/* ===== MOBILE FOOTER ===== */
/* Mobile-specific footer styles */

/* Base mobile footer */
@media (max-width: 768px) {
    .footer {
        padding: var(--spacing-sm) !important;
        height: var(--mobile-footer-height) !important;
        position: fixed !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        z-index: 999999 !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        background: var(--color-bg-elevated) !important;
        border-top: 1px solid var(--color-border-accent) !important;
        backdrop-filter: blur(20px) !important;
        -webkit-backdrop-filter: blur(20px) !important;
        transform: translateZ(0) !important;
        backface-visibility: hidden !important;
        -webkit-backface-visibility: hidden !important;
    }

    .footer::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--gradient-subtle);
        opacity: 0.2;
        z-index: -1;
        transform: translateZ(0);
    }
    
    .footer-content {
        display: flex;
        justify-content: space-around;
        align-items: center;
        max-width: 500px;
        width: 100%;
        margin: 0 auto;
        transform: translateZ(0);
    }
    
    .footer-tab {
        min-width: 45px;
        padding: var(--spacing-xs);
        border-radius: var(--radius-md);
        transition: all 0.2s ease;
        transform: translateZ(0);
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }

    .footer-tab::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--gradient-primary);
        opacity: 0;
        border-radius: var(--radius-md);
        transition: var(--transition-fast);
        z-index: -1;
        transform: translateZ(0);
    }

    .footer-tab:hover {
        color: var(--color-text-primary);
        background: var(--color-bg-tertiary);
        transform: translateZ(0) translateY(-1px);
    }

    .footer-tab:hover::before {
        opacity: 0.05;
    }

    .footer-tab:active {
        transform: translateZ(0) scale(0.98);
    }

    .footer-tab.active {
        color: var(--color-primary);
        background: var(--color-primary-light);
        transform: translateZ(0) translateY(-1px);
    }

    .footer-tab.active::before {
        opacity: 0.1;
    }

    .footer-tab.active::after {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 3px;
        height: 3px;
        background: var(--color-primary);
        border-radius: 50%;
        box-shadow: 0 0 4px var(--color-primary);
    }
    
    .footer-tab-icon {
        font-size: var(--font-size-base);
        margin-bottom: 2px;
        transform: translateZ(0);
    }
    
    .footer-tab-label {
        font-size: 9px;
        font-weight: 600;
        letter-spacing: 0.5px;
    }
    
    .footer-tab-count {
        width: 14px;
        height: 14px;
        font-size: 8px;
        top: 2px;
        right: 2px;
        transform: translateZ(0);
    }
    
    .collections-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        transform: translateZ(0);
    }
    
    .collection-card {
        transform: translateZ(0);
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }

    .collection-card:hover {
        transform: translateZ(0) scale(1.02);
    }

    .collection-card:active {
        transform: translateZ(0) scale(0.98);
    }
    
    .collection-card img {
        height: 180px;
        transform: translateZ(0);
    }
    
    .collection-info {
        padding: var(--spacing-md);
    }
    
    .collections-panel {
        bottom: var(--mobile-footer-height) !important;
        transform: translateX(100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
    }

    .collections-panel.active {
        transform: translateX(0);
    }
    
    .collections-content {
        height: calc(100vh - var(--mobile-footer-height) - 40px) !important;
        padding: var(--spacing-md);
        transform: translateZ(0);
    }
    
    .collections-header {
        padding: var(--spacing-md);
        background: var(--color-bg-elevated);
        border-bottom: 1px solid var(--color-border);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    .collections-header h2 {
        font-size: var(--font-size-lg);
    }
    
    .collections-empty {
        padding: var(--spacing-2xl);
    }
    
    .collections-empty-icon {
        font-size: 3rem;
    }
}

/* Small mobile footer */
@media (max-width: 480px) {
    .footer {
        padding: var(--spacing-xs) !important;
        height: 60px !important;
    }
    
    .footer-tab-label {
        display: none;
    }
    
    .footer-tab {
        min-width: 40px;
        padding: var(--spacing-xs);
        flex-direction: row;
        justify-content: center;
    }
    
    .footer-tab-icon {
        font-size: var(--font-size-lg);
        margin-bottom: 0;
    }
    
    .footer-tab-count {
        width: 12px;
        height: 12px;
        font-size: 7px;
        top: 4px;
        right: 4px;
    }
    
    .collections-grid {
        grid-template-columns: repeat(1, 1fr);
        gap: var(--spacing-sm);
        max-width: 320px;
        margin: 0 auto;
    }
    
    .collection-card img {
        height: 200px;
    }
    
    .collection-info {
        padding: var(--spacing-sm);
    }
    
    .collections-panel {
        bottom: 60px !important;
    }
    
    .collections-content {
        height: calc(100vh - 120px) !important;
        padding: var(--spacing-sm);
    }
    
    .collections-header {
        padding: var(--spacing-sm);
    }
    
    .collections-header h2 {
        font-size: var(--font-size-base);
    }
    
    .collections-empty {
        padding: var(--spacing-xl);
    }
    
    .collections-empty-icon {
        font-size: 2.5rem;
    }
}

/* Chat list mobile styles */
@media (max-width: 768px) {
    .chat-item {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
        min-height: 80px;
        border-radius: var(--radius-md);
    }
    
    .chat-avatar {
        width: 50px;
        height: 50px;
        border-radius: var(--radius-md);
    }
    
    .chat-avatar-fallback {
        width: 50px;
        height: 50px;
        font-size: 20px;
        border-radius: var(--radius-md);
    }
    
    .chat-last-message {
        max-width: 180px;
        font-size: var(--font-size-sm);
    }
    
    .chat-name {
        font-size: var(--font-size-base);
        font-weight: 600;
    }
    
    .chat-timestamp {
        font-size: var(--font-size-xs);
    }
}

/* Swipe animation mobile */
@media (max-width: 768px) {
    .app {
        transition: transform 0.25s ease-out;
        transform-origin: center center;
        position: relative !important;
        z-index: 1 !important;
        isolation: isolate;
        will-change: transform;
        backface-visibility: hidden;
        -webkit-backface-visibility: hidden;
        transform-style: preserve-3d;
        -webkit-transform-style: preserve-3d;
    }

    .app.swiping-left {
        transform: translateX(-100%);
    }

    .app.swiping-right {
        transform: translateX(100%);
    }
}

/* Footer tab interactions */
@media (max-width: 768px) {
    .footer-tab:active {
        transform: scale(0.95);
        background: var(--color-bg-tertiary);
    }
    
    .footer-tab.active {
        background: var(--color-primary);
        color: var(--color-text-inverse);
    }
    
    .footer-tab.active .footer-tab-icon {
        transform: scale(1.1);
    }
    
    .footer-tab.active .footer-tab-count {
        background: var(--color-text-inverse);
        color: var(--color-primary);
    }
}

/* Collections panel mobile */
@media (max-width: 768px) {
    .collections-panel {
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        background: var(--color-bg-primary);
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
    }
    
    .collections-panel.active {
        animation: slideUpMobile 0.3s ease-out;
    }
    
    .collections-header {
        border-bottom: 1px solid var(--color-border);
        position: sticky;
        top: 0;
        background: var(--color-bg-primary);
        z-index: 10;
    }
    
    .collections-content {
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .collection-card {
        border-radius: var(--radius-lg);
        overflow: hidden;
    }
    
    .collection-card:active {
        transform: scale(0.98);
    }
    
    .collection-chat-btn {
        min-height: var(--mobile-touch-target-size);
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        border-radius: var(--radius-md);
    }
    
    .collection-clear-btn {
        min-width: var(--mobile-touch-target-size);
        min-height: var(--mobile-touch-target-size);
        border-radius: var(--radius-md);
    }
}

@keyframes slideUpMobile {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Footer accessibility */
@media (max-width: 768px) {
    .footer-tab:focus {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }
    
    .collection-card:focus {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }
}

/* Dark theme mobile footer */
@media (max-width: 768px) {
    [data-theme="dark"] .footer {
        background: var(--color-bg-elevated) !important;
        border-top-color: var(--color-border-accent) !important;
    }
    
    [data-theme="dark"] .footer-tab.active {
        background: var(--color-primary);
        color: var(--color-text-inverse);
    }
    
    [data-theme="dark"] .collections-panel {
        background: var(--color-bg-secondary);
        border-top: 1px solid var(--color-border-accent);
    }
    
    [data-theme="dark"] .collections-header {
        background: var(--color-bg-secondary);
        border-bottom-color: var(--color-border-accent);
    }
}

/* Safe area insets for mobile */
@media (max-width: 768px) {
    .footer {
        padding-bottom: calc(var(--spacing-sm) + var(--mobile-safe-area-bottom)) !important;
        padding-left: calc(var(--spacing-sm) + var(--mobile-safe-area-left)) !important;
        padding-right: calc(var(--spacing-sm) + var(--mobile-safe-area-right)) !important;
    }
    
    .collections-panel {
        bottom: calc(var(--mobile-footer-height) + var(--mobile-safe-area-bottom)) !important;
    }
}