/* ============================================
   Silent Auction Gallery - Responsive Styles
   Mobile-First Responsive Design
   ============================================ */

/* ===== Mobile First Breakpoints ===== */
/* Base (mobile): 0px - 640px */
/* Small (tablet): 641px - 768px */
/* Medium: 769px - 1024px */
/* Large (desktop): 1025px - 1280px */
/* Extra Large: 1281px+ */

/* ===== Tablet (641px and up) ===== */
@media (min-width: 641px) {
    .navbar-container {
        padding: var(--spacing-md) var(--spacing-xl);
    }
    
    .container,
    .container-admin {
        padding: 0 var(--spacing-xl);
    }
    
    .nav-list {
        gap: var(--spacing-2xl);
    }
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .auctions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        max-width: 500px;
    }
}

/* ===== Tablet Large (769px and up) ===== */
@media (min-width: 769px) {
    :root {
        font-size: 17px;
    }
    
    h1 {
        font-size: var(--font-size-4xl);
    }
    
    .menu-toggle {
        display: none;
    }
    
    .navbar-nav {
        display: flex !important;
    }
    
    /* Sidebar + Main Layout */
    .auctions-container {
        display: grid;
        grid-template-columns: 250px 1fr;
        gap: var(--spacing-2xl);
    }
    
    .filters-sidebar {
        position: relative;
        max-height: 100vh;
        overflow-y: auto;
        padding-top: 0;
    }
    
    /* Two Column Dashboard */
    .dashboard-content > .tab-content {
        display: grid;
        gap: var(--spacing-2xl);
    }
    
    /* Admin Layout */
    .admin-content > .tab-content {
        display: block;
    }
    
    /* Page Header */
    .page-header {
        text-align: left;
        padding: var(--spacing-xl) var(--spacing-2xl);
    }
    
    .hero {
        padding: var(--spacing-2xl) var(--spacing-xl);
        text-align: center;
    }
    
    /* Auction Detail */
    .auction-detail-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
        align-items: start;
    }
    
    .artwork-image-section {
        position: sticky;
        top: 100px;
    }
    
    .artwork-image {
        width: 100%;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }
    
    .artwork-info-small {
        margin-top: var(--spacing-lg);
        text-align: center;
    }
    
    .auction-details-section {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-2xl);
    }
}

/* ===== Desktop (1025px and up) ===== */
@media (min-width: 1025px) {
    .container,
    .container-admin {
        padding: 0 var(--spacing-xl);
    }
    
    .auctions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* Filters Sidebar becomes sticky */
    .filters-sidebar {
        position: sticky;
        top: 100px;
        max-height: calc(100vh - 120px);
    }
    
    /* Hero Large */
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        font-size: var(--font-size-xl);
    }
    
    /* Modal positioning */
    .modal {
        padding: var(--spacing-2xl);
    }
    
    .modal-content {
        max-width: 600px;
    }
    
    .modal-medium {
        max-width: 700px;
    }
    
    .modal-large {
        max-width: 900px;
    }
    
    /* Alert container positioning */
    .alert-container {
        right: var(--spacing-xl);
        top: 120px;
        max-width: 420px;
    }
}

/* ===== Extra Large (1281px and up) ===== */
@media (min-width: 1281px) {
    .container,
    .container-admin {
        max-width: 1280px;
    }
    
    .auctions-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== Mobile Styles (Default - 0px to 640px) ===== */
@media (max-width: 640px) {
    html {
        font-size: 15px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    /* Show mobile menu toggle */
    .menu-toggle {
        display: flex;
    }
    
    /* Mobile Navigation */
    .navbar-container {
        flex-wrap: wrap;
        padding: var(--spacing-md);
    }
    
    .navbar-nav {
        width: 100%;
        order: 3;
        margin-top: var(--spacing-md);
        display: none;
    }
    
    .navbar-nav.active {
        display: flex;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        border-radius: 0;
        width: 100%;
        text-align: left;
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .nav-link.active {
        background-color: var(--color-lightest-gray);
        border-left: 3px solid var(--color-primary);
        padding-left: calc(var(--spacing-md) - 3px);
    }
    
    /* Mobile Forms */
    .form-control {
        padding: var(--spacing-md);
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Mobile Grid */
    .auctions-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    /* Mobile Buttons */
    .btn {
        width: 100%;
    }
    
    .navbar-auth {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .navbar-auth .btn {
        width: 100%;
    }
    
    /* Mobile Auction Detail */
    .auction-detail-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .artwork-image-section {
        position: relative;
        top: 0;
    }
    
    /* Mobile Modal */
    .modal {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 85vh;
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .modal-close {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    /* Mobile Tables */
    table {
        font-size: var(--font-size-sm);
    }
    
    th, td {
        padding: var(--spacing-sm);
    }
    
    /* Mobile Sidebar */
    .auctions-container {
        grid-template-columns: 1fr;
    }
    
    .filters-sidebar {
        margin-bottom: var(--spacing-2xl);
        position: relative;
        max-height: none;
    }
    
    .filter-group {
        margin-bottom: var(--spacing-lg);
    }
    
    /* Mobile Alert Container */
    .alert-container {
        position: fixed;
        top: 80px;
        right: var(--spacing-md);
        left: var(--spacing-md);
        max-width: none;
    }
    
    /* Mobile Hero */
    .hero {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-md);
    }
    
    .hero p {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    /* Mobile Tabs */
    .tabs-list {
        flex-wrap: wrap;
        gap: 0;
        border-bottom: 1px solid var(--color-lighter-gray);
    }
    
    .tab-button {
        flex: 1;
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
        border: none;
        border-bottom: 3px solid transparent;
        margin: 0;
        text-align: center;
    }
    
    .tab-button.active {
        border-bottom-color: var(--color-primary);
    }
    
    /* Mobile Breadcrumb */
    .breadcrumb {
        font-size: var(--font-size-xs);
        gap: var(--spacing-sm);
    }
    
    /* Mobile Pagination */
    .pagination {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .pagination .btn {
        flex: 1;
        min-width: 120px;
    }
    
    .page-info {
        width: 100%;
    }
    
    /* Mobile Details */
    .detail-item {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-md) 0;
    }
    
    .detail-label {
        font-weight: 600;
    }
    
    /* Admin Mobile */
    .container-admin {
        padding: 0 var(--spacing-md);
    }
    
    .admin-header {
        margin-bottom: var(--spacing-lg);
    }
    
    .admin-header h1 {
        font-size: 1.5rem;
    }
}

/* ===== Landscape Mobile (641px width, low height) ===== */
@media (max-width: 900px) and (max-height: 600px) {
    .navbar {
        position: relative;
    }
    
    .hero {
        padding: var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero p {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .stat-value {
        font-size: var(--font-size-2xl);
    }
}

/* ===== Touch Device Adjustments ===== */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .nav-link,
    .card,
    .auction-card {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    /* Larger touch targets */
    .btn {
        min-height: 44px;
    }
    
    .form-control {
        min-height: 44px;
    }
    
    /* Remove hover effects on touch devices */
    .btn:hover {
        background-color: var(--color-primary);
    }
    
    .nav-link:hover {
        color: var(--color-gray);
    }
}

/* ===== High Pixel Density Displays ===== */
@media (-webkit-min-device-pixel-ratio: 2),
       (min-resolution: 192dpi) {
    /* Slightly thicker borders for better visibility */
    .modal-content {
        border: 1px solid var(--color-lighter-gray);
    }
    
    .btn {
        border-width: 2px;
    }
}

/* ===== Dark Mode Support (Prefers Dark Color Scheme) ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-dark: #f5f5f5;
        --color-dark-gray: #e0e0e0;
        --color-gray: #a0a0a0;
        --color-light-gray: #505050;
        --color-lighter-gray: #424242;
        --color-lightest-gray: #303030;
        --color-white: #1e1e1e;
    }
    
    body {
        background-color: var(--color-white);
        color: var(--color-dark);
    }
    
    .navbar {
        background-color: #2a2a2a;
        border-bottom-color: var(--color-lighter-gray);
    }
    
    .card,
    .auction-card,
    .stat-card,
    .modal-content,
    table {
        background-color: #2a2a2a;
        border-color: var(--color-lighter-gray);
    }
    
    .page-header {
        background-color: var(--color-lightest-gray);
    }
    
    thead {
        background-color: var(--color-lighter-gray);
    }
    
    .hero {
        background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== Print Media ===== */
@media print {
    body {
        background-color: white;
        color: black;
        line-height: 1.5;
    }
    
    .navbar,
    .footer,
    .pagination,
    .alert-container,
    .filters-sidebar {
        display: none;
    }
    
    .main-content {
        padding-top: 0;
        padding-bottom: 0;
    }
    
    .auction-detail-container {
        grid-template-columns: 1fr;
    }
    
    .card,
    .auction-card {
        page-break-inside: avoid;
        border: 1px solid #999;
    }
    
    a {
        text-decoration: underline;
    }
}

/* ===== Authentication Pages - Mobile First ===== */
/* Base: 0px - 640px */
.auth-page {
    padding: var(--spacing-lg) var(--spacing-sm);
}

.auth-container {
    grid-template-columns: 1fr;
}

.auth-card {
    padding: var(--spacing-lg);
}

.auth-info {
    display: none;
}

.auth-header h1 {
    font-size: var(--font-size-2xl);
}

.form-row {
    grid-template-columns: 1fr;
}

.form-actions {
    flex-direction: column;
}

.form-actions .btn {
    width: 100%;
}

/* ===== Progress Indicator - Mobile ===== */
.progress-step {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
}

.progress-line {
    max-width: 20px;
}

/* ===== QR Code - Mobile ===== */
.qr-code {
    max-width: 180px;
}

/* ===== Tablet (641px and up) ===== */
@media (min-width: 641px) {
    .auth-page {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .auth-card {
        padding: var(--spacing-2xl);
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .auth-header h1 {
        font-size: var(--font-size-3xl);
    }
}

/* ===== Tablet Large (769px and up) ===== */
@media (min-width: 769px) {
    .auth-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
    
    .auth-card {
        order: 1;
    }
    
    .auth-info {
        display: block;
        order: 2;
    }
    
    .auth-card.compact {
        grid-column: 1;
    }
    
    .qr-code {
        max-width: 250px;
    }
    
    /* Dashboard Tabs */
    .dashboard-tabs,
    .admin-tabs {
        display: flex;
        border-bottom: 2px solid var(--color-lighter-gray);
    }
    
    .tabs-list {
        flex-wrap: nowrap;
    }
    
    .tab-button {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    /* Form Row on Tablet */
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

/* ===== Desktop (1025px and up) ===== */
@media (min-width: 1025px) {
    .auth-page {
        padding: var(--spacing-2xl);
    }
    
    .auth-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
        max-width: 1200px;
    }
    
    .auth-card {
        padding: var(--spacing-2xl);
    }
    
    .auth-info {
        padding: var(--spacing-2xl);
    }
    
    .backup-codes-section {
        max-height: 300px;
    }
    
    /* Dashboard on Desktop */
    .dashboard-content .tab-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }
    
    .admin-content .tab-content {
        display: block;
    }
}

/* ===== Wide Displays (Ultra-wide 1440px+) ===== */
@media (min-width: 1440px) {
    .container,
    .container-admin {
        max-width: 1400px;
    }
    
    .auctions-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .auction-detail-container {
        grid-template-columns: 1fr 1fr;
    }
    
    .artwork-image-section {
        position: sticky;
        top: 120px;
    }
    
    .auth-container {
        max-width: 1400px;
    }
}