/* ADAMCHAT.ai - Responsive CSS */

/* Tablet styles */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-8);
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .chat-preview {
        margin: 0 auto;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-6);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-6);
    }
}

/* Mobile styles */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        border-top: 1px solid var(--border-color);
        flex-direction: column;
        padding: var(--spacing-4);
        gap: var(--spacing-4);
        transition: top var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        top: 100%;
    }
    
    .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 {
        padding: calc(80px + var(--spacing-12)) 0 var(--spacing-12) 0;
        min-height: auto;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .feature-card {
        padding: var(--spacing-4);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
    
    /* Auth pages */
    .auth-card {
        padding: var(--spacing-6);
        margin: var(--spacing-3);
    }
    
    .auth-header h1 {
        font-size: var(--font-size-xl);
    }
    
    /* Chat page */
    .chat-container {
        height: 100vh;
        display: flex;
        flex-direction: column;
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: -300px;
        width: 300px;
        height: 100vh;
        background: var(--bg-card);
        border-right: 1px solid var(--border-color);
        z-index: var(--z-fixed);
        transition: left var(--transition-normal);
        display: flex;
        flex-direction: column;
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .chat-main {
        flex: 1;
        display: flex;
        flex-direction: column;
        height: 100vh;
    }
    
    .chat-header {
        padding: var(--spacing-3) var(--spacing-4);
        border-bottom: 1px solid var(--border-color);
        background: var(--bg-card);
        display: flex;
        align-items: center;
        gap: var(--spacing-3);
        min-height: 60px;
    }
    
    .sidebar-toggle {
        display: flex;
        background: none;
        border: none;
        color: var(--text-primary);
        cursor: pointer;
        padding: var(--spacing-2);
        border-radius: var(--radius-md);
        transition: background var(--transition-fast);
    }
    
    .sidebar-toggle:hover {
        background: var(--bg-secondary);
    }
    
    .chat-title {
        flex: 1;
    }
    
    .chat-title h1 {
        font-size: var(--font-size-lg);
        margin: 0;
    }
    
    .chat-status {
        font-size: var(--font-size-xs);
        color: var(--success-color);
    }
    
    .chat-actions {
        display: flex;
        gap: var(--spacing-2);
    }
    
    .action-btn {
        background: none;
        border: none;
        color: var(--text-muted);
        cursor: pointer;
        padding: var(--spacing-2);
        border-radius: var(--radius-md);
        transition: all var(--transition-fast);
    }
    
    .action-btn:hover {
        color: var(--text-primary);
        background: var(--bg-secondary);
    }
    
    .messages-container {
        flex: 1;
        overflow-y: auto;
        padding: var(--spacing-4);
        background: var(--bg-secondary);
    }
    
    .messages-list {
        max-width: 100%;
        margin: 0 auto;
    }
    
    .welcome-message {
        text-align: center;
        padding: var(--spacing-8) var(--spacing-4);
        background: var(--bg-card);
        border-radius: var(--radius-xl);
        margin-bottom: var(--spacing-6);
    }
    
    .welcome-icon {
        width: 60px;
        height: 60px;
        background: var(--primary-color);
        border-radius: var(--radius-full);
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto var(--spacing-4) auto;
        color: var(--text-white);
        font-size: var(--font-size-2xl);
    }
    
    .welcome-message h2 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-3);
    }
    
    .welcome-message p {
        color: var(--text-secondary);
        margin-bottom: var(--spacing-6);
    }
    
    .input-area {
        background: var(--bg-card);
        border-top: 1px solid var(--border-color);
        padding: var(--spacing-4);
    }
    
    .input-container {
        max-width: 100%;
        margin: 0 auto;
    }
    
    .file-preview {
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: var(--spacing-3);
        margin-bottom: var(--spacing-3);
    }
    
    .file-preview-content {
        display: flex;
        align-items: center;
        gap: var(--spacing-3);
    }
    
    .file-info {
        flex: 1;
    }
    
    .file-name {
        display: block;
        font-weight: 500;
        font-size: var(--font-size-sm);
    }
    
    .file-size {
        display: block;
        font-size: var(--font-size-xs);
        color: var(--text-muted);
    }
    
    .remove-file {
        background: none;
        border: none;
        color: var(--text-muted);
        cursor: pointer;
        padding: var(--spacing-1);
        border-radius: var(--radius-sm);
        transition: color var(--transition-fast);
    }
    
    .remove-file:hover {
        color: var(--error-color);
    }
    
    .input-controls {
        display: flex;
        gap: var(--spacing-3);
        align-items: flex-end;
    }
    
    .input-actions {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-2);
    }
    
    .input-wrapper {
        flex: 1;
        position: relative;
    }
    
    .input-wrapper textarea {
        width: 100%;
        min-height: 44px;
        max-height: 120px;
        padding: var(--spacing-3);
        padding-right: 50px;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        background: var(--bg-card);
        color: var(--text-primary);
        font-family: var(--font-family);
        font-size: var(--font-size-base);
        resize: none;
        transition: border-color var(--transition-fast);
    }
    
    .input-wrapper textarea:focus {
        border-color: var(--primary-color);
        outline: none;
    }
    
    .send-btn {
        position: absolute;
        right: var(--spacing-2);
        bottom: var(--spacing-2);
        width: 36px;
        height: 36px;
        background: var(--primary-color);
        color: var(--text-white);
        border: none;
        border-radius: var(--radius-full);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all var(--transition-fast);
    }
    
    .send-btn:disabled {
        background: var(--border-color);
        cursor: not-allowed;
    }
    
    .send-btn:not(:disabled):hover {
        background: var(--primary-dark);
        transform: scale(1.05);
    }
    
    .input-footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: var(--spacing-2);
        font-size: var(--font-size-xs);
        color: var(--text-muted);
    }
    
    .char-counter {
        font-variant-numeric: tabular-nums;
    }
    
    .input-hint {
        display: none;
    }
}

/* Small mobile styles */
@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-actions {
        width: 100%;
    }
    
    .btn-large {
        width: 100%;
        justify-content: center;
    }
    
    .auth-card {
        padding: var(--spacing-4);
        margin: var(--spacing-2);
    }
    
    .sidebar {
        width: 280px;
        left: -280px;
    }
    
    .input-actions {
        flex-direction: row;
        gap: var(--spacing-1);
    }
    
    .action-btn {
        padding: var(--spacing-2);
        font-size: var(--font-size-sm);
    }
    
    .quick-actions {
        gap: var(--spacing-2);
    }
    
    .quick-action {
        padding: var(--spacing-2);
        font-size: var(--font-size-xs);
    }
}

/* Landscape mobile */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: calc(60px + var(--spacing-8)) 0 var(--spacing-8) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-description {
        font-size: var(--font-size-sm);
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-6);
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo,
    .footer-logo,
    .sidebar-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .typing-indicator span {
        animation: none;
    }
    
    .spinner {
        animation: none;
    }
}

/* Dark mode adjustments for mobile */
@media (max-width: 768px) and (prefers-color-scheme: dark) {
    .nav-menu {
        background: var(--bg-card);
        border-top-color: var(--border-color);
    }
    
    .sidebar {
        background: var(--bg-card);
        border-right-color: var(--border-color);
    }
    
    .chat-header {
        background: var(--bg-card);
        border-bottom-color: var(--border-color);
    }
    
    .input-area {
        background: var(--bg-card);
        border-top-color: var(--border-color);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .action-btn {
        min-width: 44px;
        min-height: 44px;
    }
    
    .nav-link {
        padding: var(--spacing-3) 0;
    }
    
    .quick-action {
        min-height: 44px;
        padding: var(--spacing-3);
    }
    
    /* Remove hover effects on touch devices */
    .btn:hover,
    .action-btn:hover,
    .nav-link:hover,
    .quick-action:hover {
        background: initial;
        color: initial;
        transform: none;
    }
    
    /* Add active states for touch feedback */
    .btn:active {
        transform: scale(0.98);
    }
    
    .action-btn:active {
        background: var(--bg-secondary);
    }
}

/* Accessibility improvements */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-muted: #333333;
        --bg-secondary: #f0f0f0;
    }
    
    .btn-outline {
        border-width: 2px;
    }
    
    .form-group input:focus,
    .form-group textarea:focus {
        border-width: 2px;
        box-shadow: 0 0 0 2px var(--primary-color);
    }
}

/* Print optimizations for mobile */
@media print {
    .sidebar,
    .chat-header,
    .input-area,
    .nav-toggle,
    .sidebar-toggle {
        display: none !important;
    }
    
    .chat-main {
        height: auto !important;
    }
    
    .messages-container {
        overflow: visible !important;
        height: auto !important;
    }
}