/* Mobile First Responsive Design */

/* Extra Small Devices (phones, 576px and down) */
@media (max-width: 575.98px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-sm) 0;
    }
    
    .logo h1 {
        font-size: var(--font-size-xl);
    }
    
    .nav-list {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        justify-content: center;
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .header-controls {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .auth-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .hero-content h2 {
        font-size: var(--font-size-2xl);
    }
    
    .hero-content p {
        font-size: var(--font-size-base);
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .article-card {
        margin-bottom: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .social-links {
        justify-content: center;
    }
}

/* Small Devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .nav-list {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Medium Devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
    .header-content {
        gap: var(--spacing-lg);
    }
    
    .nav-list {
        gap: var(--spacing-lg);
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Devices (desktops, 992px and up) */
@media (min-width: 992px) and (max-width: 1199.98px) {
    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

/* Extra Large Devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    }
}

/* Navigation Mobile Menu */
@media (max-width: 767.98px) {
    .nav {
        position: relative;
    }
    
    .nav-list {
        flex-direction: column;
        background-color: var(--surface-color);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        z-index: 1000;
        box-shadow: 0 4px 6px var(--shadow-color);
        display: none;
    }
    
    .nav-list.show {
        display: flex;
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--radius-sm);
        width: 100%;
        text-align: left;
    }
    
    /* Mobile menu toggle button */
    .nav-toggle {
        display: block;
        background: none;
        border: none;
        color: var(--text-secondary);
        font-size: var(--font-size-lg);
        cursor: pointer;
        padding: var(--spacing-sm);
    }
    
    .nav-toggle:hover {
        color: var(--text-primary);
    }
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-list {
        display: flex !important;
    }
}

/* Article Card Responsive Adjustments */
@media (max-width: 575.98px) {
    .article-content {
        padding: var(--spacing-md);
    }
    
    .article-title {
        font-size: var(--font-size-lg);
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .article-tags {
        gap: var(--spacing-xs);
    }
    
    .article-tag {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
    }
}

/* Form Responsive Adjustments */
@media (max-width: 575.98px) {
    .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .form-control {
        padding: var(--spacing-sm);
        font-size: var(--font-size-base);
    }
    
    .form-label {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-md);
    }
}

/* Dashboard Responsive Adjustments */
@media (max-width: 767.98px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        height: 100vh;
        width: 280px;
        z-index: 1000;
        transition: left var(--transition-normal);
    }
    
    .dashboard-sidebar.show {
        left: 0;
    }
    
    .dashboard-main {
        margin-left: 0;
        padding: var(--spacing-md);
    }
    
    .table-responsive {
        overflow-x: auto;
    }
    
    .table {
        min-width: 600px;
    }
}

/* Modal Responsive Adjustments */
@media (max-width: 575.98px) {
    .modal {
        margin: var(--spacing-sm);
        width: calc(100% - var(--spacing-sm) * 2);
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-body {
        padding: var(--spacing-md);
    }
    
    .modal-footer {
        padding: var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .nav,
    .header-controls,
    .loading-spinner {
        display: none !important;
    }
    
    .article-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .hero {
        background: none !important;
        color: black !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-primary: #000000;
        --text-secondary: #333333;
        --background-color: #ffffff;
        --surface-color: #f0f0f0;
    }
    
    [data-theme="dark"] {
        --border-color: #ffffff;
        --text-primary: #ffffff;
        --text-secondary: #cccccc;
        --background-color: #000000;
        --surface-color: #1a1a1a;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .article-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .social-links a:hover {
        transform: none;
    }
}