/**
 * Tavana Theme - Responsive Styles
 * 
 * Breakpoints:
 * - Mobile: max-width 639px
 * - Tablet: 640px - 1023px
 * - Desktop: min-width 1024px
 */

/* ========================================
   Mobile First Base (Default)
   ======================================== */

/* Container */
.container {
    padding-inline: var(--spacing-md);
}

/* Grid System */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }

/* Hide/Show Utilities */
.hide-mobile { display: none; }
.show-mobile { display: block; }
.show-mobile-flex { display: flex; }

.hide-tablet { display: block; }
.hide-desktop { display: block; }

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: var(--z-fixed);
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    text-decoration: none;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.mobile-nav-item.active,
.mobile-nav-item:hover {
    color: var(--primary);
}

/* Mobile Header */
.header-mobile {
    display: block;
}

.header-desktop {
    display: none;
}

/* Mobile Bottom Nav visible */
.mobile-bottom-nav {
    display: block;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu Drawer */
.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--bg-card);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.mobile-menu.active {
    transform: translateX(0);
}

/* Body padding for mobile nav */
body {
    padding-bottom: 70px;
}

/* ========================================
   Tablet (640px - 1023px)
   ======================================== */
@media (min-width: 640px) {
    .container {
        padding-inline: var(--spacing-lg);
    }
    
    /* Grid */
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    
    /* Hide/Show */
    .hide-tablet { display: none; }
    .show-tablet { display: block; }
    .show-tablet-flex { display: flex; }
    
    /* Spacing */
    .sm\:gap-3 { gap: var(--spacing-md); }
    .sm\:gap-4 { gap: var(--spacing-lg); }
    
    /* Typography */
    h1 { font-size: calc(var(--font-size-3xl) * 1.1); }
    h2 { font-size: calc(var(--font-size-2xl) * 1.1); }
    
    /* Cards Grid */
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .container {
        padding-inline: var(--spacing-xl);
    }
    
    /* Grid */
    .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .md\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    
    /* Hide/Show */
    .hide-mobile { display: block; }
    .hide-mobile-flex { display: flex; }
    .show-mobile { display: none; }
    .show-mobile-flex { display: none; }
    .hide-desktop { display: none; }
    .show-desktop { display: block; }
    .show-desktop-flex { display: flex; }
    
    /* Desktop Header */
    .header-desktop {
        display: block;
    }
    
    .header-mobile {
        display: none;
    }
    
    .header-desktop-wrapper {
        display: block;
    }
    
    .header-mobile-wrapper {
        display: none;
    }
    
    /* Hide Mobile Nav on Desktop */
    .mobile-bottom-nav {
        display: none;
    }
    
    /* Remove body padding */
    body {
        padding-bottom: 0;
    }
    
    /* Footer Grid */
    .footer-features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }
    
    .footer-bottom-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: right;
    }
    
    /* Desktop Navigation */
    .desktop-nav {
        display: flex;
        align-items: center;
        gap: var(--spacing-lg);
    }
    
    .desktop-nav-item {
        color: var(--text-primary);
        font-weight: 500;
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius);
        transition: background-color var(--transition-fast), color var(--transition-fast);
    }
    
    .desktop-nav-item:hover,
    .desktop-nav-item.active {
        background-color: var(--bg-hover);
        color: var(--primary);
    }
    
    /* Header Icons */
    .header-icons {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    /* Cards Grid */
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(6, 1fr);
    }
    
    /* Spacing */
    .md\:gap-4 { gap: var(--spacing-lg); }
    .md\:gap-5 { gap: var(--spacing-xl); }
    
    /* Two Column Layout */
    .two-column {
        display: grid;
        grid-template-columns: 280px 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Sidebar */
    .sidebar {
        position: sticky;
        top: 80px;
        height: fit-content;
    }
}

/* ========================================
   Large Desktop (1280px+)
   ======================================== */
@media (min-width: 1280px) {
    .container {
        max-width: 1230px;
    }
    
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
    
    .products-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* ========================================
   Touch Friendly (Mobile/Tablet)
   ======================================== */
@media (max-width: 1023px) {
    /* Larger touch targets */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .btn-icon {
        width: 44px;
        height: 44px;
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        min-height: 44px;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    /* Touch-friendly links */
    .nav-link,
    .mobile-nav-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    /* Swipeable cards */
    .swiper-slide {
        touch-action: pan-y;
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .mobile-nav,
    .header-mobile,
    .header-desktop,
    .btn,
    .mobile-menu,
    .mobile-menu-overlay {
        display: none !important;
    }
    
    body {
        padding: 0;
        background: white;
        color: black;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
}


/* ========================================
   Front Page Responsive
   ======================================== */

/* Mobile */
@media (max-width: 639px) {
    .hero-slide {
        min-height: 250px;
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-description {
        font-size: var(--font-size-sm);
    }
    
    .swiper-button-prev,
    .swiper-button-next {
        display: none;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
}

/* Tablet */
@media (min-width: 640px) and (max-width: 1023px) {
    .hero-slide {
        min-height: 350px;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .hero-slide {
        min-height: 450px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-content {
        padding: var(--spacing-2xl) 0;
    }
    
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .posts-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   Single Post Responsive
   ======================================== */

/* Mobile */
@media (max-width: 639px) {
    .single-post-title {
        font-size: var(--font-size-xl);
    }
    
    .author-box {
        flex-direction: column;
        text-align: center;
    }
    
    .author-box-avatar {
        margin: 0 auto;
    }
    
    .post-navigation {
        grid-template-columns: 1fr;
    }
    
    .nav-link.empty {
        display: none;
    }
    
    .single-post-footer {
        flex-direction: column;
    }
    
    .post-share {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Tablet and up */
@media (min-width: 640px) {
    .single-post-meta {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    
    .post-navigation {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-link.empty {
        display: block;
    }
    
    .single-post-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

/* ========================================
   Archive Page Responsive
   ======================================== */

/* Mobile */
@media (max-width: 639px) {
    .archive-title {
        font-size: var(--font-size-xl);
    }
    
    .archive-grid {
        grid-template-columns: 1fr;
    }
}

/* Tablet */
@media (min-width: 640px) and (max-width: 1023px) {
    .archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .archive-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Search Results Responsive
   ======================================== */

/* Mobile */
@media (max-width: 639px) {
    .search-title {
        flex-direction: column;
        font-size: var(--font-size-lg);
    }
    
    .search-form .search-input-wrapper {
        flex-direction: column;
    }
    
    .search-form .search-input {
        border-radius: var(--radius);
        margin-bottom: var(--spacing-sm);
    }
    
    .search-form .search-submit {
        border-radius: var(--radius);
        width: 100%;
    }
    
    .search-result-item {
        flex-direction: column-reverse;
    }
    
    .result-thumbnail {
        width: 100%;
    }
    
    .result-img {
        max-width: 100%;
    }
}

/* Tablet and up */
@media (min-width: 640px) {
    .search-result-item {
        flex-direction: row;
    }
    
    .result-thumbnail {
        width: 200px;
    }
}

/* ========================================
   404 Page Responsive
   ======================================== */

/* Mobile */
@media (max-width: 639px) {
    .error-number .digit {
        font-size: 60px;
    }
    
    .error-number .zero {
        width: 60px;
        height: 60px;
    }
    
    .gear-icon {
        width: 60px;
        height: 60px;
    }
    
    .error-title {
        font-size: var(--font-size-xl);
    }
    
    .error-actions {
        flex-direction: column;
    }
    
    .error-actions .btn {
        width: 100%;
    }
}

/* Tablet and up */
@media (min-width: 640px) {
    .error-number .digit {
        font-size: 100px;
    }
    
    .error-number .zero {
        width: 100px;
        height: 100px;
    }
    
    .gear-icon {
        width: 100px;
        height: 100px;
    }
}