10);
}
[data-theme="light"] .pf-ai-input {
    background: #ffffff;
    border-color: rgba(0,0,0,0.14);
    color: #0f172a;
}
[data-theme="light"] .pf-ai-input:focus {
    background: #ffffff;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124,58,237,0.10);
}
[data-theme="light"] .pf-ai-input::placeholder { color: #94a3b8; }

/* Language pill + segmented control */
[data-theme="light"] .pf-lang-inner {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.10);
    color: #475569;
}
[data-theme="light"] .pf-lang-item:hover .pf-lang-inner {
    border-color: rgba(124,58,237,0.38);
    background: rgba(124,58,237,0.07);
    color: #0f172a;
}
[data-theme="light"] .pf-lang-item input:checked ~ .pf-lang-inner {
    background: rgba(124,58,237,0.10);
    border-color: #7c3aed;
    color: #7c3aed;
}
[data-theme="light"] .pf-seg-inner {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.11);
    color: #475569;
}
[data-theme="light"] .pf-seg-opt:hover .pf-seg-inner {
    background: rgba(124,58,237,0.07);
    border-color: rgba(124,58,237,0.35);
    color: #0f172a;
}

/* CEFR cards */
[data-theme="light"] .prof-cefr-card {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.09);
}

/* Reputation / XP bars background */
[data-theme="light"] .prof-rep-bar-wrap,
[data-theme="light"] .prof-xp-bar-wrap { background: rgba(0,0,0,0.08); }

/* Badge tiles */
[data-theme="light"] .prof-badge {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.09);
}
[data-theme="light"] .prof-badge:hover {
    background: rgba(124,58,237,0.07);
    border-color: rgba(124,58,237,0.28);
}

/* Alarm cards */
[data-theme="light"] .sa-card {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.09);
}
[data-theme="light"] .sa-card.sa-running { border-color: rgba(124,58,237,0.35); }
[data-theme="light"] .sa-card-name { color: #0f172a; }
[data-theme="light"] .sa-card-meta { color: #64748b; }

/* Alarm cards */
[data-theme="light"] .sa-card {
    background: #f8fafc;
    border-color: rgba(0,0,0,0.09);
}
[data-theme="light"] .sa-card.sa-running { border-color: rgba(124,58,237,0.35); }
[data-theme="light"] .sa-label  { color: #0f172a; }
[data-theme="light"] .sa-meta   { color: #64748b; }

/* Modal boxes */
[data-theme="light"] .sa-modal-box,
[data-theme="light"] .modal-box {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
}

/* ══ COMPONENTS: OVERLAY MODALS ══════════════════════════════════ */
[data-theme="light"] .reinforcement-card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 16px 48px rgba(0,0,0,0.14);
}
[data-theme="light"] .card-header {
    background: #f8fafc;
    border-bottom-color: rgba(0,0,0,0.08);
}
[data-theme="light"] .card-header .word-title { color: #0f172a; }
[data-theme="light"] .btn-close-card          { color: #64748b; }
[data-theme="light"] .card-footer {
    background: #f8fafc;
    border-top-color: rgba(0,0,0,0.08);
}

/* Channel sub modal */
[data-theme="light"] .channel-sub-modal-box {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 16px 48px rgba(0,0,0,0.12);
}

/* ══ STUDY TIMER BAR ════════════════════════════════════════════ */
[data-theme="light"] #study-timer-bar {
    background: #ffffff;
    border-color: rgba(0,0,0,0.12);
    box-shadow: 0 4px 20px rgba(0,0,0,0.11);
    color: #0f172a;
}
[data-theme="light"] .stb-label     { color: #0f172a; }
[data-theme="light"] .stb-countdown { color: #7c3aed; }
[data-theme="light"] .stb-progress-track { background: rgba(0,0,0,0.08); }
[data-theme="light"] .stb-min-btn { color: #64748b; }
[data-theme="light"] .stb-min-btn:hover { color: #0f172a; background: rgba(0,0,0,0.06); }

/* Toast */
[data-theme="light"] #study-alarm-toast {
    background: #ffffff;
    border-color: rgba(0,0,0,0.10);
    box-shadow: 0 8px 28px rgba(0,0,0,0.12);
    color: #0f172a;
}
[data-theme="light"] .sat-name { color: #0f172a; }
[data-theme="light"] .sat-dur  { color: #64748b; }

/* ══ AUTH LAYOUT ════════════════════════════════════════════════ */
[data-theme="light"] .auth-left {
    background: linear-gradient(135deg, #ede9fe 0%, #ddd6fe 50%, #ede9fe 100%);
}
[data-theme="light"] .auth-left-tagline { color: #1e1b4b; }
[data-theme="light"] .auth-features li  { color: #4338ca; }
[data-theme="light"] .auth-right        { background: #f8fafc; }
[data-theme="light"] .auth-title        { color: #0f172a; }
[data-theme="light"] .auth-subtitle     { color: #475569; }

[data-theme="light"] input[type="text"],
[data-theme="light"] input[type="email"],
[data-theme="light"] input[type="password"] {
    background: #ffffff;
    border-color: rgba(0,0,0,0.14);
    color: #0f172a;
}
[data-theme="light"] input[type="text"]:focus,
[data-theme="light"] input[type="email"]:focus,
[data-theme="light"] input[type="password"]:focus {
    background: #ffffff;
    border-color: #7c3aed;
}
[data-theme="light"] label   { color: #475569; }
[data-theme="light"] .divider { border-top-color: rgba(0,0,0,0.10); }

/* ══ LANDING PAGE ═══════════════════════════════════════════════ */
[data-theme="light"] body.landing-page { background: #f8fafc; color: #0f172a; }

[data-theme="light"] body.landing-page nav {
    background: rgba(248,250,252,0.93);
    border-bottom-color: rgba(0,0,0,0.07);
}
[data-theme="light"] body.landing-page .btn-ghost {
    color: #475569;
    border-color: rgba(0,0,0,0.15);
    background: transparent;
}
[data-theme="light"] body.landing-page .btn-ghost:hover {
    background: rgba(0,0,0,0.05);
    color: #0f172a;
}
[data-theme="light"] body.landing-page .hero h1   { color: #0f172a; }
[data-theme="light"] body.landing-page .hero p    { color: #475569; }
[data-theme="light"] body.landing-page .hero-badge {
    background: rgba(124,58,237,0.08);
    border-color: rgba(124,58,237,0.18);
    color: #7c3aed;
}
[data-theme="light"] body.landing-page .hero-url-box {
    background: rgba(0,0,0,0.04);
    border-color: rgba(0,0,0,0.12);
}
[data-theme="light"] body.landing-page .hero-url-box input {
    background: transparent;
    color: #0f172a;
    border-color: transparent;
}
[data-theme="light"] body.landing-page .hero-url-box input::placeholder { color: #94a3b8; }

/* Landing sections */
[data-theme="light"] body.landing-page section { background: #f8fafc; color: #0f172a; }
[data-theme="light"] body.landing-page .features-section,
[data-theme="light"] body.landing-page .how-section   { background: #f0f4f8; }
[data-theme="light"] body.landing-page .section-title { color: #0f172a; }
[data-theme="light"] body.landing-page .section-sub   { color: #475569; }

[data-theme="light"] body.landing-page .feature-card {
    background: #ffffff;
    border-color: rgba(0,0,0,0.07);
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}
[data-theme="light"] body.landing-page .feature-title { color: #0f172a; }
[data-theme="light"] body.landing-page .feature-desc  { color: #475569; }

[data-theme="light"] body.landing-page footer {
    background: #0f172a;
    color: rgba(255,255,255,0.7);
}

/* ══ THEME TOGGLE BUTTON ════════════════════════════════════════ */
.clg-theme-btn .th-icon-light { display: none; }

[data-theme="light"] .clg-theme-btn .th-icon-dark  { display: none; }
[data-theme="light"] .clg-theme-btn .th-icon-light { display: inline; }

/* ══ LANDING INTRO HINT ═════════════════════════════════════════ */
#theme-intro-hint {
    display: none;
    position: fixed;
    bottom: 28px;
    right: 28px;
    background: #ffffff;
    color: #475569;
    border: 1px solid rgba(0,0,0,0.09);
    border-radius: 14px;
    padding: 12px 18px;
    font-size: .84rem;
    font-weight: 500;
    box-shadow: 0 8px 28px rgba(0,0,0,0.10);
    gap: 10px;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    font-family: inherit;
}
#theme-intro-hint i { color: #7c3aed; font-size: 1rem; }
#theme-intro-hint button {
    background: #0f172a;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    padding: 5px 12px;
    font-size: .82rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    margin-left: 4px;
    transition: background 0.2s;
}
#theme-intro-hint button:hover { background: #1e293b; }