/* ==========================================================================
   Shrift - Navy & Orange CSS Stylesheet
   ========================================================================== */

/* Переменные цветовой схемы */
:root {
    --bg-color: #0b1222;
    --panel-bg: rgba(19, 28, 51, 0.78);
    --panel-solid: #131c33;
    --panel-border: rgba(160, 182, 255, 0.14);
    --panel-shadow: rgba(0, 0, 0, 0.5);
    --header-bg: rgba(11, 18, 34, 0.88);
    --field-bg: rgba(0, 0, 0, 0.22);
    --overlay-bg: rgba(8, 13, 28, 0.82);
    --tint: 255, 255, 255;          /* оттенок полупрозрачных подложек: белый на тёмном, тёмно-синий на светлом */

    --text-primary: #e9eefb;
    --text-secondary: #98a5c4;
    --text-muted: #6f7c9c;
    --text-on-accent: #ffffff;

    --accent-primary: #dc5524;
    --accent-hover: #e86a3a;
    --accent-rgb: 220, 85, 36;
    --accent-glow: rgba(220, 85, 36, 0.4);
    --accent-text: #ff9a6e;         /* акцент для текста и тонких линий на тёмном фоне */

    --neon-blue: var(--accent-primary);
    --neon-cyan: var(--accent-text);
    --neon-violet: #ff8a5c;
    --neon-green: #46c08a;
    --neon-red: #ff5a4d;

    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;

    --transition-speed: 0.25s;
    color-scheme: dark;
}

/* Светлая тема: те же названия, другие значения */
:root[data-theme="light"] {
    --bg-color: #f1f5fd;
    --panel-bg: rgba(255, 255, 255, 0.86);
    --panel-solid: #ffffff;
    --panel-border: rgba(30, 50, 110, 0.14);
    --panel-shadow: rgba(30, 50, 110, 0.18);
    --header-bg: rgba(255, 255, 255, 0.9);
    --field-bg: rgba(30, 50, 110, 0.06);
    --overlay-bg: rgba(241, 245, 253, 0.85);
    --tint: 20, 32, 58;

    --text-primary: #14203a;
    --text-secondary: #556487;
    --text-muted: #7a87a6;

    --accent-hover: #c94a1b;
    --accent-text: #b9441a;
    --neon-violet: #f08a5a;
    --neon-green: #1c8a5c;
    --neon-red: #d93a30;
    color-scheme: light;
}

/* Сброс стилей и общие настройки */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Onest', 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
    position: relative;
}

/* Неоновые фоновые сферы */
.glow-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.2;
    mix-blend-mode: screen;
}

.blob-purple {
    top: -10%;
    right: 10%;
    width: 500px;
    height: 500px;
    background-color: var(--neon-violet);
}

.blob-cyan {
    bottom: -10%;
    left: 10%;
    width: 600px;
    height: 600px;
    background-color: var(--neon-cyan);
}

.blob-blue {
    top: 40%;
    left: 45%;
    width: 400px;
    height: 400px;
    background-color: var(--neon-blue);
}

/* Макет приложения */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    position: relative;
    z-index: 1;
}

/* Шапка приложения */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--panel-border);
    backdrop-filter: blur(10px);
}

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

.logo .icon {
    font-size: 28px;
}

.logo-text h1 {
    font-family: 'Unbounded', 'Onest', sans-serif;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-text) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text .subtitle {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Главный интерфейс */
.app-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    padding: 16px;
    gap: 16px;
}

/* Панели Glassmorphism */
.glass-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px var(--panel-shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: border-color var(--transition-speed);
}

.glass-panel:hover {
    border-color: rgba(var(--tint), 0.12);
}

/* Боковая панель настроек */
.settings-sidebar {
    width: 380px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Заголовки вкладок */
.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--panel-border);
    background: var(--field-bg);
}

.tab-btn {
    flex: 1;
    padding: 14px 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(var(--tint), 0.02);
}

.tab-btn.active {
    color: var(--neon-cyan);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-cyan));
    box-shadow: 0 0 8px var(--neon-cyan);
}

/* Содержимое вкладок */
.tabs-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

/* Стилизация скроллбара */
.tabs-content::-webkit-scrollbar,
.preview-viewport::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.tabs-content::-webkit-scrollbar-track,
.preview-viewport::-webkit-scrollbar-track {
    background: transparent;
}

.tabs-content::-webkit-scrollbar-thumb,
.preview-viewport::-webkit-scrollbar-thumb {
    background: rgba(var(--tint), 0.1);
    border-radius: 3px;
}

.tabs-content::-webkit-scrollbar-thumb:hover,
.preview-viewport::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--tint), 0.2);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.tab-title {
    font-family: 'Onest', 'Inter', sans-serif;
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-left: 3px solid var(--neon-cyan);
    padding-left: 8px;
}

/* Карточка статусов загрузки */
.status-card {
    background: var(--field-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    margin-bottom: 20px;
}

.status-card h4 {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-size: 13px;
}

.status-item:last-child {
    margin-bottom: 0;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-indicator.red {
    background-color: var(--neon-red);
    box-shadow: 0 0 6px var(--neon-red);
}

.status-indicator.green {
    background-color: var(--neon-green);
    box-shadow: 0 0 6px var(--neon-green);
}

.status-text {
    color: var(--text-primary);
}

/* Загрузчики файлов */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.upload-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 10px;
    border: 2px dashed rgba(var(--tint), 0.15);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    text-align: center;
    background: rgba(var(--tint), 0.01);
}

.upload-box:hover {
    border-color: var(--neon-cyan);
    background: rgba(var(--accent-rgb), 0.02);
}

.upload-icon {
    font-size: 26px;
    margin-bottom: 8px;
}

.upload-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.upload-desc {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Группы настроек */
.settings-group {
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius-md);
    padding: 16px;
    margin-bottom: 16px;
    background: rgba(var(--tint), 0.01);
}

.group-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(var(--tint), 0.05);
    padding-bottom: 6px;
}

/* Элементы управления формой */
.control-row {
    display: flex;
    gap: 12px;
}

.double-input {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.field-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.field-control label {
    font-size: 11px;
    color: var(--text-secondary);
}

.neon-input, .neon-select {
    width: 100%;
    background: var(--field-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 13px;
    transition: all var(--transition-speed);
    outline: none;
    font-family: 'Onest', 'Inter', sans-serif;
}

.neon-input:focus, .neon-select:focus {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.2);
}

.neon-select option {
    background-color: var(--panel-solid);
    color: var(--text-primary);
}

/* Настройки цветов */
.color-control {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    font-size: 12px;
    color: var(--text-secondary);
}

.color-control input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    outline: none;
    background: transparent;
}

.color-control input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-control input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--panel-border);
    border-radius: 50%;
}

/* Ссылки-кнопки быстрого выбора */
.preset-links {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.link-btn {
    background: transparent;
    border: none;
    color: var(--neon-blue);
    font-size: 11px;
    cursor: pointer;
    text-decoration: underline;
    transition: color var(--transition-speed);
}

.link-btn:hover {
    color: var(--neon-cyan);
}

/* Ползунки (range) */
.slider-control {
    margin-bottom: 14px;
}

.slider-control:last-child {
    margin-bottom: 0;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.slider-value {
    color: var(--neon-cyan);
    font-family: 'Fira Code', monospace;
    font-weight: 500;
}

/* Стилизация ползунка */
.neon-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: rgba(var(--tint), 0.1);
    outline: none;
    transition: background var(--transition-speed);
}

.neon-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--text-primary);
    border: 2px solid var(--neon-cyan);
    cursor: pointer;
    box-shadow: 0 0 10px var(--neon-cyan);
    transition: transform 0.1s ease;
}

.neon-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Группа чекбоксов */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkbox-group span {
    font-size: 12px;
    color: var(--text-secondary);
}

.checkbox-control {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    cursor: pointer;
    color: var(--text-primary);
}

.checkbox-control input[type="checkbox"] {
    accent-color: var(--neon-cyan);
    width: 14px;
    height: 14px;
}

/* Кнопки */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 10px 16px;
    border-radius: var(--border-radius-md);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed);
    outline: none;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #c14a1d 100%);
    color: white;
}

.btn-primary:hover {
    box-shadow: 0 0 15px var(--accent-glow);
    background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent-primary) 100%);
}

.btn-glow {
    box-shadow: 0 0 10px var(--accent-glow);
}

.btn-secondary {
    background: rgba(var(--tint), 0.05);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(var(--tint), 0.1);
    border-color: rgba(var(--tint), 0.2);
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-icon:hover {
    color: var(--text-primary);
    background: rgba(var(--tint), 0.05);
}

.btn-tab {
    background: rgba(var(--tint), 0.03);
    border: 1px solid var(--panel-border);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    padding: 6px 12px;
    font-size: 11px;
}

.btn-tab.active {
    background: var(--neon-cyan);
    color: var(--text-on-accent);
    font-weight: 600;
    box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.4);
}

.w-100 {
    width: 100%;
}

.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }

/* Область просмотра (Предпросмотр) */
.preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Шапка предпросмотра */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.preview-nav {
    display: flex;
    align-items: center;
    gap: 14px;
}

#page-indicator {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

.zoom-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

#zoom-indicator {
    font-size: 11px;
    color: var(--text-secondary);
    font-family: 'Fira Code', monospace;
}

/* Сетка просмотра */
.preview-viewport {
    flex: 1;
    overflow: auto;
    background: var(--field-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.preview-container {
    display: flex;
    justify-content: center;
    gap: calc(30px * var(--zoom, 1));
    transition: all 0.2s ease-out;
}

/* Одиночный лист */
.single-layout {
    flex-direction: row;
    align-items: flex-start;
}

/* Галерейный вид (мультистраничный) */
.multi-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(calc(360px * var(--zoom, 1)), 1fr));
    width: 100%;
    max-width: 1000px;
    gap: calc(24px * var(--zoom, 1));
}

/* Оформление листа бумаги */
.paper-sheet {
    background-color: white;
    width: calc(540px * var(--zoom, 1)); /* Масштабированный размер A4, чуть компактнее */
    aspect-ratio: 2480 / 3508;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 2px 8px var(--field-bg);
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-size: cover;
    transition: box-shadow 0.3s;
    flex-shrink: 0;
}

.paper-sheet:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5), 0 4px 12px var(--field-bg);
}

.paper-sheet img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Индикатор загрузки */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
    backdrop-filter: blur(4px);
    transition: opacity 0.25s ease;
    opacity: 0;
    pointer-events: none;
}

.loading-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(var(--accent-rgb), 0.1);
    border-radius: 50%;
    border-top-color: var(--neon-cyan);
    animation: spin 1s linear infinite;
    box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.2);
}

.loading-text {
    margin-top: 14px;
    font-size: 13px;
    color: var(--neon-cyan);
    font-weight: 500;
}

/* Модальные окна */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    width: 400px;
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Уведомления (Toasts) */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--panel-solid);
    border-left: 4px solid var(--neon-cyan);
    border-top: 1px solid var(--panel-border);
    border-right: 1px solid var(--panel-border);
    border-bottom: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    font-size: 13px;
    min-width: 250px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.success {
    border-left-color: var(--neon-green);
}

.toast.error {
    border-left-color: var(--neon-red);
}

/* Анимации */
@keyframes spin {
    to { transform: rotate(360deg); }
}

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

@keyframes slideIn {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ---- Экран загрузки: прогресс и подсказка про зеркало ---- */
.load-progress { width: min(360px, 80vw); height: 8px; margin-top: 18px; border-radius: 4px; background: rgba(var(--tint), 0.12); overflow: hidden; }
.load-progress-bar { width: 0%; height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--accent-primary), #ff9a6e); transition: width 0.4s ease; }
.mirror-hint { margin-top: 18px; padding: 12px 16px; border-radius: 10px; background: rgba(255,200,0,0.12); border: 1px solid rgba(255,200,0,0.4); font-size: 14px; max-width: 420px; line-height: 1.5; }
.mirror-hint a { color: #ffd54f; font-weight: 600; }

/* ==========================================================================
   Телефоны и узкие окна (до 820px): всё в одну колонку, страница прокручивается.
   ========================================================================== */
@media (max-width: 820px) {
    body {
        overflow-x: hidden;
        overflow-y: auto;
        height: auto;
        min-height: 100vh;
        width: 100%;
    }
    .app-container { height: auto; min-height: 100vh; }

    .app-header {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 12px;
        position: sticky;
        top: 0;
        z-index: 50;
    }
    .logo .icon { font-size: 22px; }
    .logo-text h1 { font-size: 17px; }
    .logo-text .subtitle { display: none; }
    .header-actions {
        width: 100%;
        flex-wrap: wrap;
        gap: 8px;
    }
    .header-actions > * { flex: 1 1 auto; }
    .header-actions > .theme-toggle { flex: 0 0 auto; margin-left: auto; }
    .header-actions .btn { min-height: 42px; padding: 8px 10px; font-size: 13px; }
    .header-actions select { min-height: 38px; max-width: 100%; }

    .app-main {
        flex-direction: column;
        overflow: visible;
        padding: 10px;
        gap: 10px;
    }
    .settings-sidebar { width: 100%; overflow: visible; }
    .tabs-content { overflow: visible; max-height: none; }
    .tab-btn { padding-left: 6px; padding-right: 6px; font-size: 12px; }

    .preview-area { overflow: visible; min-height: 75vh; }
    .preview-header {
        flex-wrap: wrap;
        gap: 8px;
        padding: 8px 10px;
        margin-bottom: 10px;
        justify-content: center;
    }
    #page-indicator { min-width: 0; }
    .preview-viewport { padding: 10px; min-height: 60vh; }
    .paper-sheet { max-width: 100%; }
    .multi-layout { grid-template-columns: 1fr; }

    .btn-icon { width: 40px; height: 40px; }      /* удобнее попадать пальцем */
    .toast-container { left: 10px; right: 10px; bottom: 10px; }
    .toast { max-width: none; }
    .modal-content { width: calc(100vw - 24px); max-width: none; }
}
@media (max-width: 820px) {
    .preset-selector { display: flex; align-items: center; gap: 8px; width: 100%; flex-basis: 100%; }
    .preset-selector select { flex: 1; }
}

.field-hint { margin-top: 6px; font-size: 12px; color: #ffd54f; line-height: 1.4; }

/* ---- Шрифт из почерка ---- */
.hw-steps { margin: 6px 0 12px 18px; padding: 0; font-size: 13px; line-height: 1.6; color: var(--text-secondary); }
.hw-steps a { color: var(--neon-cyan); }
.hw-result { margin-top: 12px; }
.hw-report { font-size: 13px; line-height: 1.5; margin-bottom: 8px; }
.hw-report .warn { color: #ffd54f; }
.hw-result img { width: 100%; border-radius: 8px; background: #fff; display: block; }

/* ---- Пустой лист до загрузки документа ---- */
.preview-empty { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
    text-align: center; padding: 24px; color: #5b6b8c;
    background-image: linear-gradient(#dbe9ff 1px, transparent 1px), linear-gradient(90deg, #dbe9ff 1px, transparent 1px);
    background-size: 22px 22px; background-color: #fff; }
.preview-empty-icon { font-size: 42px; margin-bottom: 10px; }
.preview-empty-title { font-family: 'Onest', 'Inter', sans-serif; font-size: 18px; font-weight: 600; color: #2b3a5c; margin-bottom: 6px; }
.preview-empty-text { font-size: 13px; line-height: 1.5; }

/* ---- Экспорт в PDF ---- */
.export-overlay { position: fixed; inset: 0; z-index: 9000; background: rgba(8, 10, 22, 0.72); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; padding: 16px; }
.export-card { background: var(--panel-solid, #141a2e); border: 1px solid var(--panel-border, #2a3350); border-radius: 16px;
    padding: 28px 32px; width: min(420px, 100%); text-align: center; color: var(--text-primary, #fff); }
.export-card h3 { margin: 16px 0 6px; font-family: 'Onest', 'Inter', sans-serif; }
.export-card p { opacity: 0.75; font-size: 14px; margin: 0; }
.export-card .load-progress { margin: 16px auto 4px; width: 100%; }

/* Плашка фоновой загрузки движка */
.engine-pill { position: fixed; left: 16px; bottom: 16px; z-index: 900; display: flex; align-items: center; gap: 8px; max-width: calc(100vw - 32px); padding: 8px 14px; border-radius: 999px; background: var(--panel-solid); border: 1px solid rgba(var(--accent-rgb),0.35); color: var(--text-primary); font-size: 13px; box-shadow: 0 4px 16px rgba(0,0,0,0.25); }
.engine-pill-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-primary); animation: engine-pulse 1.2s ease-in-out infinite; flex-shrink: 0; }
.engine-pill a { color: #ffd54f; font-weight: 600; white-space: nowrap; }
@keyframes engine-pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* Принесённый шрифт и рекомендуемые шрифты */
.saved-font-bar {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px;
    margin-top: 10px; padding: 8px 10px; border-radius: 8px;
    background: rgba(var(--accent-rgb), 0.14); border: 1px solid var(--panel-border); font-size: 13px; color: var(--text-primary);
}
.link-btn {
    background: none; border: none; padding: 0; cursor: pointer;
    color: var(--neon-cyan); font-size: 13px; text-decoration: underline;
}
.font-recs { margin-top: 10px; font-size: 13px; color: var(--text-primary); }
.font-recs a { color: var(--neon-cyan); }
.font-recs summary { cursor: pointer; font-weight: 600; }
.font-recs ul { margin: 8px 0 6px 18px; padding: 0; }
.font-recs li { margin: 3px 0; }
.font-recs-note { margin: 4px 0 0; color: var(--text-secondary); font-size: 12px; line-height: 1.4; }

/* Тема и переход на главную */
:root[data-theme="light"] .blob { opacity: 0.1; mix-blend-mode: normal; }
.header-link { color: var(--text-secondary); text-decoration: none; font-size: 14px; padding: 8px 4px; white-space: nowrap; }
.header-link:hover { color: var(--text-primary); }
.theme-toggle { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--panel-border); background: rgba(var(--tint), 0.05);
    color: var(--text-primary); cursor: pointer; font-size: 17px; line-height: 1; display: inline-grid; place-items: center; }
.theme-toggle:hover { background: rgba(var(--tint), 0.12); }

/* ===== Оформление v2: плоские карточки, оранжевый акцент, без неона и эмодзи ===== */
body { overflow: hidden; }
.glow-bg { display: none; }
.app-header { padding: 0 20px; height: 60px; background: var(--header-bg); backdrop-filter: none; }
.logo { display: flex; align-items: center; gap: 9px; }
.logo-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--accent-primary); display: inline-block; }
.logo-text h1 { font-size: 21px; letter-spacing: 0; }
.header-actions { gap: 12px; }
.preset-selector { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); font-size: 14px; }
.preset-selector label { margin: 0; }
.app-header select, .neon-select, .neon-input {
    background: var(--field-bg); color: var(--text-primary); border: 1px solid var(--panel-border);
    border-radius: 10px; padding: 9px 12px; font: 500 14px 'Onest', sans-serif; outline: none; color-scheme: inherit;
}
.app-header select { min-width: 160px; height: 38px; }
.app-header select:focus, .neon-select:focus, .neon-input:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), .18); }
.neon-select option, .app-header select option { background: var(--panel-solid); color: var(--text-primary); }

.btn { font-family: 'Onest', sans-serif; font-weight: 500; font-size: 14px; border-radius: 10px; padding: 9px 16px; box-shadow: none; text-shadow: none; }
.btn-primary, .btn-glow { background: var(--accent-primary); color: var(--text-on-accent); border: 1px solid transparent; box-shadow: none; }
.btn-primary:hover, .btn-glow:hover { background: var(--accent-hover); box-shadow: none; transform: none; }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid var(--panel-border); }
.btn-secondary:hover { background: rgba(var(--tint), .07); }
.btn-icon { width: 34px; height: 34px; padding: 0; display: inline-grid; place-items: center; border-radius: 9px; background: transparent; border: 1px solid var(--panel-border); color: var(--text-primary); }
.btn-icon:hover { background: rgba(var(--tint), .07); }

.app-main { padding: 14px; gap: 14px; }
.glass-panel { background: var(--panel-solid); backdrop-filter: none; -webkit-backdrop-filter: none; box-shadow: none; border-radius: 16px; }
.glass-panel:hover { border-color: var(--panel-border); }
.settings-sidebar { width: 360px; }

.tabs-header { padding: 10px; gap: 4px; border-bottom: 1px solid var(--panel-border); background: transparent; }
.tab-btn { flex: 1; padding: 9px 4px; border-radius: 9px; font: 500 14px 'Onest', sans-serif; color: var(--text-secondary); background: transparent; border: 0; white-space: nowrap; }
.tab-btn:hover { color: var(--text-primary); background: rgba(var(--tint), .06); }
.tab-btn.active { background: rgba(var(--accent-rgb), .16); color: var(--accent-text); }
.tab-btn.active::after { display: none; }
.tabs-content { padding: 18px; }
.tab-title { font: 600 17px 'Unbounded', 'Onest', sans-serif; border: 0; padding: 0; margin: 0 0 14px; }
.tab-title::before { display: none; }

.status-card, .settings-group { background: transparent; border: 1px solid var(--panel-border); border-radius: 14px; padding: 14px; box-shadow: none; }
.status-card h4, .group-title { font: 600 12px 'Onest', sans-serif; letter-spacing: .06em; text-transform: uppercase; color: var(--text-secondary); margin: 0 0 12px; padding: 0; border: 0; }
.status-item { font-size: 14px; padding: 4px 0; }
.status-indicator { width: 8px; height: 8px; box-shadow: none; }
.status-indicator.green { background: #34c38f; }
.status-indicator.red { background: #e5675b; }

.upload-section { gap: 10px; }
.upload-box { background: transparent; border: 1.5px dashed var(--panel-border); border-radius: 14px; padding: 18px 14px; gap: 4px; color: var(--text-secondary); transition: border-color .15s, background .15s; }
.upload-box:hover { border-color: var(--accent-primary); background: rgba(var(--accent-rgb), .06); }
.upload-icon { color: var(--accent-text); display: grid; place-items: center; margin-bottom: 4px; font-size: 0; }
.upload-title { font-weight: 600; font-size: 15px; color: var(--text-primary); }
.upload-desc { font-size: 12.5px; color: var(--text-secondary); }

.slider-control { margin-bottom: 14px; }
.slider-header, .slider-label { display: flex; justify-content: space-between; align-items: baseline; font-size: 14px; color: var(--text-secondary); margin-bottom: 6px; }
.slider-value { font: 500 13px 'Fira Code', monospace; color: var(--accent-text); }
.neon-slider { -webkit-appearance: auto; appearance: auto; accent-color: var(--accent-primary); background: none; height: 20px; width: 100%; margin: 0; cursor: pointer; }
.neon-slider::-webkit-slider-thumb { box-shadow: none; }
.field-control label, .color-control label { font-size: 14px; color: var(--text-secondary); }
.color-control input[type="color"] { border-radius: 10px; border: 1px solid var(--panel-border); }
.checkbox-control { font-size: 14px; color: var(--text-primary); }
.checkbox-control input[type="checkbox"] { accent-color: var(--accent-primary); }
.link-btn, .hw-steps a, .font-recs a, .settings-group a { color: var(--accent-text); }
.font-recs { background: transparent; border: 1px solid var(--panel-border); border-radius: 14px; padding: 12px 14px; margin-top: 12px; }

.preview-header { padding: 8px 12px; margin-bottom: 14px; border-radius: 14px; gap: 12px; }
.view-mode-selector { display: inline-flex; padding: 3px; gap: 2px; background: var(--field-bg); border: 1px solid var(--panel-border); border-radius: 11px; }
.btn-tab { border: 0; background: transparent; color: var(--text-secondary); padding: 7px 16px; border-radius: 8px; box-shadow: none; font-size: 14px; }
.btn-tab:hover { color: var(--text-primary); background: transparent; }
.btn-tab.active { background: var(--accent-primary); color: var(--text-on-accent); box-shadow: none; }
#page-indicator, #zoom-indicator { font: 500 13px 'Onest', sans-serif; color: var(--text-secondary); min-width: 0; }
#page-indicator { min-width: 110px; }
.preview-viewport { background: var(--field-bg); border-radius: 16px; padding: 24px; }
.paper-sheet { border-radius: 3px; box-shadow: 0 18px 50px -18px var(--panel-shadow), 0 2px 6px rgba(0, 0, 0, .18); }
.paper-sheet:hover { box-shadow: 0 18px 50px -18px var(--panel-shadow), 0 2px 6px rgba(0, 0, 0, .18); }
.preview-empty-icon { font-size: 0; color: #9aa7c6; margin-bottom: 12px; }
.loading-overlay { backdrop-filter: none; }

.toast { background: var(--panel-solid); color: var(--text-primary); border: 1px solid var(--panel-border); border-left: 3px solid var(--accent-primary); border-radius: 12px; box-shadow: 0 12px 30px -12px var(--panel-shadow); font-size: 14px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.toast.success { border-left-color: #34c38f; }
.toast.error { border-left-color: #e5675b; }
.toast-close { background: none; border: 0; color: var(--text-secondary); cursor: pointer; font-size: 14px; }
.theme-toggle { color: var(--text-primary); }
.theme-toggle svg { display: block; }

@media (max-width: 900px) {
    body { overflow: auto; height: auto; }
    .app-header { height: auto; padding: 12px 14px; }
    .settings-sidebar { width: 100%; }
    .tabs-header { overflow-x: auto; }
}
.tab-title { font-weight: 500; }
.neon-slider { -webkit-appearance: none; appearance: none; height: 6px; border-radius: 99px; margin: 8px 0;
    background: linear-gradient(to right, var(--accent-primary) var(--p, 50%), rgba(var(--tint), .16) var(--p, 50%)); }
.neon-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: var(--accent-primary);
    border: 3px solid var(--panel-solid); box-shadow: 0 0 0 1px var(--accent-primary); cursor: pointer; }
.neon-slider::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--accent-primary); border: 3px solid var(--panel-solid); box-shadow: 0 0 0 1px var(--accent-primary); cursor: pointer; }
.neon-slider::-moz-range-track { background: transparent; }
.control-row { margin-bottom: 12px; } .control-row.mt-2 { margin-top: 10px; }

/* Свои выпадающие списки */
.dd { position: relative; display: inline-block; min-width: 0; }
.dd-native { position: absolute; opacity: 0; pointer-events: none; width: 1px; height: 1px; }
.dd-btn { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; min-width: 180px; height: 38px; padding: 0 12px;
    background: var(--field-bg); color: var(--text-primary); border: 1px solid var(--panel-border); border-radius: 10px; font: 500 14px 'Onest', sans-serif; cursor: pointer; text-align: left; }
.dd-btn:hover { border-color: rgba(var(--accent-rgb), .55); }
.dd-btn[aria-expanded="true"] { border-color: var(--accent-primary); box-shadow: 0 0 0 3px rgba(var(--accent-rgb), .18); }
.dd-btn.is-placeholder .dd-label { color: var(--text-secondary); }
.dd-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dd-caret { flex-shrink: 0; color: var(--text-secondary); }
.dd-menu { position: absolute; z-index: 60; top: calc(100% + 6px); left: 0; min-width: 100%; width: max-content; max-width: 360px; margin: 0; padding: 6px; list-style: none;
    background: var(--panel-solid); border: 1px solid var(--panel-border); border-radius: 12px; box-shadow: 0 18px 40px -14px var(--panel-shadow), 0 2px 8px rgba(0, 0, 0, .25); }
.dd-menu li { padding: 9px 12px; border-radius: 8px; font-size: 14px; color: var(--text-primary); cursor: pointer; }
.dd-menu li:hover { background: rgba(var(--accent-rgb), .14); }
.dd-menu li.is-selected { color: var(--accent-text); background: rgba(var(--accent-rgb), .12); }
.dd-menu li.is-disabled { color: var(--text-muted, var(--text-secondary)); cursor: default; }
.dd-menu li.is-disabled:hover { background: transparent; }
.field-control .dd, .field-control .dd-btn { width: 100%; }
.header-actions .dd { width: 210px; }

/* Пустой предпросмотр: карточка загрузки вместо пустого листа */
.preview-viewport.drag { outline: 2px dashed var(--accent-primary); outline-offset: -10px; }
.paper-sheet.is-empty { width: min(560px, 100%); aspect-ratio: auto; min-height: 340px; margin-top: 7vh; background: transparent; box-shadow: none;
    border: 1.5px dashed var(--panel-border); border-radius: 22px; overflow: visible; }
.paper-sheet.is-empty:hover { box-shadow: none; border-color: rgba(var(--accent-rgb), .5); }
.paper-sheet.is-empty .preview-empty { position: static; inset: auto; padding: 36px 28px; background: none; }
.paper-sheet.is-empty .preview-empty-icon { color: var(--accent-text); }
.paper-sheet.is-empty .preview-empty-title { font: 500 22px 'Unbounded', 'Onest', sans-serif; color: var(--text-primary); margin-bottom: 8px; }
.paper-sheet.is-empty .preview-empty-text { font-size: 15px; color: var(--text-secondary); margin-bottom: 20px; }
.preview-empty-btn { cursor: pointer; display: inline-block; }
.paper-sheet.is-empty .loading-overlay { display: none; }
.paper-sheet.is-empty { border-color: rgba(var(--tint), .24); }