/* CSS Variables - Cyberpunk/Neon Theme */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-hover: #22222f;
    --text-primary: #e8e8f0;
    --text-secondary: #9898a8;
    --text-muted: #606078;
    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --border-color: #2a2a3a;
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.15);
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: all 0.2s ease;
    --border-radius: 12px;
    --border-radius-sm: 8px;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-glow);
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.new-chat-btn {
    margin: 16px;
    padding: 12px 16px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.new-chat-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-icon {
    font-size: 18px;
    font-weight: 600;
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.chat-history-item {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-history-item:hover {
    background: var(--bg-hover);
}

.chat-history-item.active {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

.chat-history-item .icon {
    color: var(--text-muted);
}

.chat-history-item .title {
    flex: 1;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.model-selector {
    margin-bottom: 12px;
}

.model-selector label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.provider-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.settings-btn {
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

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

/* Version Info */
.version-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 12px;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    font-size: 11px;
}

.version-label {
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.version-value {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-weight: 500;
}

/* API Access Link */
.api-access-link {
    display: block;
    text-align: center;
    margin-top: 12px;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.api-access-link:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    min-width: 0;
}

.chat-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-secondary);
}

.chat-header h1 {
    flex: 1;
    font-size: 18px;
    font-weight: 500;
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
}

.refresh-models-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.refresh-models-btn:hover {
    background: var(--bg-hover);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.welcome-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    animation: fadeIn 0.5s ease;
}

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

.welcome-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-glow);
}

.welcome-container h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-container p {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
}

/* Build Version on Welcome Screen */
.build-version {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    margin-bottom: 30px;
    font-size: 13px;
}

.build-label {
    color: var(--text-muted);
}

.build-value {
    color: var(--accent-primary);
    font-family: var(--font-mono);
    font-weight: 500;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 600px;
}

.quick-action {
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    text-align: left;
    transition: var(--transition);
}

.quick-action:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.qa-icon {
    font-size: 20px;
}

/* Message Bubbles */
.message {
    display: flex;
    gap: 16px;
    max-width: 900px;
    animation: slideIn 0.3s ease;
}

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

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

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

.message-content {
    flex: 1;
    min-width: 0;
}

.message.user .message-content {
    text-align: right;
}

.message-bubble {
    display: inline-block;
    padding: 14px 18px;
    border-radius: var(--border-radius);
    font-size: 15px;
    line-height: 1.6;
    max-width: 100%;
    word-wrap: break-word;
}

.message.user .message-bubble {
    background: var(--accent-gradient);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

.message-meta {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Code blocks in messages */
.message-bubble pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 12px;
    margin: 10px 0;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 13px;
}

.message-bubble code {
    font-family: var(--font-mono);
    font-size: 13px;
}

.message-bubble p code {
    background: var(--bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Typing indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-8px); opacity: 1; }
}

/* Chat Input */
.chat-input-container {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 12px;
    transition: var(--transition);
}

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

.input-wrapper textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 15px;
    resize: none;
    outline: none;
    max-height: 200px;
    line-height: 1.5;
    padding: 8px 0;
}

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

/* Voice Button */
.voice-btn {
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

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

.voice-btn.recording {
    background: var(--error);
    border-color: var(--error);
    color: white;
    animation: pulse-recording 1s infinite;
}

.voice-btn.recording:hover {
    background: #dc2626;
}

@keyframes pulse-recording {
    0%, 100% { 
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    }
    50% { 
        box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
    }
}

.voice-btn.not-supported {
    opacity: 0.4;
    cursor: not-allowed;
}

.send-btn {
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 10px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

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

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.input-hint {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 8px;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.open {
    display: flex;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: scale(0.95) translateY(-20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.settings-section {
    margin-bottom: 24px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.providers-list, .models-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.provider-item, .model-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
}

.provider-item .name, .model-item .name {
    font-weight: 500;
}

.provider-item .status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

.provider-item .status.available { color: var(--success); }
.provider-item .status.unavailable { color: var(--error); }

.api-endpoints {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.endpoint {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
}

.endpoint code {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-primary);
}

.endpoint span {
    color: var(--text-muted);
    font-size: 13px;
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Mobile Responsive */
/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.visible {
    display: block;
    opacity: 1;
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -280px;
        top: 0;
        height: 100%;
        z-index: 100;
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .quick-actions {
        grid-template-columns: 1fr;
    }
    
    .message {
        max-width: 100%;
    }
}