/* ========================================================================
   PREMIUM MOBILE OPTIMIZATIONS - 2025 DESIGN
   Touch-friendly interactions and mobile-first responsive design
   ======================================================================== */

/* ========================================================================
   MOBILE-FIRST TOUCH TARGETS
   ======================================================================== */

/* Ensure all interactive elements are at least 44x44px (Apple guidelines) */
@media (max-width: 768px) {
    button,
    .btn-premium,
    .btn-book-service,
    .btn-show-more,
    a.nav-link-premium {
        min-height: 44px;
        min-width: 44px;
    }

    /* Touch-friendly spacing */
    .service-card-premium {
        padding: var(--spacing-4);
        margin-bottom: var(--spacing-3);
    }

    .specialist-card-premium {
        padding: var(--spacing-3);
        min-height: 120px;
    }
}

/* ========================================================================
   MOBILE NAVIGATION
   ======================================================================== */

.mobile-nav-premium {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: white;
    box-shadow: var(--shadow-2xl);
    z-index: var(--z-modal);
    transition: left var(--transition-base);
    overflow-y: auto;
}

.mobile-nav-premium.open {
    left: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3);
    border-bottom: 2px solid var(--color-gray-100);
}

.mobile-nav-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.mobile-nav-close:hover {
    background: var(--color-gray-200);
}

.mobile-nav-links {
    padding: var(--spacing-3);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-1);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    transition: all var(--transition-base);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--color-primary-50);
    color: var(--color-primary-700);
}

.mobile-nav-link i {
    font-size: var(--text-xl);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.mobile-nav-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

/* ========================================================================
   BOTTOM SHEET MODALS
   ======================================================================== */

.bottom-sheet {
    position: fixed;
    bottom: -100%;
    left: 0;
    right: 0;
    background: white;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
    z-index: var(--z-modal);
    transition: bottom var(--transition-base);
    max-height: 90vh;
    overflow-y: auto;
}

.bottom-sheet.open {
    bottom: 0;
}

.bottom-sheet-handle {
    width: 48px;
    height: 4px;
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
    margin: var(--spacing-2) auto;
}

.bottom-sheet-header {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 2px solid var(--color-gray-100);
}

.bottom-sheet-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin: 0;
}

.bottom-sheet-body {
    padding: var(--spacing-4);
}

.bottom-sheet-footer {
    padding: var(--spacing-4);
    border-top: 2px solid var(--color-gray-100);
    background: var(--color-gray-50);
}

/* ========================================================================
   SWIPE GESTURES FOR GALLERIES
   ======================================================================== */

.swipeable-gallery {
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
}

.swipeable-gallery::-webkit-scrollbar {
    display: none;
}

.swipeable-gallery-item {
    scroll-snap-align: start;
    scroll-snap-stop: always;
}

/* Gallery Indicators */
.gallery-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-1);
    padding: var(--spacing-2);
}

.gallery-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-gray-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.gallery-indicator.active {
    width: 24px;
    background: var(--color-primary-500);
}

/* ========================================================================
   FLOATING ACTION BUTTON (FAB)
   ======================================================================== */

.fab-premium {
    position: fixed;
    bottom: var(--spacing-3);
    right: var(--spacing-3);
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-600) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.fab-premium:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.fab-premium:active {
    transform: scale(0.95);
}

/* Extended FAB */
.fab-extended {
    width: auto;
    padding: 0 var(--spacing-4);
    border-radius: var(--radius-full);
    gap: var(--spacing-2);
}

.fab-extended span {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
}

/* ========================================================================
   STICKY BOOKING BAR (Mobile)
   ======================================================================== */

.sticky-booking-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    padding: var(--spacing-3);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.1);
    z-index: var(--z-sticky);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.sticky-booking-bar.visible {
    transform: translateY(0);
}

.sticky-booking-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
    max-width: 1200px;
    margin: 0 auto;
}

.sticky-booking-info {
    flex: 1;
}

.sticky-booking-price {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary-600);
}

.sticky-booking-label {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.sticky-booking-btn {
    padding: var(--spacing-3) var(--spacing-5);
}

/* ========================================================================
   PULL TO REFRESH INDICATOR
   ======================================================================== */

.pull-to-refresh {
    position: absolute;
    top: -60px;
    left: 0;
    right: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-600);
    transition: transform var(--transition-base);
}

.pull-to-refresh.active {
    transform: translateY(60px);
}

.pull-to-refresh i {
    font-size: var(--text-2xl);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ========================================================================
   TOUCH RIPPLE EFFECT
   ======================================================================== */

.touch-ripple {
    position: relative;
    overflow: hidden;
}

.touch-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    opacity: 0;
    pointer-events: none;
    transition: width 0.5s, height 0.5s, opacity 0.5s;
}

.touch-ripple:active::after {
    width: 200px;
    height: 200px;
    opacity: 1;
    transition: 0s;
}

/* ========================================================================
   MOBILE CARD STACKING
   ======================================================================== */

@media (max-width: 768px) {
    .services-grid-premium {
        grid-template-columns: 1fr;
    }

    .service-card-premium {
        border-radius: var(--radius-lg);
        margin-bottom: var(--spacing-2);
    }

    /* Optimize image sizes */
    .review-avatar img {
        width: 48px;
        height: 48px;
    }

    .specialist-avatar-premium {
        width: 56px;
        height: 56px;
    }

    /* Larger touch targets for filters */
    .filter-chip {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--text-base);
    }
}

/* ========================================================================
   HORIZONTAL SCROLL CONTAINERS
   ======================================================================== */

.horizontal-scroll {
    display: flex;
    gap: var(--spacing-2);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-2);
}

.horizontal-scroll::-webkit-scrollbar {
    display: none;
}

.horizontal-scroll-item {
    flex: 0 0 auto;
    scroll-snap-align: start;
}

/* ========================================================================
   HAPTIC FEEDBACK SIMULATION
   ======================================================================== */

@media (hover: none) {
    /* For touch devices */
    .btn-premium:active,
    .btn-book-service:active,
    .specialist-card-premium:active {
        transform: scale(0.98);
        transition: transform 0.1s;
    }
}

/* ========================================================================
   SAFE AREA INSETS (iPhone Notch Support)
   ======================================================================== */

@supports (padding: max(0px)) {
    .header-premium,
    .sticky-booking-bar {
        padding-left: max(var(--spacing-3), env(safe-area-inset-left));
        padding-right: max(var(--spacing-3), env(safe-area-inset-right));
    }

    .sticky-booking-bar {
        padding-bottom: max(var(--spacing-3), env(safe-area-inset-bottom));
    }

    .fab-premium {
        bottom: max(var(--spacing-3), env(safe-area-inset-bottom));
        right: max(var(--spacing-3), env(safe-area-inset-right));
    }
}

/* ========================================================================
   MOBILE TYPOGRAPHY SCALING
   ======================================================================== */

@media (max-width: 480px) {
    .heading-1 { font-size: var(--text-4xl); }
    .heading-2 { font-size: var(--text-3xl); }
    .heading-3 { font-size: var(--text-2xl); }
    .heading-4 { font-size: var(--text-xl); }
    .heading-5 { font-size: var(--text-lg); }

    .service-name-premium {
        font-size: var(--text-lg);
    }

    .price-amount {
        font-size: var(--text-xl);
    }
}

/* ========================================================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================================================== */

/* Focus visible for keyboard navigation */
.btn-premium:focus-visible,
.input-premium:focus-visible,
.specialist-card-premium:focus-visible {
    outline: 3px solid var(--color-primary-400);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-premium,
    .service-card-premium,
    .review-card-premium {
        border-width: 3px;
    }

    .nav-link-premium::after {
        height: 3px;
    }
}

/* Dark mode support (for future) */
@media (prefers-color-scheme: dark) {
    :root {
        --color-gray-50: #1f2937;
        --color-gray-100: #374151;
        --color-gray-800: #f3f4f6;
        --color-gray-900: #f9fafb;
    }
}