/* ============================================================================
   COMPREHENSIVE MOBILE RESPONSIVE ENHANCEMENTS
   Hoshiya.shop - Mobile-First Responsive Design
   ============================================================================ */

/* --- Mobile Viewport & Base Settings --- */
@viewport {
    width: device-width;
    zoom: 1.0;
}

/* Prevent text size adjustment on orientation change */
html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Smooth scrolling for mobile */
html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* ============================================================================
   MOBILE TYPOGRAPHY IMPROVEMENTS
   ============================================================================ */

@media (max-width: 768px) {
    /* Better readability on mobile */
    body {
        font-size: 16px;
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    
    h1 { font-size: 28px; line-height: 1.2; }
    h2 { font-size: 24px; line-height: 1.3; }
    h3 { font-size: 20px; line-height: 1.4; }
    h4 { font-size: 18px; line-height: 1.4; }
    h5, h6 { font-size: 16px; line-height: 1.4; }
    
    p { font-size: 15px; line-height: 1.6; margin-bottom: 16px; }
}

@media (max-width: 480px) {
    h1 { font-size: 24px; }
    h2 { font-size: 22px; }
    h3 { font-size: 19px; }
}

/* ============================================================================
   TOUCH-FRIENDLY INTERACTIONS
   ============================================================================ */

@media (max-width: 768px) {
    /* Minimum touch target size (44x44px recommended) */
    button, 
    a.btn, 
    .nav-link, 
    .cart-btn, 
    .theme-btn, 
    .menu-toggle,
    input[type="button"],
    input[type="submit"] {
        min-height: 44px;
        min-width: 44px;
        padding: 12px 20px;
    }
    
    /* Better spacing for touch targets */
    .nav-link {
        padding: 14px 20px;
        font-size: 17px;
    }
    
    /* Prevent accidental touches */
    button, a {
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    }
    
    /* Disable hover states on touch devices */
    @media (hover: none) {
        *:hover {
            transition: none !important;
        }
    }
}

/* ============================================================================
   MOBILE HEADER & NAVIGATION ENHANCEMENTS
   ============================================================================ */

@media (max-width: 768px) {
    .header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: #fff;
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }
    
    .navbar {
        padding: 12px 0;
    }
    
    .navbar .container {
        padding: 0 16px;
    }
    
    .logo {
        font-size: 24px;
        padding: 8px 0;
    }
    
    /* Mobile menu improvements */
    .nav-menu {
        max-height: calc(100vh - 80px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-menu.open {
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    /* Mobile search */
    .search-wrap {
        width: 100%;
        max-width: 100%;
        margin: 12px 0 !important;
    }
    
    .search-input {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 12px 45px 12px 16px;
    }
}

/* ============================================================================
   MOBILE HERO SECTION
   ============================================================================ */

@media (max-width: 768px) {
    .hero {
        padding: 40px 0 60px;
        min-height: auto;
    }
    
    .hero-content {
        gap: 30px;
    }
    
    .hero-title {
        font-size: 28px;
        line-height: 1.2;
        margin-bottom: 16px;
    }
    
    .title-main {
        font-size: 26px !important;
    }
    
    .hero-subtitle {
        font-size: 14px;
        line-height: 1.5;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        font-size: 16px;
    }
    
    .hero-visual {
        max-width: 100%;
    }
    
    .manga-panel {
        height: 300px;
    }
    
    /* Reduce animation complexity on mobile */
    .sound-effect,
    .floating-sfx {
        font-size: 16px;
    }
    
    /* Ensure smooth, natural animation speeds */
    .sound-effect,
    .floating-sfx,
    .floating-star {
        animation-duration: 3s !important;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 30px 0 50px;
    }
    
    .hero-title {
        font-size: 24px;
    }
    
    .title-main {
        font-size: 22px !important;
    }
    
    .manga-panel {
        height: 250px;
    }
}

/* ============================================================================
   MOBILE PRODUCT GRIDS & CARDS
   ============================================================================ */

@media (max-width: 768px) {
    .tiles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 0;
    }
    
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .collab-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .product-card {
        border-width: 2px;
        border-radius: 12px;
        box-shadow: 4px 4px 0 0 var(--primary-black);
    }
    
    .product-card:hover {
        transform: translateY(-2px);
        box-shadow: 5px 5px 0 0 var(--primary-black);
    }
    
    .product-image {
        height: 200px !important;
    }
    
    .product-name {
        font-size: 15px;
        line-height: 1.3;
    }
    
    .product-price {
        font-size: 16px;
    }
    
    .product-footer .btn {
        font-size: 14px;
        padding: 10px 16px;
    }
}

@media (max-width: 480px) {
    .tiles-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .featured-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .product-image {
        height: 240px !important;
    }
}

/* ============================================================================
   MOBILE SECTIONS & SPACING
   ============================================================================ */

@media (max-width: 768px) {
    section {
        padding: 50px 0;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .section-header {
        margin-bottom: 30px;
        text-align: center;
    }
    
    .section-title {
        font-size: 26px;
        margin-bottom: 12px;
    }
    
    .title-text {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    section {
        padding: 40px 0;
    }
    
    .container {
        padding: 0 14px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .title-text {
        font-size: 20px;
    }
}

/* ============================================================================
   MOBILE FORMS & INPUTS
   ============================================================================ */

@media (max-width: 768px) {
    input, 
    textarea, 
    select {
        font-size: 16px !important; /* Prevents iOS zoom */
        padding: 14px 16px;
        border-radius: 8px;
    }
    
    textarea {
        min-height: 120px;
    }
    
    .newsletter-panel {
        padding: 30px 20px;
    }
    
    .newsletter-form {
        flex-direction: column;
        gap: 12px;
    }
    
    .newsletter-form input {
        width: 100%;
    }
    
    .newsletter-form button {
        width: 100%;
        padding: 14px;
    }
}

/* ============================================================================
   MOBILE CART
   ============================================================================ */

@media (max-width: 768px) {
    .cart-panel {
        width: 100%;
        max-width: 100%;
        right: -100%;
        border-left: none;
        border-top: 3px solid var(--primary-black);
    }
    
    .cart-panel.open {
        right: 0;
    }
    
    .cart-header {
        padding: 16px;
        position: sticky;
        top: 0;
        background: var(--primary-white);
        z-index: 10;
    }
    
    .cart-items {
        padding: 16px;
    }
    
    .cart-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 16px;
    }
    
    .cart-item-image {
        width: 100%;
        height: 200px;
    }
    
    .cart-footer {
        padding: 20px 16px;
        position: sticky;
        bottom: 0;
        background: var(--primary-white);
    }
}

/* ============================================================================
   MOBILE FOOTER
   ============================================================================ */

@media (max-width: 768px) {
    .footer {
        padding: 50px 0 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-col h4 {
        font-size: 18px;
        margin-bottom: 16px;
    }
    
    .footer-col ul {
        gap: 10px;
    }
    
    .footer-col a {
        font-size: 15px;
    }
    
    .footer-bottom {
        margin-top: 30px;
        padding-top: 20px;
        text-align: center;
    }
}

/* ============================================================================
   MOBILE LOADING SCREEN
   ============================================================================ */

@media (max-width: 768px) {
    .loading-screen {
        padding: 20px;
    }
    
    .loader-stage {
        max-width: 100%;
        padding: 30px 20px;
    }
    
    .tc-wordmark {
        font-size: 32px;
    }
    
    .tc-tagline {
        font-size: 12px;
    }
    
    .loader-skip {
        bottom: 30px;
        right: 20px;
        padding: 10px 18px;
        font-size: 13px;
    }
}

/* ============================================================================
   MOBILE CAROUSEL/SLIDER
   ============================================================================ */

@media (max-width: 768px) {
    .carousel {
        grid-auto-columns: 85%;
        gap: 16px;
        padding: 0 16px;
    }
    
    .carousel .product-card {
        min-width: 280px;
    }
    
    /* Add scroll snap for better swiping */
    .carousel {
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
    }
    
    .carousel .product-card {
        scroll-snap-align: start;
    }
}

@media (max-width: 480px) {
    .carousel {
        grid-auto-columns: 90%;
        gap: 12px;
    }
    
    .carousel .product-card {
        min-width: 260px;
    }
}

/* ============================================================================
   MOBILE UTILITY CLASSES
   ============================================================================ */

@media (max-width: 768px) {
    .hide-mobile {
        display: none !important;
    }
    
    .show-mobile {
        display: block !important;
    }
    
    .text-center-mobile {
        text-align: center !important;
    }
    
    .full-width-mobile {
        width: 100% !important;
    }
}

/* ============================================================================
   MOBILE PERFORMANCE OPTIMIZATIONS
   ============================================================================ */

@media (max-width: 768px) {
    /* Smooth, natural animation speeds for mobile */
    .nav-menu {
        transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .menu-toggle span {
        transition: all 0.3s ease;
    }
    
    button, .btn {
        transition: all 0.25s ease;
    }
    
    .product-card {
        transition: transform 0.3s ease, box-shadow 0.2s ease;
    }
    
    /* Disable parallax and complex animations on mobile */
    .speed-lines,
    .action-lines {
        display: none;
    }
    
    /* Optimize images for mobile */
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
}

/* ============================================================================
   MOBILE ACCESSIBILITY IMPROVEMENTS
   ============================================================================ */

@media (max-width: 768px) {
    /* Better focus states for keyboard navigation */
    *:focus {
        outline: 2px solid #000;
        outline-offset: 2px;
    }
    
    /* Skip to content link for mobile */
    .skip-to-content {
        position: absolute;
        top: -40px;
        left: 0;
        background: #000;
        color: #fff;
        padding: 8px 16px;
        text-decoration: none;
        z-index: 100;
    }
    
    .skip-to-content:focus {
        top: 0;
    }
}

/* ============================================================================
   LANDSCAPE MOBILE OPTIMIZATIONS
   ============================================================================ */

@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 30px 0;
        min-height: auto;
    }
    
    .manga-panel {
        height: 250px;
    }
    
    .nav-menu {
        max-height: 60vh;
    }
}

/* ============================================================================
   TABLET OPTIMIZATIONS (600px - 900px)
   ============================================================================ */

@media (min-width: 601px) and (max-width: 900px) {
    .tiles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .featured-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .collab-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .product-image {
        height: 240px !important;
    }
}

/* ============================================================================
   SMALL MOBILE DEVICES (<375px)
   ============================================================================ */

@media (max-width: 374px) {
    .hero-title {
        font-size: 20px;
    }
    
    .title-main {
        font-size: 19px !important;
    }
    
    .btn {
        padding: 12px 16px;
        font-size: 14px;
    }
    
    .product-name {
        font-size: 14px;
    }
    
    .section-title {
        font-size: 20px;
    }
}

/* ============================================================================
   DARK MODE MOBILE ADJUSTMENTS
   ============================================================================ */

@media (max-width: 768px) {
    .dark-mode .header {
        background: #111;
        box-shadow: 0 2px 8px rgba(255,255,255,0.05);
    }
    
    .dark-mode .nav-menu {
        background: #111;
        border-bottom-color: #333;
    }
    
    .dark-mode .cart-panel {
        background: #111;
        border-top-color: #fff;
    }
}

/* ============================================================================
   MOBILE SAFE AREAS (iPhone Notch Support)
   ============================================================================ */

@supports (padding: max(0px)) {
    @media (max-width: 768px) {
        .header {
            padding-left: max(16px, env(safe-area-inset-left));
            padding-right: max(16px, env(safe-area-inset-right));
        }
        
        .footer {
            padding-left: max(16px, env(safe-area-inset-left));
            padding-right: max(16px, env(safe-area-inset-right));
            padding-bottom: max(30px, env(safe-area-inset-bottom));
        }
        
        .cart-panel {
            padding-bottom: max(20px, env(safe-area-inset-bottom));
        }
    }
}

/* ============================================================================
   TOUCH FEEDBACK & INTERACTIONS
   ============================================================================ */

@media (max-width: 768px) {
    /* Touch active state */
    .touch-active {
        opacity: 0.7;
        transform: scale(0.98);
        transition: all 0.1s ease;
    }
    
    /* Button touch feedback */
    button.touch-active,
    .btn.touch-active {
        opacity: 0.8;
        transform: translateY(2px);
    }
    
    /* Product card touch feedback */
    .product-card.touch-active {
        transform: translateY(2px);
        box-shadow: 3px 3px 0 0 var(--primary-black);
    }
}

/* ============================================================================
   MENU OPEN STATE (BODY)
   ============================================================================ */

@media (max-width: 768px) {
    body.menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }
    
    body.menu-open .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        z-index: 999;
    }
    
    body.menu-open.dark-mode .nav-menu {
        background: rgba(17, 17, 17, 0.98);
    }
}

/* ============================================================================
   MOBILE MENU TOGGLE ANIMATION
   ============================================================================ */

@media (max-width: 768px) {
    .menu-toggle {
        position: relative;
        width: 44px;
        height: 44px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        cursor: pointer;
        border: none;
        background: transparent;
    }
    
    .menu-toggle span {
        width: 24px;
        height: 2px;
        background: var(--primary-black);
        border-radius: 2px;
        transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }
    
    .dark-mode .menu-toggle span {
        background: var(--primary-white);
    }
    
    /* Animated hamburger to X */
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translateY(7px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(-20px);
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translateY(-7px);
    }
}

/* ============================================================================
   REDUCED MOTION SUPPORT
   ============================================================================ */

@media (max-width: 768px) {
    .reduce-motion *,
    .reduce-motion *::before,
    .reduce-motion *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================================================
   SLOW CONNECTION OPTIMIZATIONS
   ============================================================================ */

@media (max-width: 768px) {
    .slow-connection * {
        animation: none !important;
        transition: none !important;
    }
    
    .slow-connection img {
        background: #f0f0f0;
    }
}

/* ============================================================================
   MOBILE SKELETON LOADING STATES
   ============================================================================ */

@media (max-width: 768px) {
    .skeleton {
        background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
        background-size: 200% 100%;
        animation: skeleton-loading 1.5s ease-in-out infinite;
    }
    
    @keyframes skeleton-loading {
        0% { background-position: 200% 0; }
        100% { background-position: -200% 0; }
    }
}

/* ============================================================================
   MOBILE-SPECIFIC UTILITY CLASSES
   ============================================================================ */

@media (max-width: 768px) {
    .mobile-only {
        display: block !important;
    }
    
    .mobile-hidden {
        display: none !important;
    }
    
    .mobile-text-sm {
        font-size: 14px !important;
    }
    
    .mobile-text-base {
        font-size: 16px !important;
    }
    
    .mobile-text-lg {
        font-size: 18px !important;
    }
    
    .mobile-p-sm {
        padding: 8px !important;
    }
    
    .mobile-p-md {
        padding: 16px !important;
    }
    
    .mobile-p-lg {
        padding: 24px !important;
    }
    
    .mobile-mt-sm {
        margin-top: 8px !important;
    }
    
    .mobile-mt-md {
        margin-top: 16px !important;
    }
    
    .mobile-mt-lg {
        margin-top: 24px !important;
    }
}

/* ============================================================================
   MOBILE STICKY ELEMENTS
   ============================================================================ */

@media (max-width: 768px) {
    .mobile-sticky {
        position: sticky;
        top: 60px;
        z-index: 10;
    }
    
    .mobile-sticky-bottom {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 100;
        background: var(--primary-white);
        border-top: 2px solid var(--primary-black);
        padding: 12px 16px;
        box-shadow: 0 -4px 12px rgba(0,0,0,0.1);
    }
}

/* ============================================================================
   MOBILE OVERLAY & MODALS
   ============================================================================ */

@media (max-width: 768px) {
    .mobile-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 998;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }
    
    .mobile-overlay.active {
        opacity: 1;
        pointer-events: auto;
    }
}

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

@media (max-width: 768px) {
    .pull-to-refresh {
        position: fixed;
        top: -50px;
        left: 50%;
        transform: translateX(-50%);
        padding: 10px 20px;
        background: var(--primary-black);
        color: var(--primary-white);
        border-radius: 20px;
        font-size: 14px;
        transition: top 0.3s ease;
        z-index: 1001;
    }
    
    .pull-to-refresh.active {
        top: 70px;
    }
}

/* ============================================================================
   MOBILE BOTTOM NAVIGATION (IF NEEDED)
   ============================================================================ */

@media (max-width: 768px) {
    .bottom-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--primary-white);
        border-top: 2px solid var(--primary-black);
        display: flex;
        justify-content: space-around;
        padding: 8px 0;
        padding-bottom: max(8px, env(safe-area-inset-bottom));
        z-index: 100;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
    }
    
    .bottom-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 8px 12px;
        text-decoration: none;
        color: var(--primary-black);
        font-size: 11px;
        min-width: 60px;
        transition: all 0.2s ease;
    }
    
    .bottom-nav-item.active {
        color: #000;
        font-weight: 700;
    }
    
    .bottom-nav-item svg {
        width: 24px;
        height: 24px;
    }
}