/* ===== RESPONSIVE CSS ===== */

/* ===== LARGE SCREENS (1200px and up) ===== */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }

    .hero-title {
        font-size: var(--font-size-6xl);
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .quick-access-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ===== MEDIUM SCREENS (768px to 1199px) ===== */
@media (max-width: 1199px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }

    .hero-visual {
        height: 400px;
    }

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

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

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

/* ===== SMALL SCREENS (576px to 767px) ===== */
@media (max-width: 767px) {

    /* Typography */
    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-2xl);
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.show {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-lg);
        width: 100%;
        padding: 0 var(--spacing-lg);
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero Section */
    .hero-section {
        min-height: 80vh;
        padding: var(--spacing-2xl) 0;
    }

    .hero-container {
        padding: 0 var(--spacing-lg);
    }

    .hero-text {
        padding-right: 0;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .floating-card {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .floating-card i {
        font-size: var(--font-size-lg);
    }

    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

    /* Stats */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: var(--font-size-4xl);
    }

    /* Quick Access */
    .quick-access-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    /* Cards */
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-md);
    }

    /* Modals */
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-lg);
    }

    /* Tables */
    .table th,
    .table td {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* Forms */
    .form-group {
        margin-bottom: var(--spacing-md);
    }

    .form-input,
    .form-textarea,
    .form-select {
        padding: var(--spacing-sm);
    }

    /* Buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    /* Back to Top */
    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 45px;
        height: 45px;
    }
}

/* ===== EXTRA SMALL SCREENS (up to 575px) ===== */
@media (max-width: 575px) {

    /* Container */
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero-container {
        padding: 0 var(--spacing-md);
    }

    /* Typography */
    .hero-title {
        font-size: var(--font-size-3xl);
        line-height: 1.3;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xl);
        padding: 0 var(--spacing-sm);
    }

    .hero-text {
        padding: 0 var(--spacing-sm);
    }

    /* Spacing */
    .hero-section {
        padding: var(--spacing-xl) 0;
    }

    .features-section,
    .stats-section,
    .quick-access-section {
        padding: var(--spacing-2xl) 0;
    }

    /* Floating Cards */
    .floating-card {
        position: relative !important;
        top: auto !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        margin-bottom: var(--spacing-md);
        animation: none;
    }

    .hero-visual {
        height: auto;
        margin-top: var(--spacing-xl);
    }

    /* Navigation */
    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .nav-logo a {
        font-size: var(--font-size-lg);
    }

    .logo-name,
    .footer-logo-name,
    .loading-logo-name {
        font-size: var(--font-size-lg);
    }

    .logo-subtitle,
    .footer-logo-subtitle,
    .loading-logo-subtitle {
        font-size: var(--font-size-xs);
    }

    /* Buttons */
    .hero-buttons {
        gap: var(--spacing-md);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    /* Cards */
    .feature-card,
    .quick-access-card {
        padding: var(--spacing-md);
    }

    .feature-icon {
        width: 50px;
        height: 50px;
    }

    .feature-icon i {
        font-size: var(--font-size-lg);
    }

    /* Stats */
    .stat-item {
        padding: var(--spacing-lg);
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }

    .stat-label {
        font-size: var(--font-size-base);
    }

    /* Footer */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }

    .footer-content {
        gap: var(--spacing-lg);
    }

    .contact-info p {
        font-size: var(--font-size-sm);
    }

    /* Modals */
    .modal-content {
        margin: var(--spacing-sm);
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-md);
    }

    .modal-title {
        font-size: var(--font-size-lg);
    }

    /* Alerts */
    .alert {
        padding: var(--spacing-md);
        flex-direction: column;
        text-align: center;
    }

    .alert-icon {
        margin-bottom: var(--spacing-sm);
    }

    /* Tabs */
    .tab-list {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .tab-button {
        width: 100%;
        text-align: center;
    }

    /* Pagination */
    .pagination {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }

    .pagination-link {
        width: 35px;
        height: 35px;
        font-size: var(--font-size-sm);
    }

    /* Sidebar */
    .sidebar {
        width: 100%;
    }

    .sidebar-header,
    .sidebar-body {
        padding: var(--spacing-md);
    }

    /* Forms */
    .form-checkbox,
    .form-radio {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    /* Tooltips */
    .tooltip-content {
        position: static;
        transform: none;
        margin-top: var(--spacing-sm);
        opacity: 1;
        visibility: visible;
        background: var(--gray-100);
        color: var(--gray-900);
    }

    .tooltip-content::after {
        display: none;
    }
}

/* ===== LANDSCAPE ORIENTATION ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero-section {
        min-height: 100vh;
        padding: var(--spacing-lg) 0;
    }

    .hero-content {
        gap: var(--spacing-lg);
    }

    .hero-visual {
        height: 300px;
    }

    .floating-card {
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

    .floating-card i {
        font-size: var(--font-size-base);
    }

    .nav-menu {
        height: calc(100vh - 60px);
        top: 60px;
    }
}

/* ===== HIGH DPI DISPLAYS ===== */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
    .hero-section::before {
        background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><defs><pattern id="grain-hd" width="200" height="200" patternUnits="userSpaceOnUse"><circle cx="100" cy="100" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="200" height="200" fill="url(%23grain-hd)"/></svg>');
    }
}

/* ===== PRINT STYLES ===== */
@media print {

    .header,
    .footer,
    .back-to-top,
    .nav-toggle,
    .loading-screen {
        display: none !important;
    }

    .main {
        margin-top: 0;
    }

    .hero-section {
        background: var(--white) !important;
        color: var(--black) !important;
        min-height: auto;
    }

    .hero-title,
    .section-title {
        color: var(--black) !important;
    }

    .gradient-text {
        background: none !important;
        -webkit-text-fill-color: var(--black) !important;
        color: var(--black) !important;
    }

    .btn {
        border: 1px solid var(--black) !important;
        background: var(--white) !important;
        color: var(--black) !important;
    }

    .feature-card,
    .quick-access-card {
        border: 1px solid var(--gray-300) !important;
        box-shadow: none !important;
        break-inside: avoid;
    }

    .stats-section {
        background: var(--white) !important;
        color: var(--black) !important;
    }

    .stat-number {
        background: none !important;
        -webkit-text-fill-color: var(--black) !important;
        color: var(--black) !important;
    }

    .floating-card {
        display: none !important;
    }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .floating-card {
        animation: none;
    }

    .loading-spinner {
        animation: none;
    }

    .progress-bar::after {
        animation: none;
    }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1f2937;
        --gray-50: #111827;
        --gray-100: #1f2937;
        --gray-200: #374151;
        --gray-300: #4b5563;
        --gray-400: #6b7280;
        --gray-500: #9ca3af;
        --gray-600: #d1d5db;
        --gray-700: #e5e7eb;
        --gray-800: #f3f4f6;
        --gray-900: #f9fafb;
        --black: #ffffff;
    }

    .header {
        background: rgba(31, 41, 55, 0.95);
        border-bottom-color: var(--gray-700);
    }

    .nav-link {
        color: var(--gray-300);
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--primary-light);
        background: rgba(37, 99, 235, 0.2);
    }

    .feature-card,
    .quick-access-card {
        background: var(--gray-800);
        border-color: var(--gray-700);
    }

    .feature-card h3,
    .quick-access-card h3 {
        color: var(--gray-100);
    }

    .feature-card p,
    .quick-access-card p {
        color: var(--gray-400);
    }

    .modal-content {
        background: var(--gray-800);
        color: var(--gray-100);
    }

    .modal-header {
        border-bottom-color: var(--gray-700);
    }

    .modal-footer {
        border-top-color: var(--gray-700);
    }

    .sidebar {
        background: var(--gray-800);
        border-left-color: var(--gray-700);
    }

    .sidebar-header {
        border-bottom-color: var(--gray-700);
    }

    .table {
        background: var(--gray-800);
    }

    .table th {
        background: var(--gray-700);
        color: var(--gray-100);
    }

    .table td {
        border-bottom-color: var(--gray-700);
    }

    .table tbody tr:hover {
        background: var(--gray-700);
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --secondary-color: #008000;
        --accent-color: #ff8000;
        --danger-color: #ff0000;
    }

    .btn {
        border-width: 2px;
    }

    .form-input,
    .form-textarea,
    .form-select {
        border-width: 2px;
    }

    .feature-card,
    .quick-access-card {
        border-width: 2px;
    }
}

/* ===== FOCUS VISIBLE ===== */
@media (prefers-reduced-motion: no-preference) {

    .btn:focus-visible,
    .nav-link:focus-visible,
    .form-input:focus-visible,
    .form-textarea:focus-visible,
    .form-select:focus-visible {
        outline: 2px solid var(--primary-color);
        outline-offset: 2px;
    }
}