/* Responsive Design - Mobile First Approach */

/* Extra small devices (phones, 576px and down) */
@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }

    .navbar {
        padding: 1rem 15px;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .nav-brand {
        order: 1;
    }

    .nav-utils {
        order: 2;
        margin-left: auto;
        display: flex;
        gap: 0.5rem;
    }

    .nav-auth {
        order: 3;
        display: none;
    }

    .nav-menu {
        order: 4;
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
        order: 2;
    }

    .mobile-menu.active {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
        margin-bottom: 1rem;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-features {
        gap: 0.75rem;
        justify-content: center;
    }

    .feature-item {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 0.5rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .pricing-section {
        padding: 60px 0;
    }

    .pricing-category {
        margin-bottom: 3rem;
    }

    .category-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card {
        padding: 1.5rem;
    }

    .plan-name {
        font-size: 1.25rem;
    }

    .plan-price {
        font-size: 2rem;
    }

    .plan-features {
        margin-bottom: 1.5rem;
    }

    .plan-feature {
        padding: 0.5rem 0;
        font-size: 0.9rem;
    }

    .features-section {
        padding: 60px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .feature-card .feature-icon {
        font-size: 2.5rem;
    }

    .modal-content {
        margin: 5% auto;
        width: 95%;
        padding: 1.5rem;
        max-height: 90vh;
        overflow-y: auto;
    }

    .auth-options {
        flex-direction: column;
        gap: 0.75rem;
    }

    .auth-btn {
        padding: 0.875rem;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .language-selector {
        font-size: 0.875rem;
        padding: 0.375rem;
    }

    .theme-toggle {
        padding: 0.375rem;
        width: 36px;
        height: 36px;
    }

    .mobile-menu-toggle {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Footer mobile styles */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-section {
        text-align: center;
    }

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

/* Small devices (landscape phones, 576px to 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .container {
        padding: 0 20px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

    .hero-buttons {
        flex-wrap: nowrap;
        gap: 1rem;
    }

    .hero-buttons .btn {
        flex: 1;
        min-width: 140px;
    }

    .nav-menu {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.875rem;
    }

    .modal-content {
        width: 90%;
        max-width: 400px;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

/* Medium devices (tablets, 768px to 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .container {
        padding: 0 25px;
        max-width: 720px;
    }

    .hero-title {
        font-size: 3rem;
    }

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

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

    .nav-menu {
        gap: 1.5rem;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .mobile-menu {
        display: none !important;
    }

    .nav-auth {
        display: flex;
    }

    .hero-content {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-features {
        justify-content: center;
    }

    .modal-content {
        width: 80%;
        max-width: 450px;
    }

    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

/* Large devices (desktops, 992px to 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 960px;
    }

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

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

    .hero-content {
        text-align: left;
    }

    .hero-buttons {
        justify-content: flex-start;
    }

    .hero-features {
        justify-content: flex-start;
    }

    .nav-menu {
        display: flex;
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }

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

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

    .hero-content {
        max-width: 800px;
        margin: 0 auto;
    }
}

/* Special responsive cases */
@media (max-width: 767px) {
    .section-title,
    .section-subtitle {
        text-align: center;
    }

    .category-title {
        text-align: center;
    }

    /* Mobile navigation improvements */
    .mobile-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface-color);
        box-shadow: var(--shadow-lg);
        z-index: 1000;
    }

    /* Improve touch targets */
    .btn,
    .nav-link,
    .auth-btn {
        min-height: 44px;
        min-width: 44px;
    }

    /* Better form inputs on mobile */
    .form-group input,
    .form-group select {
        font-size: 16px; /* Prevent zoom on iOS */
        min-height: 44px;
    }
}

/* Tablet landscape optimization */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .modal-content {
        margin: 2% auto;
        max-height: 96vh;
    }

    .pricing-section,
    .features-section {
        padding: 60px 0;
    }
}

/* Mobile landscape optimization */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: 80px 0 40px;
        min-height: auto;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        display: none;
    }

    .modal-content {
        margin: 1% auto;
        max-height: 98vh;
    }

    .nav-auth {
        display: none;
    }

    .mobile-auth {
        display: flex;
        flex-direction: row;
        gap: 0.5rem;
    }

    .mobile-auth .btn {
        flex: 1;
        padding: 0.5rem;
        font-size: 0.875rem;
    }
}

/* High-resolution displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .liquid-glass-effect {
        animation-duration: 8s;
    }

    /* Crisper text on retina */
    .hero-title,
    .section-title,
    .category-title {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .liquid-glass-effect {
        animation: none;
    }

    .pricing-card:hover,
    .feature-card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }
}

/* Dark mode media query fallback */
@media (prefers-color-scheme: dark) {
    [data-theme="auto"] {
        --background-color: #0f172a;
        --surface-color: #1e293b;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --border-color: #334155;
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    }
}

/* Print styles */
@media print {
    .header,
    .nav-auth,
    .nav-utils,
    .hero-buttons,
    .modal,
    .mobile-menu-toggle,
    .footer {
        display: none !important;
    }

    .hero {
        padding: 40px 0 !important;
        background: white !important;
        color: black !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .pricing-card,
    .feature-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        background: white !important;
        color: black !important;
    }

    .container {
        max-width: none !important;
    }
}

/* Very small screens (under 320px) */
@media (max-width: 320px) {
    .container {
        padding: 0 10px;
    }

    .navbar {
        padding: 0.75rem 10px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .feature-item {
        padding: 0.375rem 0.75rem;
        font-size: 0.75rem;
    }

    .pricing-card {
        padding: 1rem;
    }

    .modal-content {
        padding: 1rem;
        margin: 2% auto;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .auth-btn {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
}

/* Foldable devices */
@media (max-width: 283px) {
    .nav-brand h2 {
        font-size: 1rem;
    }

    .brand-tagline {
        font-size: 0.7rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.75rem;
    }

    .language-selector {
        font-size: 0.75rem;
        padding: 0.25rem;
    }

    .theme-toggle {
        padding: 0.25rem;
        width: 32px;
        height: 32px;
    }
}

/* Height-based media queries */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 80px 0 40px;
    }

    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1rem;
    }

    .hero-description {
        display: none;
    }

    .hero-buttons {
        margin-bottom: 1.5rem;
    }

    .hero-features {
        display: none;
    }

    .modal-content {
        margin: 1% auto;
        max-height: 98vh;
        overflow-y: auto;
    }

    .pricing-section,
    .features-section {
        padding: 40px 0;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .pricing-card:hover,
    .feature-card:hover,
    .btn:hover {
        transform: none;
    }

    .nav-link:hover {
        color: inherit;
    }

    .btn-secondary:hover {
        border-color: var(--border-color);
        color: var(--text-primary);
    }

    .auth-btn:hover:not(.active) {
        border-color: var(--border-color);
        color: inherit;
    }

    /* Improve touch feedback */
    .btn:active,
    .auth-btn:active,
    .nav-link:active {
        transform: scale(0.98);
    }
}

/* 4K and large displays */
@media (min-width: 1600px) {
    .container {
        max-width: 1400px;
    }

    .hero-title {
        font-size: 4rem;
    }

    .section-title {
        font-size: 3rem;
    }

    .pricing-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 3rem;
    }

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 3rem;
    }

    .hero-content {
        max-width: 1000px;
    }
}

/* Ultra-wide displays */
@media (min-width: 2000px) {
    .container {
        max-width: 1800px;
    }

    .hero-title {
        font-size: 5rem;
    }
}

/* RTL language support */
[dir="rtl"] .hero-content,
[dir="rtl"] .section-title,
[dir="rtl"] .section-subtitle,
[dir="rtl"] .category-title {
    text-align: right;
}

[dir="rtl"] .hero-buttons,
[dir="rtl"] .hero-features {
    justify-content: flex-end;
}

[dir="rtl"] .plan-feature {
    flex-direction: row-reverse;
}

[dir="rtl"] .form-group input,
[dir="rtl"] .form-group select,
[dir="rtl"] .form-group textarea {
    text-align: right;
}

[dir="rtl"] .nav-menu {
    flex-direction: row-reverse;
}

[dir="rtl"] .nav-auth {
    flex-direction: row-reverse;
}

/* Reduced data mode */
@media (prefers-reduced-data: reduce) {
    .liquid-glass-effect {
        display: none;
    }

    .hero-background {
        background: none !important;
    }

    * {
        background-image: none !important;
    }
}

/* Specific fixes for iOS Safari */
@supports (-webkit-touch-callout: none) {
    .hero {
        min-height: -webkit-fill-available;
    }
    
    .modal-content {
        max-height: -webkit-fill-available;
    }
}

/* Specific fixes for mobile browsers */
@media (max-width: 767px) {
    /* Prevent horizontal scroll */
    html, body {
        max-width: 100%;
        overflow-x: hidden;
    }
    
    /* Improve scrolling performance */
    .pricing-grid,
    .features-grid {
        -webkit-overflow-scrolling: touch;
    }
}