/* mobile/02-navigation.css - Mobile Navigation Component */

/* === MOBILE NAVIGATION VARIABLES === */
:root {
    /* Mobile navigation dimensions */
    --mobile-nav-min-width: 280px;
    --mobile-nav-max-width: 320px;
    --mobile-nav-max-height: 60vh;
    --mobile-nav-btn-size: 28px;
    --mobile-nav-avatar-size: 32px;
    --mobile-nav-album-cover-size: 40px;
    
    /* Mobile navigation colors */
    --mobile-nav-bg: #1a1a1a;
    --mobile-nav-border: #333;
    --mobile-nav-hover-bg: rgba(255, 255, 255, 0.1);
    --mobile-nav-item-border: rgba(255, 255, 255, 0.03);
    
    /* Mobile navigation spacing */
    --mobile-nav-padding: 12px;
    --mobile-nav-gap: 8px;
    --mobile-nav-item-padding: 0.6rem 0.8rem;
    
    /* Mobile navigation z-index */
    --mobile-nav-z-index: calc(var(--z-header) + 1);
}

/* === MOBILE BREAKPOINTS === */
@media (max-width: 768px) {
    /* === HEADER CONTROLS INTEGRATION === */
    .header-controls {
        display: flex;
        align-items: center;
        flex-shrink: 0;
        position: relative;
    }

    /* === MOBILE BURGER BUTTON === */
    .burger-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 20px;
        padding: 6px 12px;
        color: white;
        cursor: pointer;
        transition: var(--transition-base);
        font-size: 12px;
        font-family: var(--font-primary);
        height: 36px;
        white-space: nowrap;
        font-weight: 500;
        text-decoration: none;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
        box-sizing: border-box;
        min-width: 80px;
    }

    .burger-btn:active {
        background: rgba(255, 255, 255, 0.15);
        border-color: var(--accent-color);
        transform: scale(0.98);
        box-shadow: 0 2px 8px rgba(29, 185, 84, 0.2);
    }

    .burger-btn.active {
        background: var(--accent-color);
        color: var(--bg-color);
        border-color: var(--accent-color);
        box-shadow: 0 2px 8px rgba(29, 185, 84, 0.3);
    }

    .burger-icon {
        display: flex;
        flex-direction: column;
        gap: 2px;
        width: 14px;
        height: 10px;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .burger-icon span {
        display: block;
        width: 100%;
        height: 2px;
        background: currentColor;
        border-radius: 1px;
        transition: var(--transition-base);
        transform-origin: center;
    }

    .burger-btn.active .burger-icon {
        position: relative;
        width: 14px;
        height: 14px;
    }

    .burger-btn.active .burger-icon span {
        position: absolute;
        left: 50%;
        top: 50%;
        width: 2px;
        height: 14px;
        background: currentColor;
        border-radius: 1px;
    }

    .burger-btn.active .burger-icon span:nth-child(1) {
        transform: translate(-50%, -50%) rotate(45deg);
    }

    .burger-btn.active .burger-icon span:nth-child(2) {
        opacity: 0;
    }

    .burger-btn.active .burger-icon span:nth-child(3) {
        transform: translate(-50%, -50%) rotate(-45deg);
    }

    .burger-text {
        font-family: var(--font-primary);
        font-weight: 500;
        letter-spacing: 0.5px;
        flex-shrink: 0;
        display: none; /* Скрываем текст на мобильных */
        font-size: 12px;
    }

    /* === MOBILE MENU CONTENT === */
    .burger-menu-content {
        position: fixed;
        top: var(--mobile-header-height);
        left: 0;
        right: 0;
        bottom: var(--mobile-player-height);
        background: var(--mobile-nav-bg);
        border: none;
        border-radius: 0;
        width: 100%;
        max-width: 100%;
        max-height: none;
        height: calc(100vh - var(--mobile-header-height) - var(--mobile-player-height));
        box-shadow: none;
        z-index: var(--mobile-nav-z-index);
        margin-top: 0;
        overflow: hidden;
        flex-direction: column;
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        transition: var(--transition-base);
        
        /* ПРИНУДИТЕЛЬНО СКРЫВАЕМ */
        display: none !important;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        pointer-events: none;
    }

    /* Показывается ТОЛЬКО когда JS добавляет класс .show */
    .burger-menu-content.show {
        /* ПРИНУДИТЕЛЬНО ПОКАЗЫВАЕМ */
        display: flex !important;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
        animation: menuSlideInMobile 0.3s ease-out;
    }

    @keyframes menuSlideInMobile {
        from {
            opacity: 0;
            transform: translateY(-30px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* === MENU LOADING STATE === */
    .menu-loading {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--spacing-current-2xl);
        color: var(--secondary-text-color);
        font-family: var(--font-secondary);
        font-size: var(--font-size-sm);
    }

    .menu-no-results {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--spacing-current-2xl);
        color: var(--secondary-text-color);
        font-family: var(--font-secondary);
        font-size: var(--font-size-sm);
        font-style: italic;
    }

    /* === MOBILE ARTISTS SECTION === */
    .menu-artists-section {
        flex: 1;
        overflow-y: auto;
        background: var(--mobile-nav-bg);
        padding: var(--mobile-nav-padding);
        scrollbar-width: thin;
        scrollbar-color: var(--accent-color) transparent;
        -webkit-overflow-scrolling: touch;
    }

    .menu-artists-section::-webkit-scrollbar {
        width: 4px;
    }

    .menu-artists-section::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.05);
        border-radius: 2px;
    }

    .menu-artists-section::-webkit-scrollbar-thumb {
        background: var(--accent-color);
        border-radius: 2px;
        transition: background var(--transition-base);
    }

    .menu-artists-list {
        display: flex;
        flex-direction: column;
    }

    .menu-artist-item {
        border-bottom: 1px solid var(--mobile-nav-item-border);
    }

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

    .menu-artist-item.currently-playing {
        background: linear-gradient(90deg, rgba(29, 185, 84, 0.2), transparent);
        border-left: 3px solid var(--accent-hover-color);
    }

    .menu-artist-item .artist-main-row.has-selected-album {
        background-color: rgba(29, 185, 84, 0.15);
    }

    .artist-main-row {
        display: flex;
        align-items: center;
        padding: var(--mobile-nav-item-padding);
        gap: 0.5rem;
        transition: background-color var(--transition-base);
        min-height: 44px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .artist-main-row:active {
        background: var(--mobile-nav-hover-bg);
    }

    /* === MOBILE EXPAND BUTTON === */
    .expand-btn {
        width: var(--mobile-nav-btn-size);
        height: var(--mobile-nav-btn-size);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 4px;
        color: var(--secondary-text-color);
        cursor: pointer;
        transition: var(--transition-base);
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        min-width: var(--mobile-nav-btn-size);
        min-height: var(--mobile-nav-btn-size);
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .expand-btn:active {
        background: rgba(255, 255, 255, 0.2);
        color: var(--primary-text-color);
        transform: scale(0.95);
        border-color: var(--accent-color);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.2);
    }

    .expand-btn.hidden {
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
    }

    .expand-btn svg,
    .dropdown-arrow {
        width: 16px;
        height: 16px;
        transition: transform var(--transition-base);
        stroke: currentColor;
        stroke-width: 2;
        fill: none;
        display: block;
        margin: auto;
    }

    .expand-btn[aria-expanded="true"] .dropdown-arrow {
        transform: rotate(180deg);
    }

    /* === MOBILE ARTIST AVATAR === */
    .artist-mini-avatar {
        width: var(--mobile-nav-avatar-size);
        height: var(--mobile-nav-avatar-size);
        border-radius: 50%;
        object-fit: cover;
        border: 2px solid rgba(255, 255, 255, 0.1);
        flex-shrink: 0;
        transition: var(--transition-base);
        image-rendering: -webkit-optimize-contrast;
        image-rendering: optimize-contrast;
    }

    .artist-main-row:active .artist-mini-avatar {
        border-color: var(--accent-color);
        transform: scale(1.05);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.2);
    }

    /* === MOBILE ARTIST NAME CONTAINER === */
    .artist-name-container {
        flex: 1;
        min-width: 0;
    }

    .artist-name-link {
        font-weight: 500;
        color: var(--primary-text-color);
        cursor: pointer;
        padding: 6px 4px;
        border-radius: 4px;
        transition: var(--transition-base);
        font-family: var(--font-primary);
        font-size: 0.85rem;
        text-decoration: none;
        display: flex;
        align-items: center;
        line-height: 1.2;
        min-height: 40px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .artist-name-link:active {
        color: var(--accent-color);
        background: rgba(29, 185, 84, 0.1);
        transform: translateX(2px);
    }

    .has-selected-album .artist-name-link {
        color: var(--accent-color);
    }

    /* === MOBILE ADD BUTTON === */
    .add-btn {
        width: var(--mobile-nav-btn-size);
        height: var(--mobile-nav-btn-size);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 4px;
        color: var(--secondary-text-color);
        font-size: 0.8rem;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition-base);
        flex-shrink: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--font-primary);
        min-width: var(--mobile-nav-btn-size);
        min-height: var(--mobile-nav-btn-size);
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .add-btn:active {
        background: var(--accent-color);
        border-color: var(--accent-color);
        color: var(--bg-color);
        transform: scale(0.95);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.3);
    }

    .add-btn.selected {
        background: var(--accent-color);
        border-color: var(--accent-color);
        color: var(--bg-color);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.3);
    }

    /* === MOBILE ALBUMS LIST === */
    .albums-list {
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        background: rgba(0, 0, 0, 0.2);
        scrollbar-width: thin;
        scrollbar-color: var(--accent-color) transparent;
    }

    .albums-list.expanded {
        max-height: 250px;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .albums-list::-webkit-scrollbar {
        width: 4px;
    }

    .albums-list::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.05);
        border-radius: 2px;
    }

    .albums-list::-webkit-scrollbar-thumb {
        background: var(--accent-color);
        border-radius: 2px;
    }

    /* === MOBILE ALBUM ITEM - ИСПРАВЛЕНО === */
    .album-item {
        display: flex;
        align-items: center;
        gap: 0.5rem; /* ← ИСПРАВЛЕНО: Уменьшили с 0.75rem до 0.5rem */
        padding: 0.5rem 0.8rem 0.5rem 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.02);
        transition: background-color var(--transition-base);
        min-height: 44px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .album-item:active {
        background: rgba(255, 255, 255, 0.05);
    }

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

    .album-item.currently-playing {
        background: linear-gradient(90deg, rgba(29, 185, 84, 0.15), transparent);
        border-left: 2px solid var(--accent-hover-color);
    }

    /* === MOBILE ALBUM COVER - ИСПРАВЛЕНО === */
    .album-cover-nav {
        width: var(--mobile-nav-album-cover-size);
        height: var(--mobile-nav-album-cover-size);
        border-radius: 6px;
        object-fit: cover;
        border: 1px solid rgba(255, 255, 255, 0.1);
        flex-shrink: 0;
        background-color: #333;
        transition: var(--transition-base);
        image-rendering: -webkit-optimize-contrast;
        image-rendering: optimize-contrast;
    }

    .album-cover-nav[data-s3-cover]:not([src*="amazonaws"]) {
        opacity: 0.7;
    }

    .album-item:active .album-cover-nav {
        border-color: var(--accent-color);
        transform: scale(1.05);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.2);
    }

    /* === MOBILE ALBUM INFO === */
    .album-info {
        flex: 1;
        min-width: 0;
    }

    .album-name-link {
        font-size: 0.8rem;
        font-weight: 500;
        cursor: pointer;
        color: var(--primary-text-color);
        display: flex;
        align-items: center;
        font-family: var(--font-primary);
        padding: 4px 0;
        text-decoration: none;
        line-height: 1.2;
        min-height: 40px;
        transition: color var(--transition-base);
        text-align: left;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .album-name-link:active {
        color: var(--accent-color);
    }

    .album-meta {
        font-size: 11px;
        color: var(--secondary-text-color);
        margin-top: 2px;
        font-family: var(--font-secondary);
        line-height: 1.2;
        text-align: left;
    }

    .album-item .add-btn {
        width: 24px;
        height: 24px;
        font-size: 0.7rem;
    }

    /* === MOBILE MENU FOOTER === */
    .menu-footer {
        position: sticky;
        bottom: 0;
        background: linear-gradient(135deg, #2a2a2a, #1a1a1a);
        border-top: 1px solid var(--mobile-nav-border);
        padding: var(--mobile-nav-padding);
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }

    .menu-footer-top {
        display: flex;
        justify-content: flex-start;
    }

    .menu-footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
    }

    /* === MOBILE MENU CONTROLS - ИСПРАВЛЕНО === */
    .menu-controls {
        display: flex;
        gap: var(--mobile-nav-gap);
        padding: 0;
        border: none;
        background: transparent;
        width: 100%;
    }

    .control-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 4px;
        padding: 8px 12px;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 6px;
        color: var(--primary-text-color);
        font-size: 10px;
        font-family: var(--font-secondary);
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition-base);
        white-space: nowrap;
        flex: 1;
        min-width: 0;
        min-height: 36px;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .control-btn:active {
        background: rgba(255, 255, 255, 0.2);
        transform: scale(0.98);
        border-color: var(--accent-color);
        box-shadow: 0 1px 4px rgba(29, 185, 84, 0.2);
    }

    .control-btn svg {
        flex-shrink: 0;
        width: 14px;
        height: 14px;
        fill: currentColor;
    }

    /* === MOBILE MIX COUNTER === */
    .mix-counter {
        font-size: 0.8rem;
        color: var(--secondary-text-color);
        font-family: var(--font-secondary);
        font-weight: 400;
        font-variant-numeric: tabular-nums;
        white-space: nowrap;
    }

    #selected-items-count {
        color: var(--accent-color);
        font-weight: 700;
    }

    /* === MOBILE MIX PLAY BUTTON - ИСПРАВЛЕНО === */
    .mix-play-btn {
        padding: 0.6rem 1.2rem;
        background: var(--accent-color);
        color: var(--bg-color);
        border: none;
        border-radius: 6px;
        font-weight: 700;
        font-family: var(--font-primary);
        cursor: pointer;
        transition: var(--transition-base);
        min-width: 80px;
        font-size: 0.8rem;
        min-height: 36px; /* ← ИСПРАВЛЕНО: Увеличили высоту главной кнопки */
        box-shadow: 0 2px 8px rgba(29, 185, 84, 0.2);
        flex-shrink: 0;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .mix-play-btn:active:not(:disabled) {
        background: var(--accent-hover-color);
        transform: scale(0.98);
        box-shadow: 0 2px 8px rgba(29, 185, 84, 0.3);
    }

    .mix-play-btn:disabled {
        background: rgba(255, 255, 255, 0.1);
        color: var(--secondary-text-color);
        cursor: not-allowed;
        transform: none;
        opacity: 0.5;
        box-shadow: none;
    }
}

/* === MOBILE SMALL SCREENS === */
@media (max-width: 480px) {
    :root {
        --mobile-nav-btn-size: 24px;
        --mobile-nav-avatar-size: 28px;
        --mobile-nav-album-cover-size: 36px;
        --mobile-nav-padding: 8px;
        --mobile-nav-gap: 6px;
        --mobile-nav-item-padding: 0.5rem 0.6rem;
    }

    .burger-btn {
        height: 32px;
        padding: 4px 8px;
        min-width: 60px;
    }

    .burger-icon {
        width: 12px;
        height: 8px;
    }

    .burger-btn.active .burger-icon {
        width: 12px;
        height: 12px;
    }

    .artist-name-link {
        font-size: 0.8rem;
        min-height: 36px;
    }

    .album-name-link {
        font-size: 0.75rem;
        min-height: 36px;
    }

    .album-meta {
        font-size: 10px;
    }

    .album-item {
        gap: 0.4rem; /* ← ИСПРАВЛЕНО: Еще меньше gap для маленьких экранов */
        padding: 0.4rem 0.6rem 0.4rem 1.5rem;
        min-height: 40px;
    }

    .control-btn {
        font-size: 9px;
        padding: 6px 8px;
        min-height: 32px;
    }

    .mix-play-btn {
        font-size: 0.75rem;
        padding: 0.5rem 1rem;
        min-height: 32px; /* ← ИСПРАВЛЕНО: Адаптивная высота главной кнопки */
        min-width: 70px;
    }

    .mix-counter {
        font-size: 0.75rem;
    }

    .control-btn svg {
        width: 12px;
        height: 12px;
    }

    .albums-list.expanded {
        max-height: 200px;
    }

    .album-item .add-btn {
        width: 20px;
        height: 20px;
        font-size: 0.65rem;
    }
}

/* === MOBILE ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
    .burger-btn,
    .burger-icon span,
    .expand-btn,
    .add-btn,
    .control-btn,
    .mix-play-btn,
    .artist-name-link,
    .album-name-link,
    .artist-mini-avatar,
    .album-cover-nav {
        transition: none;
        animation: none;
    }

    .burger-btn:active,
    .expand-btn:active,
    .add-btn:active,
    .control-btn:active,
    .mix-play-btn:active {
        transform: none;
    }

    .artist-main-row:active .artist-mini-avatar,
    .album-item:active .album-cover-nav {
        transform: none;
    }
}

@media (prefers-contrast: high) {
    .burger-btn,
    .expand-btn,
    .add-btn,
    .control-btn,
    .mix-play-btn {
        border: 2px solid currentColor;
    }
    
    .burger-menu-content {
        border: 2px solid var(--accent-color);
    }
}

/* === MOBILE COMPONENT ISOLATION === */
@media (max-width: 768px) {
    .burger-menu-content * {
        box-sizing: border-box;
    }

    .burger-menu-content a {
        color: inherit;
        text-decoration: none;
    }

    .burger-menu-content button {
        font-family: inherit;
    }

    /* Force visibility for navigation elements */
    .header-controls,
    .burger-menu-content,
    .menu-artists-section,
    .menu-artists-list,
    .menu-footer {
        display: flex;
        visibility: visible;
        opacity: 1;
    }

    .menu-artists-section {
        display: block;
    }

    /* === PERFORMANCE OPTIMIZATIONS === */
    .burger-menu-content {
        contain: layout style;
        will-change: transform, opacity;
    }

    .artist-mini-avatar,
    .album-cover-nav,
    .expand-btn,
    .add-btn {
        contain: layout style;
    }

    /* === LEGACY SUPPORT === */
    @supports not (backdrop-filter: blur(10px)) {
        .menu-footer {
            background: #2a2a2a;
        }
        
        .burger-menu-content {
            background: rgba(26, 26, 26, 0.98);
        }
    }
}