/* ==========================================
   JuiceAi - Theme & Mobile Styles
   Dark Theme Support & Responsive Design
   ========================================== */

/* Dark Theme Variables Override */
[data-theme="dark"] {
    --color-bg: #0F0F0F;
    --color-bg-alt: #1A1A1A;
    --color-bg-elevated: #242424;
    --color-bg-hover: #2A2A2A;
    
    --color-text-primary: #F5F5F5;
    --color-text-secondary: #A0A0A0;
    --color-text-tertiary: #707070;
    --color-text-muted: #505050;
    
    --color-border: #333333;
    --color-border-light: #2A2A2A;
    --color-border-dark: #444444;
    
    --color-primary: #F59E0B;
    --color-primary-hover: #FBBF24;
    --color-primary-light: #422006;
    --color-primary-bg: #1C1917;
    
    --color-success-light: #064E3B;
    --color-warning-light: #422006;
    --color-error-light: #450A0A;
    --color-info-light: #1E3A8A;
}

/* Theme Transition */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dark Theme Navbar */
[data-theme="dark"] .navbar {
    background: rgba(15, 15, 15, 0.85);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 15, 15, 0.95);
}

/* Dark Theme Hero */
[data-theme="dark"] .hero-gradient {
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(245, 158, 11, 0.15), transparent);
}

/* Dark Theme Cards */
[data-theme="dark"] .feature-card,
[data-theme="dark"] .model-card,
[data-theme="dark"] .pricing-card,
[data-theme="dark"] .card {
    background: var(--color-bg-elevated);
    border-color: var(--color-border);
}

[data-theme="dark"] .feature-card:hover,
[data-theme="dark"] .model-card:hover,
[data-theme="dark"] .pricing-card:hover {
    border-color: var(--color-border-dark);
}

/* Dark Theme Buttons */
[data-theme="dark"] .btn-outline {
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

[data-theme="dark"] .btn-outline:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-dark);
}

[data-theme="dark"] .btn-ghost {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .btn-ghost:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* Dark Theme Forms */
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
    background: var(--color-bg-alt);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
    border-color: var(--color-primary);
    background: var(--color-bg);
}

[data-theme="dark"] .form-input::placeholder {
    color: var(--color-text-muted);
}

/* Dark Theme Modal */
[data-theme="dark"] .modal-backdrop {
    background: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .modal-content {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
}

/* Dark Theme Footer */
[data-theme="dark"] .footer {
    background: var(--color-bg-alt);
    border-top-color: var(--color-border);
}

/* Dark Theme Code */
[data-theme="dark"] code {
    background: var(--color-bg-alt);
}

/* ==========================================
   Icon Button (Theme Toggle, Language) - No border
   ========================================== */
.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.icon-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

.icon-btn .sun-icon { display: none; }
.icon-btn .moon-icon { display: block; }

[data-theme="dark"] .icon-btn .sun-icon { display: block; }
[data-theme="dark"] .icon-btn .moon-icon { display: none; }

/* Language Button */
.lang-btn {
    font-size: 1.25rem;
}

/* ==========================================
   Language Selector
   ========================================== */
.lang-selector {
    position: relative;
}

.lang-selector-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.lang-selector-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.lang-selector-btn svg {
    width: 16px;
    height: 16px;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 140px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.lang-option.active {
    color: var(--color-primary);
    font-weight: 500;
}

.lang-option:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ==========================================
   Mobile Menu
   ========================================== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    padding: var(--space-6);
    z-index: calc(var(--z-sticky) - 1);
    overflow-y: auto;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.mobile-menu-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.mobile-menu-link {
    display: block;
    padding: var(--space-4);
    color: var(--color-text-primary);
    font-size: var(--text-lg);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.mobile-menu-link:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.mobile-menu-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mobile-menu-actions .btn {
    width: 100%;
    justify-content: center;
}

.mobile-menu-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* ==========================================
   Mobile Responsive Styles
   ========================================== */
@media (max-width: 768px) {
    /* Navigation */
    .nav-links,
    .nav-actions {
        display: none;
    }
    
    .nav-mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        background: transparent;
        border: none;
        cursor: pointer;
        color: var(--color-text-primary);
        border-radius: var(--radius-lg);
        transition: background var(--transition-fast);
    }
    
    .nav-mobile-toggle:hover {
        background: var(--color-bg-hover);
    }
    
    .nav-mobile-toggle svg {
        width: 24px;
        height: 24px;
    }
    
    .nav-container {
        padding: 0 var(--space-4);
    }
    
    /* Hero */
    .hero {
        padding-top: calc(72px + var(--space-8));
        min-height: auto;
        padding-bottom: var(--space-12);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-description {
        font-size: var(--text-base);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-stats {
        justify-content: center;
        gap: var(--space-6);
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: var(--space-8);
    }
    
    .code-preview {
        max-width: 100%;
    }
    
    /* Sections */
    .section {
        padding: var(--space-16) 0;
    }
    
    .section-header {
        margin-bottom: var(--space-10);
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .section-description {
        font-size: var(--text-base);
    }
    
    /* Grids */
    .features-grid,
    .models-grid,
    .pricing-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card,
    .model-card,
    .pricing-card {
        padding: var(--space-6);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    /* Modal */
    .modal-content {
        margin: var(--space-4);
        max-height: calc(100vh - var(--space-8));
    }
    
    /* Dashboard */
    .dashboard {
        flex-direction: column;
    }
    
    .dashboard-sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
    }
    
    .sidebar-nav {
        display: flex;
        flex-direction: row;
        overflow-x: auto;
        padding: var(--space-2);
        gap: var(--space-2);
    }
    
    .sidebar-nav-item {
        flex-shrink: 0;
    }
    
    .sidebar-nav-link {
        padding: var(--space-2) var(--space-4);
        white-space: nowrap;
    }
    
    .sidebar-section {
        display: none;
    }
    
    .dashboard-main {
        padding: var(--space-4);
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }
    
    .dashboard-header-actions {
        width: 100%;
    }
    
    .dashboard-header-actions .btn {
        width: 100%;
    }
    
    /* Usage Cards */
    .usage-overview {
        grid-template-columns: 1fr;
    }
    
    /* Billing */
    .billing-overview {
        grid-template-columns: 1fr;
    }
    
    .plan-selection {
        grid-template-columns: 1fr;
    }
    
    /* Quick Actions */
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    /* Tables */
    .table-container {
        overflow-x: auto;
    }
    
    .table {
        min-width: 500px;
    }
}

@media (max-width: 480px) {
    /* Extra small screens */
    .hero-title {
        font-size: var(--text-2xl);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .stat {
        width: 100%;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .code-content {
        font-size: var(--text-xs);
    }
    
    .api-key-display {
        flex-direction: column;
        gap: var(--space-2);
    }
    
    .api-key-display code {
        font-size: var(--text-xs);
    }
}

/* ==========================================
   Touch-friendly improvements
   ========================================== */
@media (hover: none) and (pointer: coarse) {
    /* Larger touch targets */
    .btn {
        min-height: 48px;
    }
    
    .nav-link {
        padding: var(--space-3) var(--space-4);
    }
    
    .dropdown-item {
        padding: var(--space-4);
    }
    
    .form-input,
    .form-select,
    .form-textarea {
        min-height: 48px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Remove hover effects */
    .feature-card:hover,
    .model-card:hover,
    .pricing-card:hover {
        transform: none;
    }
}

/* ==========================================
   Print styles
   ========================================== */
@media print {
    .navbar,
    .footer,
    .mobile-menu,
    .modal,
    .toast-container {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
}

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

/* ==========================================
   High contrast mode
   ========================================== */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000000;
        --color-border-light: #333333;
    }
    
    [data-theme="dark"] {
        --color-border: #FFFFFF;
        --color-border-light: #CCCCCC;
    }
}