/* Базовые стили */
:root {
    --primary: #6C63FF;
    --primary-dark: #4a43d4;
    --secondary: #FF6584;
    --dark: #1a1a2e;
    --darker: #0f0f1a;
    --light: #f8f9fa;
    --gray: #6c757d;
    --gray-dark: #343a40;
    --success: #36D399;
    --warning: #FFB74D;
    --danger: #FF6B6B;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    --radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Raleway', sans-serif;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    color: var(--light);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Шапка */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 2px solid rgba(108, 99, 255, 0.3);
}

.logo-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.logo-icon {
    font-size: 2.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo-text {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1.8rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: 1px;
}

.motto {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 300;
}

.header-actions {
    display: flex;
    gap: 15px;
}

.btn-icon {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(108, 99, 255, 0.3);
    color: var(--light);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.btn-icon:hover {
    background: var(--primary);
    transform: rotate(15deg);
}

/* Основной контент */
.main-content {
    display: flex;
    flex: 1;
    gap: 30px;
    margin-bottom: 30px;
}

.player-section {
    flex: 3;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.playlist-section {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
}

/* Видеоплеер */
.player-container {
    position: relative;
    background: var(--darker);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    aspect-ratio: 16/9;
}

.video-player {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    background: #000;
}

.custom-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 10;
}

.player-container:hover .custom-controls,
.player-container:focus-within .custom-controls {
    transform: translateY(0);
}

/* Прогресс-бар */
.progress-container {
    margin-bottom: 20px;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    position: relative;
    cursor: pointer;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

.progress-thumb {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    background: var(--light);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s;
}

.progress-bar:hover .progress-thumb {
    opacity: 1;
}

.time-display {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Основные кнопки управления */
.main-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

.control-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: var(--light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    backdrop-filter: blur(5px);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.play-pause {
    background: var(--primary);
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
}

.play-pause:hover {
    background: var(--primary-dark);
}

/* Кнопка ЦИКЛ */
.loop-btn {
    background: linear-gradient(135deg, var(--primary), #8a84ff);
    width: auto;
    padding: 0 25px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    font-weight: 600;
    letter-spacing: 1px;
}

.loop-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.7s;
}

.loop-btn:hover::after {
    left: 100%;
}

.loop-btn[data-loop-state="1"] {
    background: linear-gradient(135deg, var(--secondary), #ff8a9e);
}

.loop-btn[data-loop-state="2"] {
    background: linear-gradient(135deg, var(--success), #5cd6b3);
    animation: pulse-loop 2s infinite;
}

@keyframes pulse-loop {
    0%, 100% { box-shadow: 0 0 0 0 rgba(54, 211, 153, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(54, 211, 153, 0); }
}

.loop-label {
    font-size: 0.9rem;
    font-weight: 700;
}

/* Громкость */
.volume-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.volume-slider-container {
    width: 100px;
}

.volume-slider {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--light);
    border-radius: 50%;
    cursor: pointer;
}

/* Мобильные подсказки */
.mobile-controls-hint {
    display: none;
    justify-content: space-around;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.hint-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Оверлей жестов */
.gesture-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 5;
    display: none;
}

/* Панель "Качество топлива" */
.fuel-quality-panel {
    background: rgba(26, 26, 46, 0.8);
    border-radius: var(--radius);
    padding: 20px;
    border: 1px solid rgba(108, 99, 255, 0.2);
    backdrop-filter: blur(10px);
}

.fuel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    cursor: pointer;
}

.fuel-header h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-toggle {
    background: transparent;
    border: none;
    color: var(--light);
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s;
}

.fuel-details {
    display: grid;
    gap: 15px;
}

.fuel-row {
    display: flex;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 15px;
}

.fuel-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.fuel-category {
    flex: 1;
    font-weight: 700;
    color: var(--primary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.fuel-data {
    flex: 2;
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Плейлист */
.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(108, 99, 255, 0.3);
}

.playlist-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.playlist-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 0.9rem;
    color: var(--gray);
}

.folder-upload-section {
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px dashed rgba(108, 99, 255, 0.5);
}

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

.folder-info i {
    font-size: 1.8rem;
    color: var(--primary);
}

.folder-text {
    display: flex;
    flex-direction: column;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(108, 99, 255, 0.5);
    color: var(--light);
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(108, 99, 255, 0.3);
}

/* Список видео */
.video-list-container {
    flex: 1;
    overflow-y: auto;
    max-height: 500px;
    background: rgba(15, 15, 26, 0.7);
    border-radius: var(--radius);
    padding: 10px;
}

.video-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.video-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.video-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.video-item.active {
    background: rgba(108, 99, 255, 0.2);
    border-left-color: var(--primary);
}

.video-thumbnail {
    width: 80px;
    height: 45px;
    background: var(--dark);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
}

.video-info {
    flex: 1;
    overflow: hidden;
}

.video-title {
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 5px;
}

.video-meta {
    display: flex;
    gap: 15px;
    font-size: 0.8rem;
    color: var(--gray);
}

.empty-state {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
    color: var(--gray);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.empty-state .hint {
    font-size: 0.8rem;
    margin-top: 10px;
}

/* Мобильное меню */
.mobile-menu {
    display: none;
    background: rgba(26, 26, 46, 0.9);
    border-radius: var(--radius);
    padding: 10px;
    margin-top: 20px;
    justify-content: space-around;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-menu-btn {
    background: transparent;
    border: none;
    color: var(--light);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    flex: 1;
}

.mobile-menu-btn.active {
    background: rgba(108, 99, 255, 0.2);
    color: var(--primary);
}

.mobile-menu-btn span {
    font-size: 0.7rem;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--dark);
    border-radius: var(--radius);
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
    border: 1px solid rgba(108, 99, 255, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--light);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.btn-close:hover {
    color: var(--secondary);
    transform: rotate(90deg);
}

.modal-body {
    padding: 25px;
}

.methodology-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.step-number {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.step-content h3 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 10px;
    color: var(--primary);
}

.loop-explain {
    background: rgba(108, 99, 255, 0.1);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 30px;
}

.loop-explain h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.loop-states {
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.loop-state {
    flex: 1;
    text-align: center;
}

.state-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-weight: 700;
    font-size: 1.2rem;
}

.state-icon.off {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
}

.state-icon.single {
    background: rgba(255, 101, 132, 0.2);
    color: var(--secondary);
}

.state-icon.playlist {
    background: rgba(54, 211, 153, 0.2);
    color: var(--success);
}

/* Уведомления */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--success);
    color: white;
    padding: 15px 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    z-index: 1000;
}

.notification.show {
    transform: translateY(0);
    opacity: 1;
}

/* Загрузчик */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 15, 26, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    backdrop-filter: blur(5px);
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(108, 99, 255, 0.3);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

/* Адаптивность для мобильных */
@media (max-width: 1100px) {
    .main-content {
        flex-direction: column;
    }
    
    .playlist-section {
        min-width: 100%;
    }
    
    .video-list-container {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .logo-text {
        font-size: 1.5rem;
    }
    
    .custom-controls {
        transform: translateY(0);
        background: rgba(0, 0, 0, 0.85);
        padding: 15px;
    }
    
    .main-controls {
        justify-content: center;
        gap: 10px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .play-pause {
        width: 55px;
        height: 55px;
    }
    
    .loop-btn {
        padding: 0 20px;
    }
    
    .loop-label {
        display: none;
    }
    
    .volume-container {
        display: none;
    }
    
    .mobile-controls-hint {
        display: flex;
    }
    
    .gesture-overlay {
        display: block;
    }
    
    .fuel-quality-panel {
        display: none;
    }
    
    .fuel-quality-panel.mobile-visible {
        display: block;
    }
    
    .playlist-section {
        display: none;
    }
    
    .playlist-section.mobile-visible {
        display: flex;
    }
    
    .mobile-menu {
        display: flex;
    }
    
    .modal-content {
        margin: 0;
        border-radius: 0;
        max-height: 100vh;
    }
    
    .loop-states {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .player-container {
        aspect-ratio: 9/16;
    }
    
    .main-controls {
        flex-wrap: wrap;
        justify-content: space-between;
    }
    
    .control-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .play-pause {
        width: 50px;
        height: 50px;
    }
    
    .modal-header h2 {
        font-size: 1.2rem;
    }
}