/* ========================================
   CLAUDIA - Modern Design System
   ======================================== */

:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-card: #1e1e1e;
    
    /* Accent Colors */
    --accent-primary: #8b5cf6;
    --accent-secondary: #ec4899;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    /* Status Colors */
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* Light Theme */
body.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e5e5e5;
    --bg-card: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-muted: #999999;
}

/* ========================================
   Base Styles
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   App Container
   ======================================== */

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
}

/* ========================================
   Header
   ======================================== */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo .highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ========================================
   Buttons
   ======================================== */

.icon-btn {
    background: transparent;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
    color: var(--text-primary);
}

.icon-btn:hover {
    background: var(--bg-tertiary);
}

.primary-btn, .test-btn, .install-btn-action {
    background: var(--accent-gradient);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.primary-btn:hover, .test-btn:hover, .install-btn-action:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.danger-btn {
    background: var(--error);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.danger-btn:hover {
    opacity: 0.9;
}

/* ========================================
   Chat Container
   ======================================== */

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
.messages::-webkit-scrollbar {
    width: 8px;
}

.messages::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.messages::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

.messages::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* ========================================
   Welcome Message
   ======================================== */

.welcome-message {
    text-align: center;
    padding: var(--spacing-xl);
    animation: fadeIn 0.6s ease-out;
}

.welcome-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

.welcome-message h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.feature-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.pill {
    background: var(--bg-card);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    border: 1px solid var(--bg-tertiary);
}

/* ========================================
   Message Bubbles
   ======================================== */

.message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: slideIn 0.3s ease-out;
}

.message.user {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background: var(--accent-gradient);
}

.message.assistant .message-avatar {
    background: var(--bg-tertiary);
}

.message-content {
    max-width: 70%;
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    position: relative;
}

.message.user .message-content {
    background: var(--accent-gradient);
}

.message-text {
    word-wrap: break-word;
}

.message-image {
    margin-top: var(--spacing-sm);
    border-radius: var(--radius-sm);
    max-width: 100%;
    height: auto;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.message-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.message-action-btn {
    background: transparent;
    border: 1px solid var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.message-action-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
}

/* ========================================
   Input Area
   ======================================== */

.input-area {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-top: 1px solid var(--bg-tertiary);
}

.input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    border: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
}

.voice-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--accent-gradient);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.voice-btn:hover {
    transform: scale(1.05);
}

.voice-btn:active {
    transform: scale(0.95);
}

.voice-btn.listening {
    animation: pulse 1s infinite;
    background: var(--error);
}

.message-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

.message-input::placeholder {
    color: var(--text-muted);
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: none;
    background: var(--accent-primary);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--accent-secondary);
    transform: translateX(2px);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.input-status {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-height: 20px;
}

/* ========================================
   Modal
   ======================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-out;
    padding: var(--spacing-lg);
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--bg-tertiary);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

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

.setting-section {
    margin-bottom: var(--spacing-xl);
}

.setting-section h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.setting-group {
    margin-bottom: var(--spacing-md);
}

.setting-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.setting-group input[type="text"],
.setting-group input[type="password"],
.setting-group select,
.setting-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.setting-group input[type="range"] {
    width: calc(100% - 60px);
    margin-right: var(--spacing-sm);
}

.setting-group input[type="checkbox"] {
    margin-right: var(--spacing-sm);
}

.setting-group textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

/* ========================================
   Image Result
   ======================================== */

.image-result {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.image-result.hidden {
    display: none;
}

.image-result img {
    max-width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.image-loading {
    padding: var(--spacing-xl);
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

/* ========================================
   Install Banner
   ======================================== */

.install-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gradient);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    animation: slideUp 0.5s ease-out;
    z-index: 999;
}

.install-banner.hidden {
    display: none;
}

.dismiss-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .messages {
        padding: var(--spacing-md);
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .input-area {
        padding: var(--spacing-md);
    }
    
    .welcome-message {
        padding: var(--spacing-lg);
    }
    
    .welcome-icon {
        font-size: 3rem;
    }
    
    .welcome-message h2 {
        font-size: 1.5rem;
    }
}