ь /* LitePlank - Чистые CSS стили */

/* Цветовая палитра */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --accent: #42b983;
    --accent-hover: #36a873;
    --accent-soft: rgba(66, 185, 131, 0.1);
    --danger: #dc3545;
    --danger-hover: #c82333;
    --danger-soft: rgba(220, 53, 69, 0.1);
    --warning: #ffc107;
    --warning-hover: #e0a800;
    --warning-soft: rgba(255, 193, 7, 0.1);
    --border: #e9ecef;
    --border-hover: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.15);
    --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.05);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

/* Темная тема */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --accent: #42d392;
    --accent-hover: #36c180;
    --accent-soft: rgba(66, 211, 146, 0.16);
    --danger: #ff6b6b;
    --danger-hover: #ff5252;
    --danger-soft: rgba(255, 107, 107, 0.16);
    --warning: #ffd277;
    --warning-hover: #ffc107;
    --warning-soft: rgba(255, 210, 119, 0.16);
    --border: #404040;
    --border-hover: #555555;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.4);
    --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Сброс и базовые стили */
* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Навигация */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-card);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.brand-logo {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.5px;
    margin: 0;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
    max-width: 600px;
    flex-wrap: wrap;
    min-width: 0;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    flex: 1;
    min-width: 60px;
    max-width: 100px;
    box-shadow: var(--shadow-card);
    font-size: 0.875rem;
}

.tab-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(66, 185, 131, 0.3);
}

.tab-btn.active:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent));
    box-shadow: 0 6px 16px rgba(66, 185, 131, 0.4);
    transform: translateY(-2px);
}

.tab-icon {
    font-size: 1.25rem;
}

.tab-text {
    font-size: 0.75rem;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.theme-btn {
    background: var(--bg-primary);
    border: 2px solid var(--border);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
}

.theme-btn:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(66, 185, 131, 0.2);
}

/* Мобильное меню внизу */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 0.5rem 1rem;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.mobile-nav .tabs {
    display: flex;
    gap: 0.25rem;
    justify-content: space-around;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.mobile-nav .tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.75rem 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    flex: 1;
    min-width: 60px;
    max-width: 100px;
    box-shadow: var(--shadow-card);
    font-size: 0.875rem;
}

.mobile-nav .tab-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.mobile-nav .tab-btn.active {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    border-color: var(--accent);
    box-shadow: 0 4px 12px rgba(66, 185, 131, 0.3);
}

.mobile-nav .tab-btn.active:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent));
    box-shadow: 0 6px 16px rgba(66, 185, 131, 0.4);
    transform: translateY(-2px);
}

.mobile-nav .tab-icon {
    font-size: 1.25rem;
}

.mobile-nav .tab-text {
    font-size: 0.75rem;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Основное содержимое */
.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Таймер */
.timer-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

/* Селектор планки */
.plank-selector-wrapper {
    margin-bottom: 1.5rem;
}

.plank-selector-container {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}

.plank-selector-header {
    margin-bottom: 0.75rem;
}

.plank-selector-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.plank-selector {
    margin-bottom: 1rem;
}

.plank-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.plank-select:hover {
    border-color: var(--accent);
}

.plank-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.plank-preview {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
}

.plank-image-container {
    width: 80px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.plank-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.plank-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-align: left;
}

.plank-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.plank-met {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.plank-met-value {
    color: var(--accent);
    font-weight: 700;
}

.timer-display {
    margin-bottom: 2rem;
}

.time {
    font-size: 4rem;
    font-weight: bold;
    color: var(--accent);
    margin-bottom: 1rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.progress-container {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto;
    max-width: 400px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    transition: width 0.3s ease;
    border-radius: var(--radius-full);
}

.controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 120px;
    box-shadow: var(--shadow-card);
}

.btn-start {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
}

.btn-start:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent));
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(66, 185, 131, 0.3);
}

.btn-pause {
    background: linear-gradient(135deg, var(--warning), var(--warning-hover));
    color: var(--text-primary);
}

.btn-pause:hover {
    background: linear-gradient(135deg, var(--warning-hover), var(--warning));
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 193, 7, 0.3);
}

.btn-reset {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
}

.btn-reset:hover {
    background: linear-gradient(135deg, #c82333, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(220, 53, 69, 0.3);
}

.settings {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.settings label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
}

.settings input {
    padding: 0.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    width: 80px;
    text-align: center;
    font-size: 1rem;
    background: var(--bg-primary);
    font-weight: 600;
    color: var(--text-primary);
}

.settings input:disabled {
    background: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

/* История */
.history-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.history-header h2 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.5rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    transition: var(--transition-fast);
}

.stat-item:hover {
    transform: translateY(-2px);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-primary);
}

.stat-hint {
    font-size: 1rem;
    color: var(--text-secondary);
    cursor: help;
    margin-left: 0.5rem;
    transition: var(--transition-fast);
}

.stat-hint:hover {
    color: var(--accent);
    transform: scale(1.2);
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    transition: var(--transition-fast);
}

.history-item:hover {
    background-color: var(--bg-tertiary);
}

.history-item:last-child {
    border-bottom: none;
}

.session-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.session-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.session-plank {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
    background: var(--accent-soft);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin: 0.125rem 0;
}

.session-duration {
    font-size: 1.125rem;
    font-weight: bold;
    color: var(--text-primary);
}

.session-calories {
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 600;
}

.session-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-delete {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    font-size: 1.25rem;
}

.btn-delete:hover {
    background-color: var(--danger-soft);
    transform: scale(1.1);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.empty-state p {
    margin: 0.5rem 0;
    font-size: 1.125rem;
}

.hint {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.history-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
}

.btn-clear {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(220, 53, 69, 0.3);
}

.btn-clear:hover:not(:disabled) {
    background: linear-gradient(135deg, #c82333, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(220, 53, 69, 0.4);
}

.btn-clear:disabled {
    background: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

/* Прогресс */
.progress-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.progress-header h2 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.5rem;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    transition: var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.progress-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.progress-chart {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}

.chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.chart-container {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 200px;
    margin-bottom: 0.5rem;
    padding: 0 0.5rem;
    background: linear-gradient(180deg, rgba(255,255,255,0.5), rgba(255,255,255,0));
    border-radius: var(--radius-sm);
}

.chart-bar {
    flex: 1;
    margin: 0 2px;
    background: linear-gradient(180deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    position: relative;
    transition: var(--transition);
    min-height: 10px;
}

.chart-bar:hover {
    transform: scaleY(1.05);
    background: linear-gradient(180deg, var(--accent-hover), var(--accent));
}

.bar-label {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.9);
    padding: 0 0.25rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.chart-axis {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.progress-insights {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.insight-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
    transition: var(--transition-fast);
}

.insight-card:hover {
    transform: translateY(-2px);
}

.insight-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.insight-value {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.insight-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.trend-indicator {
    font-size: 1.125rem;
    font-weight: bold;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: 0.5rem;
}

.trend-improving {
    background: var(--accent-soft);
    color: var(--accent);
}

.trend-declining {
    background: var(--danger-soft);
    color: var(--danger);
}

.trend-stable {
    background: var(--warning-soft);
    color: var(--warning);
}

.trend-value {
    font-size: 1rem;
    font-weight: bold;
    color: var(--text-primary);
}

.recommendations {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.recommendation {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}



/* Настройки */
.settings-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.settings-header {
    margin-bottom: 2rem;
    text-align: center;
}

.settings-header h2 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.settings-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.settings-section {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-card);
}

.setting-item {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition-fast);
}

.setting-item:hover {
    background: var(--bg-primary);
    transform: translateY(-1px);
}

.setting-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
    gap: 1rem;
}

.setting-input {
    padding: 0.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    width: 120px;
    text-align: center;
    font-size: 1rem;
    background: var(--bg-primary);
    font-weight: 600;
    color: var(--text-primary);
    min-width: 80px;
}

.setting-checkbox {
    width: 24px;
    height: 24px;
    accent-color: var(--accent);
    cursor: pointer;
}

.data-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.btn-export,
.btn-import {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    text-align: center;
    background: linear-gradient(135deg, var(--warning), var(--warning-hover));
    color: var(--text-primary);
    border: 2px solid transparent;
    box-shadow: 0 4px 6px rgba(255, 193, 7, 0.3);
}

.btn-export:hover,
.btn-import:hover {
    background: linear-gradient(135deg, var(--warning-hover), var(--warning));
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 193, 7, 0.4);
}

.btn-import {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    box-shadow: 0 4px 6px rgba(66, 185, 131, 0.3);
}

.btn-import:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent));
    box-shadow: 0 6px 12px rgba(66, 185, 131, 0.4);
}

.data-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.reset-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(220, 53, 69, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c82333, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(220, 53, 69, 0.4);
}

.btn-warning {
    background: linear-gradient(135deg, #dc3545, #c82333);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 6px rgba(220, 53, 69, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #c82333, #dc3545);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(220, 53, 69, 0.4);
}

.reset-info {
    color: var(--danger);
    font-size: 0.875rem;
    line-height: 1.5;
    background: var(--danger-soft);
    padding: 1rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--danger-soft);
}

/* Стилизация скроллбара */
.history-list::-webkit-scrollbar,
.chart-container::-webkit-scrollbar {
    width: 8px;
}

.history-list::-webkit-scrollbar-track,
.chart-container::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

.history-list::-webkit-scrollbar-thumb,
.chart-container::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.history-list::-webkit-scrollbar-thumb:hover,
.chart-container::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Мобильная адаптация */
@media (max-width: 1024px) {
    .navbar {
        padding: 1rem;
    }
    
    .tabs {
        gap: 0.25rem;
    }
    
    .tab-btn {
        padding: 0.5rem 1rem;
        min-width: 80px;
    }
    
    .tab-text {
        display: inline;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem;
    }
    
    .brand {
        gap: 0.75rem;
    }
    
    .brand-title {
        font-size: 1.125rem;
    }
    
    .brand-subtitle {
        font-size: 0.6875rem;
    }
    
    /* Показываем мобильное меню на экранах 768px и меньше */
    .mobile-nav {
        display: block;
    }
    
    /* Скрываем основное меню на маленьких экранах */
    .tabs {
        display: none;
    }
    
    .main-content {
        padding: 1rem;
        padding-bottom: 4rem; /* Отступ для мобильного меню */
    }
    
    .timer-container {
        padding: 1.5rem;
    }
    
    .time {
        font-size: 3rem;
    }
    
    .controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 200px;
    }
    
    .settings {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .settings label {
        width: 100%;
        max-width: 250px;
        justify-content: space-between;
    }
    
    .progress-content {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        height: 150px;
    }
    
    .plank-preview {
        flex-direction: column;
        text-align: center;
    }
    
    .plank-info {
        text-align: center;
    }
    
    .setting-item {
        padding: 0.75rem;
    }
    
    .setting-label {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .setting-input {
        width: 100%;
        max-width: 200px;
    }
    
    .data-actions,
    .reset-actions {
        flex-direction: column;
    }
    
    .btn-export,
    .btn-import,
    .btn-danger,
    .btn-warning {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0.5rem;
    }
    
    .brand {
        gap: 0.5rem;
    }
    
    .brand-logo {
        font-size: 1.5rem;
    }
    
    .brand-title {
        font-size: 1rem;
    }
    
    .tabs {
        gap: 0.2rem;
    }
    
    .tab-btn {
        padding: 0.4rem 0.6rem;
        min-width: 60px;
        max-width: 80px;
        font-size: 0.75rem;
    }
    
    .main-content {
        padding: 0.5rem;
        padding-bottom: 4rem; /* Отступ для мобильного меню */
    }
    
    .timer-container {
        padding: 1rem;
    }
    
    .time {
        font-size: 2.5rem;
    }
    
    .progress-container {
        max-width: 300px;
    }
    
    .btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .chart-container {
        height: 120px;
    }
    
    .bar-label {
        display: none;
    }
    
    .progression-card {
        padding: 1rem;
    }
    
    .progression-time {
        font-size: 1.5rem;
    }
    
    .data-info,
    .reset-info {
        font-size: 0.8125rem;
    }
}

/* Анимации */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* Специальные эффекты */
.btn-start:active {
    animation: bounce 0.3s ease;
}

.chart-bar:active {
    animation: pulse 0.3s ease;
}

/* Фокусы для доступности */
.tab-btn:focus,
.btn:focus,
input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Печать */
@media print {
    .navbar, .theme-btn {
        display: none;
    }
    
    .main-content {
        padding: 0;
    }
    
    .section {
        display: block !important;
        page-break-inside: avoid;
    }
    
    body {
        background: white;
        color: black;
    }
}