/* ==========================================================================
   CSS DESIGN SYSTEM FOR BLEISTIFT.APP
   Design V: Premium Slate Blackboard & Floating Glassmorphic Pill
   ========================================================================== */

/* ── ГЛОБАЛЬНЫЕ НАСТРОЙКИ & ТОКЕНЫ ── */
:root {
    --bg-slate: #0b2115; /* Глубокий темно-зеленый цвет доски */
    --wood-color: #5c3a21; /* Благородный ореховый цвет рамы */
    --chalk-white: #f4f3ef; /* Немецкий текст - белый мел */
    --chalk-cream: #e0d8c3; /* Русский текст - кремовый мел */
    --accent-orange: #ff7a00; /* Неоновое свечение солнца */
    --success-green: #00e676; /* Зеленое свечение правильного ответа */
    --error-pink: #ff1744; /* Розовое свечение ошибки */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #050b08;
    color: #ffffff;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Шрифтовые классы почерка */
.font-kalam {
    font-family: 'Kalam', cursive;
    font-weight: 400;
}

.font-caveat {
    font-family: 'Caveat', cursive;
    font-weight: 500;
}

/* ── ГЛАВНЫЙ КОНТЕЙНЕР (LANDSCAPE FIRST) ── */
.app-container {
    width: 100%;
    height: 100%;
    max-width: 1366px;
    max-height: 768px;
    display: flex;
    flex-direction: column;
    padding: 15px;
    padding-bottom: calc(15px + var(--safe-area-bottom));
    position: relative;
}

/* ── НАВИГАЦИОННЫЕ ВКЛАДКИ (Claude v1) ── */
.app-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
    z-index: 10;
}

.tab-link {
    padding: 5px 12px;
    border-radius: 8px;
    color: rgba(224,216,195,0.5);
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.tab-link:hover { color: var(--chalk-cream); background: var(--glass-bg); border-color: var(--glass-border); }
.tab-active { color: var(--chalk-white); background: var(--glass-bg); border-color: var(--glass-border); }

/* ── 1. ШАПКА ПРИЛОЖЕНИЯ ── */
.app-header {
    height: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    z-index: 10;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-title {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff, #888888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-sub {
    font-weight: 300;
    color: var(--accent-orange);
    -webkit-text-fill-color: initial;
}

.navigation-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Селекторы (Glassmorphic) */
.premium-select {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.premium-select:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.premium-select option {
    background-color: #0b1c12;
    color: #ffffff;
}

/* Переключатели режимов */
.mode-toggle-group {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    padding: 3px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.mode-btn {
    background: transparent;
    border: none;
    color: #888888;
    padding: 6px 14px;
    border-radius: 17px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.mode-btn.active {
    background: #ffffff;
    color: #0b2115;
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
}

/* ── 2. РАСКРЫВАЕМАЯ ВИДЕО-ТЕОРИЯ ── */
.theory-drawer {
    display: flex;
    flex-direction: column;
    background: rgba(11, 33, 21, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 10px;
    overflow: hidden;
    backdrop-filter: blur(15px);
    transition: max-height 0.5s ease-in-out, padding 0.3s;
    max-height: 40px;
    z-index: 9;
}

.theory-drawer:not(.collapsed) {
    max-height: 380px;
}

.theory-toggle-btn {
    background: transparent;
    border: none;
    color: #a5d6a7;
    width: 100%;
    height: 40px;
    padding: 0 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: var(--transition-smooth);
    outline: none;
}

.theory-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
}

.theory-toggle-btn .arrow-icon {
    display: inline-block;
    transition: transform 0.4s;
    font-size: 0.7rem;
}

.theory-drawer:not(.collapsed) .theory-toggle-btn .arrow-icon {
    transform: rotate(180deg);
}

.video-container {
    padding: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    height: 300px;
}

.video-container iframe {
    width: 100%;
    max-width: 600px;
    height: 100%;
    border-radius: 8px;
    border: none;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* ── 3. ГЛАВНАЯ ГРИФЕЛЬНАЯ ДОСКА ── */
.slate-board-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    perspective: 1000px;
}

.slate-wooden-frame {
    background: var(--wood-color);
    padding: 12px;
    border-radius: 16px;
    box-shadow: 
        inset 0 4px 6px rgba(255, 255, 255, 0.15),
        inset 0 -4px 6px rgba(0, 0, 0, 0.4),
        0 15px 35px rgba(0, 0, 0, 0.7);
    border: 3px solid #3d2413;
    width: 100%;
    height: 100%;
    display: flex;
}

.slate-board {
    flex: 1;
    background-color: var(--bg-slate);
    border-radius: 8px;
    border: 2px solid #07150e;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: inset 0 10px 30px rgba(0, 0, 0, 0.8);
}

/* Наложение реалистичной мелового шума */
.chalk-board-texture {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.06;
    background-image: 
        radial-gradient(circle at 30% 20%, #ffffff 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, #ffffff 0%, transparent 35%),
        linear-gradient(45deg, rgba(255, 255, 255, 0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255, 255, 255, 0.1) 25%, transparent 25%);
    background-size: 100% 100%, 100% 100%, 4px 4px, 4px 4px;
}

/* Две горизонтальные половины доски */
.board-half {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    z-index: 2;
}

.board-badge {
    position: absolute;
    top: 12px;
    left: 15px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 3px 8px;
    border-radius: 4px;
    opacity: 0.45;
}

.de-badge {
    background: #000000;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.ru-badge {
    background: #ffffff;
    color: #000000;
}

/* Меловой шрифт с мягким размытием */
.board-text {
    font-size: 3rem;
    text-align: center;
    line-height: 1.2;
    transition: var(--transition-smooth);
    letter-spacing: 0.5px;
}

.text-de {
    color: var(--chalk-white);
    text-shadow: 
        0 0 2px rgba(255, 255, 255, 0.4),
        0 0 4px rgba(255, 255, 255, 0.2),
        1px 2px 2px rgba(0, 0, 0, 0.6);
}

.text-ru {
    color: var(--chalk-cream);
    text-shadow: 
        0 0 2px rgba(224, 216, 195, 0.4),
        0 0 4px rgba(224, 216, 195, 0.2),
        1px 2px 2px rgba(0, 0, 0, 0.6);
}

.board-subtext {
    font-size: 1.8rem;
    color: rgba(244, 243, 239, 0.7);
    margin-top: 5px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    transition: var(--transition-smooth);
}

/* Эффект скрытия (Размытие текста внутри шторы) */
.text-blurred {
    filter: blur(12px);
    opacity: 0;
    transform: scale(0.95);
}

/* Разделительная линия с солнышком в центре */
.board-divider {
    height: 2px;
    width: calc(100% - 40px);
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.08);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.board-divider::before {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    border-top: 1px dashed rgba(255, 255, 255, 0.2);
}

.divider-dot {
    background: var(--bg-slate);
    padding: 0 10px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.2);
    z-index: 3;
}

/* ── 4. МАТОВАЯ ШТОРА (GLASSMORPHISM CURTAIN) ── */
.slate-curtain {
    position: absolute;
    left: 0;
    width: 100%;
    height: 50%;
    backdrop-filter: blur(22px) saturate(140%);
    background: rgba(11, 33, 21, 0.55);
    z-index: 5;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s;
    transform: translateY(0);
    opacity: 1;
    cursor: pointer;
}

.slate-curtain * {
    pointer-events: none;
}

.slate-curtain-de {
    top: 0;
    border-bottom: 2px dashed rgba(255, 255, 255, 0.15);
}

.slate-curtain-de.collapsed {
    transform: translateY(-101%);
    opacity: 0;
    pointer-events: none;
}

.slate-curtain-ru {
    top: 50%;
    border-top: 2px dashed rgba(255, 255, 255, 0.15);
}

.slate-curtain-ru.collapsed {
    transform: translateY(101%);
    opacity: 0;
    pointer-events: none;
}

.curtain-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.45);
    text-align: center;
}

.curtain-lock-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 4px 10px rgba(0,0,0,0.3));
    animation: pulseLock 2s infinite ease-in-out;
}

.curtain-prompt {
    font-size: 1.1rem;
    letter-spacing: 0.5px;
}

@keyframes pulseLock {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); color: rgba(255,255,255,0.7); }
    100% { transform: scale(1); }
}

/* ── 5. РЕЖИМ ПИСЬМЕННОГО ВВОДА ── */
.writing-area {
    margin-bottom: 20px;
    display: block;
    animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.writing-area.hidden {
    display: none;
}

.writing-card {
    background: rgba(11, 33, 21, 0.35);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px;
    backdrop-filter: blur(15px);
}

.writing-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: #a5d6a7;
    margin-bottom: 8px;
    display: block;
}

.writing-input-wrapper {
    display: flex;
    gap: 10px;
}

.premium-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 12px 16px;
    color: #ffffff;
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

.premium-input:focus {
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(0, 0, 0, 0.6);
}

.premium-submit-btn {
    background: #ffffff;
    color: #0b2115;
    border: none;
    padding: 0 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.premium-submit-btn:hover {
    background: #e0e0e0;
    transform: translateY(-1px);
}

/* Результаты дифференциального сравнения */
.comparison-result {
    display: flex;
    gap: 15px;
    margin-top: 12px;
    animation: fadeIn 0.3s;
}

.comparison-result.hidden {
    display: none;
}

.comp-box {
    flex: 1;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.comp-user {
    background: rgba(255, 23, 72, 0.08);
    border: 1px solid rgba(255, 23, 72, 0.2);
}

.comp-original {
    background: rgba(0, 230, 118, 0.08);
    border: 1px solid rgba(0, 230, 118, 0.2);
}

.comp-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.6;
}

.comp-text {
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* Свечение символов внутри diff */
.diff-del {
    color: #ff5252;
    text-decoration: line-through;
}

.diff-ins {
    color: #69f0ae;
    font-weight: 700;
}

/* ── 6. СТЕКЛЯННЫЙ ПУЛЬТ УПРАВЛЕНИЯ (GLASSMORPHIC PILL) ── */
.app-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    z-index: 10;
}

.control-pill-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
}

.control-pill {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(25px) saturate(120%);
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 6px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--glass-shadow);
    max-width: 90%;
    transition: var(--transition-smooth);
}

.control-pill:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Кнопки пульта */
.pill-btn {
    border: none;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    color: #ffffff;
}

/* Обычные кнопки навигации и избранного */
.fav-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.06);
    font-size: 0.7rem;
    font-weight: 700;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 24px;
}

.fav-btn:hover {
    background: rgba(255, 23, 72, 0.15);
    border-color: rgba(255, 23, 72, 0.3);
    color: #ff1744;
}

.nav-btn {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.08);
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: scale(1.05);
}

.nav-arrow {
    font-size: 1.2rem;
    font-weight: 600;
}

/* Быстрый переход ввода индекса */
.index-display-container {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    height: 48px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.5);
}

.index-input {
    background: transparent;
    border: none;
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    width: 68px;
    text-align: center;
    outline: none;
    letter-spacing: 0.5px;
}

/* Солнце (Центральный тумблер шторы) */
.solar-btn {
    width: 60px;
    height: 60px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.1);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.solar-icon {
    font-size: 1.6rem;
    transition: transform 0.6s ease-in-out;
}

/* Свечение активного солнца */
.solar-btn.active {
    background: radial-gradient(circle, #ffb300 0%, #ff6f00 100%);
    border-color: #ffd54f;
    box-shadow: 
        0 0 10px var(--accent-orange),
        0 0 22px var(--accent-orange),
        inset 0 2px 4px rgba(255, 255, 255, 0.4);
}

.solar-btn.active .solar-icon {
    transform: rotate(180deg);
    filter: drop-shadow(0 0 5px #ffffff);
}

.solar-btn:hover {
    transform: scale(1.08);
}

/* Кнопки самооценки (Выезжают/Появляются плавно) */
.score-btn {
    width: 48px;
    height: 48px;
    border-radius: 24px;
    font-size: 1.2rem;
    font-weight: 700;
    opacity: 1;
    transform: scale(1);
    visibility: visible;
    transition: var(--transition-smooth);
}

.score-correct {
    background: rgba(0, 230, 118, 0.1);
    border: 1.5px solid rgba(0, 230, 118, 0.3);
    color: var(--success-green);
}

.score-correct:hover {
    background: var(--success-green);
    color: #0b2115;
    box-shadow: 0 0 18px rgba(0, 230, 118, 0.5);
    transform: scale(1.1);
}

.score-wrong {
    background: rgba(255, 23, 72, 0.1);
    border: 1.5px solid rgba(255, 23, 72, 0.3);
    color: var(--error-pink);
}

.score-wrong:hover {
    background: var(--error-pink);
    color: #ffffff;
    box-shadow: 0 0 18px rgba(255, 23, 72, 0.5);
    transform: scale(1.1);
}

/* Неактивное состояние кнопок самооценки (шторы закрыты) */
.score-inactive {
    opacity: 0.22;
    pointer-events: none;
    filter: grayscale(1);
}

.score-inactive:hover {
    transform: none;
    box-shadow: none;
}

/* ── 7. DUOLINGO PROGRESS BAR ── */
.progress-bar-wrapper {
    width: 100%;
    max-width: 600px;
    padding: 0 10px;
}

.progress-dots {
    display: flex;
    justify-content: center;
    gap: 4px;
    width: 100%;
    height: 6px;
}

.progress-dot {
    flex: 1;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    transition: var(--transition-smooth);
}

.progress-dot.current {
    background: #ffffff;
    box-shadow: 0 0 8px #ffffff;
}

.progress-dot.correct {
    background: var(--success-green);
    box-shadow: 0 0 6px var(--success-green);
}

.progress-dot.wrong {
    background: var(--error-pink);
    box-shadow: 0 0 6px var(--error-pink);
}

/* ── АНИМАЦИИ ── */
@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ── КНОПКА ПЕРЕКЛЮЧЕНИЯ ТЕМЫ ── */
.theme-toggle-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 7px 13px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: var(--transition-smooth);
    color: var(--chalk-white);
    flex-shrink: 0;
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.08);
}

/* ── СВЕТЛАЯ ТЕМА: Design V1 ── */
[data-theme="light"] {
    --bg-slate:       #3d8b56;
    --wood-color:     rgba(180, 140, 80, 0.25);
    --chalk-white:    #ffffff;
    --chalk-cream:    #e8c840;
    --accent-orange:  #ff8c00;
    --success-green:  #22a85a;
    --error-pink:     #e8324a;
    --glass-bg:       rgba(255, 255, 255, 0.88);
    --glass-border:   rgba(0, 0, 0, 0.10);
    --glass-shadow:   0 8px 28px rgba(0, 0, 0, 0.13);
}

[data-theme="light"] body {
    background-color: #ebebeb;
    color: #222222;
}

/* Шапка */
[data-theme="light"] .logo-title {
    background: linear-gradient(135deg, #2a5e3a, #4a7a5a);
    -webkit-background-clip: text;
}

[data-theme="light"] .premium-select option {
    background-color: #ffffff;
    color: #222222;
}

[data-theme="light"] .mode-toggle-group {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.10);
}

[data-theme="light"] .mode-btn { color: #444444; font-weight: 500; }

[data-theme="light"] .mode-btn.active {
    background: #ffffff;
    color: #3d8b56;
    box-shadow: 0 2px 8px rgba(61, 139, 86, 0.2);
}

[data-theme="light"] .theme-toggle-btn {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.18);
    color: #333333;
}

[data-theme="light"] .premium-select {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.22);
    color: #222222;
    font-weight: 500;
}

/* Вкладки */
[data-theme="light"] .tab-link { color: #555555; }
[data-theme="light"] .tab-link:hover { color: #2a5e3a; background: rgba(61, 139, 86, 0.08); }
[data-theme="light"] .tab-active {
    color: #2a5e3a;
    background: rgba(61, 139, 86, 0.12);
    border-color: rgba(61, 139, 86, 0.30);
    font-weight: 600;
}

/* Видео-теория */
[data-theme="light"] .theory-drawer {
    background: rgba(255, 255, 255, 0.70);
    border-color: rgba(0, 0, 0, 0.10);
}

[data-theme="light"] .theory-toggle-btn { color: #3d8b56; }
[data-theme="light"] .theory-toggle-btn:hover { background: rgba(0, 0, 0, 0.04); color: #2a5e3a; }

/* Доска */
[data-theme="light"] .slate-wooden-frame {
    border-color: #b8884a;
    box-shadow:
        inset 0 3px 5px rgba(255, 255, 255, 0.4),
        inset 0 -3px 5px rgba(0, 0, 0, 0.2),
        0 12px 28px rgba(0, 0, 0, 0.18);
}

[data-theme="light"] .slate-board {
    border-color: #2d6e40;
    box-shadow: inset 0 6px 20px rgba(0, 0, 0, 0.25);
}

[data-theme="light"] .board-divider { background: rgba(255, 255, 255, 0.14); }
[data-theme="light"] .board-divider::before { border-color: rgba(255, 255, 255, 0.3); }
[data-theme="light"] .divider-dot { background: var(--bg-slate); color: rgba(255, 255, 255, 0.35); }

/* Штора (светлая версия) */
[data-theme="light"] .slate-curtain {
    background: rgba(45, 110, 64, 0.55);
    border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .curtain-content { color: rgba(255, 255, 255, 0.85); }

/* Режим письма */
[data-theme="light"] .writing-card {
    background: rgba(255, 255, 255, 0.75);
    border-color: rgba(0, 0, 0, 0.10);
}

[data-theme="light"] .writing-label { color: #3d8b56; }

[data-theme="light"] .premium-input {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(0, 0, 0, 0.15);
    color: #222222;
}

[data-theme="light"] .premium-input:focus {
    border-color: #3d8b56;
    background: #ffffff;
}

[data-theme="light"] .premium-submit-btn {
    background: #3d8b56;
    color: #ffffff;
}

[data-theme="light"] .premium-submit-btn:hover { background: #2d6e40; }

/* Пульт управления */
[data-theme="light"] .control-pill {
    background: rgba(255, 255, 255, 0.93);
    border-color: rgba(0, 0, 0, 0.09);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.11);
}

[data-theme="light"] .control-pill:hover { background: rgba(255, 255, 255, 0.98); }

[data-theme="light"] .pill-btn { color: #333333; }

[data-theme="light"] .fav-btn {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
    color: #555555;
}

[data-theme="light"] .fav-btn:hover { background: rgba(232, 50, 74, 0.10); }

[data-theme="light"] .nav-btn { background: rgba(0, 0, 0, 0.06); color: #333333; }
[data-theme="light"] .nav-btn:hover { background: rgba(0, 0, 0, 0.12); }

[data-theme="light"] .index-display-container {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.12);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .index-input { color: #333333; }

[data-theme="light"] .solar-btn {
    background: rgba(0, 0, 0, 0.06);
    border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .score-correct {
    background: rgba(34, 168, 90, 0.10);
    border-color: rgba(34, 168, 90, 0.30);
    color: var(--success-green);
}

[data-theme="light"] .score-correct:hover {
    background: var(--success-green);
    color: #ffffff;
}

[data-theme="light"] .score-wrong {
    background: rgba(232, 50, 74, 0.10);
    border-color: rgba(232, 50, 74, 0.30);
    color: var(--error-pink);
}

[data-theme="light"] .score-wrong:hover {
    background: var(--error-pink);
    color: #ffffff;
}

/* Прогресс-бар */
[data-theme="light"] .progress-dot { background: rgba(0, 0, 0, 0.10); }
[data-theme="light"] .progress-dot.current { background: #3d8b56; box-shadow: 0 0 8px rgba(61, 139, 86, 0.5); }
[data-theme="light"] .progress-dot.correct { background: var(--success-green); }
[data-theme="light"] .progress-dot.wrong { background: var(--error-pink); }

/* ── МОДАЛЬНЫЕ ОКНА (ОБЩИЕ СТИЛИ) ── */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.8); z-index: 200;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(8px);
    opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal-box {
    background: #0e2a1a; border: 1px solid var(--glass-border); border-radius: 16px;
    padding: 22px 24px; width: 100%; max-width: 440px; box-shadow: 0 24px 64px rgba(0,0,0,0.7);
    transform: scale(0.95); transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-overlay.open .modal-box { transform: scale(1); }

.modal-title { font-family: 'Kalam', cursive; font-size: 20px; color: var(--chalk-white); }
.modal-cancel { padding: 8px 18px; border-radius: 8px; border: 1px solid var(--glass-border); background: transparent; color: var(--chalk-dim); cursor: pointer; transition: var(--transition-smooth); }
.modal-cancel:hover { background: rgba(255,255,255,0.08); color: #fff; }

/* ── СВЕТЛАЯ ТЕМА: КОРРЕКТИРОВКА КОНТРАСТА ── */
[data-theme="light"] .tab-link { color: #2d5a3d; opacity: 0.6; }
[data-theme="light"] .tab-link:hover { color: #22a85a; opacity: 1; }
[data-theme="light"] .tab-active { color: #ffffff !important; background: #3d8b56; border-color: #2d6e40; opacity: 1; }
[data-theme="light"] .logo-title { background: linear-gradient(135deg, #1b5e20, #2e7d32); -webkit-background-clip: text; }
[data-theme="light"] .modal-box { background: #ffffff; color: #222222; border-color: rgba(0,0,0,0.12); }
[data-theme="light"] .modal-title { color: #222222; }
[data-theme="light"] .modal-cancel { border-color: rgba(0,0,0,0.15); color: #555555; }
[data-theme="light"] .modal-cancel:hover { background: rgba(0,0,0,0.05); color: #222222; }

/* ── РЕЖИМ СМАРТФОНА (ПОРТРЕТНЫЙ РЕЖИМ) / АДАПТИВНОСТЬ ── */
@media (max-width: 768px) {
    /* Если экран перевернут в портрет */
    @media (orientation: portrait) {
        .app-container {
            padding: 10px;
        }
        .app-header {
            flex-direction: column;
            height: auto;
            gap: 10px;
            margin-bottom: 15px;
        }
        .navigation-controls {
            width: 100%;
            justify-content: space-between;
        }
        .board-text {
            font-size: 2.2rem;
        }
        .board-subtext {
            font-size: 1.3rem;
        }
        .control-pill {
            max-width: 100%;
            gap: 4px;
        }
        .fav-btn, .nav-btn, .score-btn {
            width: 42px;
            height: 42px;
        }
        .solar-btn {
            width: 52px;
            height: 52px;
        }
        .index-display-container {
            height: 42px;
        }
        .index-input {
            width: 50px;
            font-size: 0.75rem;
        }
        .theory-drawer.expanded {
            max-height: 250px;
        }
        .video-container {
            height: 200px;
        }
    }
}