/* CyberSec Knowledge Hub - Responsive Styles */

/* Large Desktop (1400px and above) */
@media (min-width: 1400px) {
    .container {
        max-width: 1600px;
    }
    
    .content-grid {
        grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    }
    
    .hero h1 {
        font-size: 4rem;
    }
}

/* Desktop (1200px - 1399px) */
@media (max-width: 1399px) {
    .container {
        max-width: 1200px;
    }
    
    .content-grid {
        grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    }
}

/* Large Tablet / Small Desktop (1024px - 1199px) */
@media (max-width: 1199px) {
    .container { max-width: 1024px; padding: 0 var(--spacing-lg); }
    
    .main-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .sidebar {
        order: -1;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .management-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }

      .navbar { position: relative; }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    flex-direction: column;
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;          /* <- prevents invisible layer from blocking clicks */
    transition: all var(--transition-base);
    z-index: 150;                  /* above header contents */
  }
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;          /* clickable when shown */
  }

  .mobile-menu-toggle { display: block; }  /* show the hamburger */
}

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) {
    .container {
        max-width: 768px;
    }
    
    .navbar {
        position: relative;
    }
    
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--secondary-bg);
        border: 1px solid var(--border-color);
        border-top: none;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        pointer-events: none;
        z-index: 150;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

/* submenu inside mobile drawer */
.nav-links .submenu {
  position: static;
  min-width: 0;
  border: none;
  box-shadow: none;
  background: transparent;
  padding: 0 0 0 .5rem;

  /* ensure it shows when .open is toggled on touch */
  opacity: 1;
  transform: none;
  visibility: visible;
  pointer-events: auto;
}
.nav-links .submenu a { padding: .5rem; border-radius: var(--radius-sm); }

    
    .mobile-menu-toggle {
        display: block;
    }
    
    .action-tabs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        max-width: 500px;
        margin: 0 auto var(--spacing-2xl);
    }
    
    .controls-section {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .search-controls {
        min-width: auto;
        flex-direction: column;
    }
    
    .view-controls {
        align-self: center;
    }
    
    .content-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .form-section {
        padding: var(--spacing-lg);
    }
    
    .file-upload {
        padding: var(--spacing-xl);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        padding: var(--spacing-lg);
    }
}

/* Mobile Large (568px - 767px) */
@media (max-width: 767px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .action-tabs {
        grid-template-columns: 1fr;
        max-width: 300px;
    }
    
    .action-tab {
        justify-content: center;
        padding: var(--spacing-md);
    }
    
    .search-controls {
        gap: var(--spacing-sm);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .content-card {
        padding: var(--spacing-md);
    }
    
    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .content-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .content-stats {
        align-self: stretch;
        justify-content: space-between;
    }
    
    .sidebar {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-section {
        padding: var(--spacing-md);
        margin: var(--spacing-md) 0;
    }
    
    .form-actions {
        flex-direction: column-reverse;
    }
    
    .btn {
        justify-content: center;
        width: 100%;
    }
    
    .management-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .uploaded-file {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .file-actions {
        align-self: stretch;
        justify-content: space-between;
    }
}

/* Mobile Small (480px - 567px) */
@media (max-width: 567px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .navbar {
        padding: var(--spacing-sm) 0;
    }
    
    .logo {
        font-size: 1.25rem;
    }
    
    .content-card h3 {
        font-size: 1.1rem;
    }
    
    .content-excerpt {
        font-size: 0.9rem;
    }
    
    .widget {
        padding: var(--spacing-md);
    }
    
    .form-section {
        padding: var(--spacing-sm);
        border-radius: var(--radius-md);
    }
    
    .file-upload {
        padding: var(--spacing-md);
    }
    
    .file-upload-icon {
        font-size: 2rem;
    }
    
    .modal-content {
        margin: var(--spacing-sm);
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .toast {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        top: var(--spacing-sm);
    }
}

/* Mobile Extra Small (320px - 479px) */
@media (max-width: 479px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .hero h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    .action-tab {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .search-bar,
    .filter-select {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .content-type {
        font-size: 0.7rem;
        padding: 2px 6px;
    }
    
    .content-date,
    .content-stats {
        font-size: 0.8rem;
    }
    
    .btn {
        padding: 10px var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px;
        font-size: 0.9rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .category-item {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }
    
    .recent-post h4 {
        font-size: 0.85rem;
    }
    
    .recent-post-date {
        font-size: 0.75rem;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .action-tab:hover,
    .btn:hover,
    .content-card:hover {
        transform: none;
    }
    
    .action-tab:active,
    .btn:active {
        transform: translateY(0);
        opacity: 0.8;
    }
    
    .content-card:active {
        transform: scale(0.98);
    }
    
    /* Increase touch targets */
    .action-btn,
    .view-btn,
    .mobile-menu-toggle {
        min-height: 44px;
        min-width: 44px;
    }
    
    .category-item,
    .recent-post {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 2dppx) {
    .file-upload-icon,
    .loading-spinner {
        transform: translateZ(0);
    }
}

/* Landscape Orientation on Mobile */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-md) 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .action-tabs {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-sm);
    }
    
    .main-content {
        padding: var(--spacing-md) 0;
    }
    
    .sidebar {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .content-card:hover {
        transform: none;
    }
    
    .btn:hover,
    .action-tab:hover {
        transform: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 4px solid var(--brand-primary);
    }
}

/* Print Styles */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .main-header,
    .action-tabs,
    .controls-section,
    .sidebar,
    .pagination,
    .main-footer,
    .btn,
    .action-btn {
        display: none !important;
    }
    
    .content-card {
        border: 1px solid #ccc !important;
        break-inside: avoid;
        margin-bottom: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
        color: black !important;
        background: none !important;
        -webkit-text-fill-color: black !important;
    }
    
    a {
        text-decoration: underline;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8rem;
    }
}

/* Dark Mode Support (for future implementation) */
@media (prefers-color-scheme: light) {
    .light-mode-toggle {
        display: block;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: rgba(255, 255, 255, 0.3);
        --border-hover: rgba(56, 189, 248, 0.8);
        --text-muted: #a1a1aa;
    }
    
    .content-card {
        border-width: 2px;
    }
    
    .btn {
        border: 2px solid transparent;
    }
    
    .btn:focus {
        border-color: white;
    }
}

/* Homepage layout helpers */
.home-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* WHY SECTION RESPONSIVE */

@media (max-width:1000px){

    .why-grid{
        grid-template-columns:repeat(2,1fr);
    }

}

@media (max-width:600px){

    .why-grid{
        grid-template-columns:1fr;
    }

}

@media (max-width:700px){

    .cta-box{

        padding:48px 28px;
    }

}


/* FOOTER RESPONSIVE */

@media (max-width:1000px){

    .footer-top{

        grid-template-columns:1fr 1fr;

        gap:32px;
    }

}

@media (max-width:600px){

    .footer-top{

        grid-template-columns:1fr;
    }

    .footer-bottom-inner{

        flex-direction:column;

        gap:10px;

        text-align:center;
    }

}