/* ============================================
   RemYA - Assistant IA Personnel
   CSS Variables & Theme System
   ============================================ */

:root {
    /* Colors - Dark Theme (Default) - Monochrome + Red accent */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-hover: #222222;
    --bg-active: #2a2a2a;

    --text-primary: #e8e8e8;
    --text-secondary: #888888;
    --text-muted: #555555;

    --accent: #dc2626;
    --accent-secondary: #991b1b;
    --accent-gradient: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    --accent-glow: 0 0 20px rgba(220, 38, 38, 0.25);

    --success: #22c55e;
    --warning: #eab308;
    --error: #ef4444;

    --border: #222222;
    --border-light: #333333;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.7);

    /* Sizing */
    --sidebar-width: 280px;
    --header-height: 60px;
    --input-height: 80px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #f0f0f0;
    --bg-tertiary: #e5e5e5;
    --bg-hover: #d9d9d9;
    --bg-active: #cccccc;

    --text-primary: #171717;
    --text-secondary: #525252;
    --text-muted: #a3a3a3;

    --border: #d4d4d4;
    --border-light: #e5e5e5;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* ============================================
   Reset & Base
   ============================================ */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    display: flex;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

select {
    cursor: pointer;
}

kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 11px;
    font-family: var(--font-mono);
}

/* ============================================
   Overlay
   ============================================ */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    z-index: 90;
}

.overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Sidebar
   ============================================ */

.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.new-chat-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--accent-gradient);
    color: #fff;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.sidebar-search {
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}

.sidebar-search svg {
    color: var(--text-muted);
    flex-shrink: 0;
}

.sidebar-search input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 0;
    font-size: 14px;
}

.sidebar-search input:focus {
    box-shadow: none;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px 8px;
}

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

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

.conversation-item.active {
    background: var(--bg-active);
}

.conversation-item .conv-icon {
    font-size: 16px;
}

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

.conversation-item .conv-delete {
    opacity: 0;
    padding: 4px;
    border-radius: 4px;
    color: var(--text-muted);
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.conversation-item:hover .conv-delete {
    opacity: 1;
}

.conversation-item .conv-delete:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.conversation-group {
    margin-bottom: 16px;
}

.conversation-group-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 12px 4px;
}

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

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

.model-selector label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.model-selector select {
    width: 100%;
    font-size: 13px;
}

.sidebar-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.sidebar-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast);
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: #fff;
}

.user-name {
    flex: 1;
    font-weight: 500;
    font-size: 14px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: var(--error);
    transition: background var(--transition-normal);
}

.status-indicator.connected {
    background: var(--success);
}

.status-info {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
}

/* ============================================
   Main Content
   ============================================ */

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Header */
.header {
    height: var(--header-height);
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
    flex-shrink: 0;
}

.menu-btn {
    display: none;
    padding: 8px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
}

.logo-icon {
    font-size: 26px;
}

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

.header-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.header-btn {
    padding: 10px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

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

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* Welcome Screen */
.welcome {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    animation: fadeUp 0.5s ease;
}

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

.welcome-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.welcome h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

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

.welcome-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 40px;
}

.capabilities {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    max-width: 800px;
    width: 100%;
    margin-bottom: 32px;
}

.capability {
    padding: 24px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.capability:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: var(--accent-glow);
}

.capability-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.capability h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

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

.shortcuts-hint {
    display: flex;
    gap: 24px;
    color: var(--text-muted);
    font-size: 13px;
}

.shortcuts-hint span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Messages */
.messages {
    flex: 1;
    padding: 20px;
    display: none;
    flex-direction: column;
    gap: 24px;
}

.messages.active {
    display: flex;
}

.message {
    display: flex;
    gap: 16px;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    animation: fadeUp 0.3s ease;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    background: var(--bg-tertiary);
}

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

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

.message-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.message-author {
    font-weight: 600;
    font-size: 14px;
}

.message-time {
    font-size: 12px;
    color: var(--text-muted);
}

.message-actions {
    margin-left: auto;
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message:hover .message-actions {
    opacity: 1;
}

.message-action-btn {
    padding: 6px;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

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

.message-content {
    font-size: 15px;
    line-height: 1.7;
}

.message-content p {
    margin-bottom: 12px;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.message-content ul, .message-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.message-content li {
    margin-bottom: 6px;
}

.message-content code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
}

.message-content pre {
    margin: 16px 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.message-content pre code {
    display: block;
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    overflow-x: auto;
    line-height: 1.5;
}

.code-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    font-size: 12px;
    color: var(--text-muted);
}

.code-block-header + pre {
    margin-top: 0;
}

.code-block-header + pre code {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.copy-code-btn {
    padding: 4px 8px;
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-hover);
    border-radius: 4px;
    transition: background var(--transition-fast);
}

.copy-code-btn:hover {
    background: var(--bg-active);
}

.message-content blockquote {
    margin: 12px 0;
    padding: 12px 16px;
    border-left: 4px solid var(--accent);
    background: var(--bg-secondary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.message-content a {
    color: var(--accent);
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.message-content th, .message-content td {
    padding: 10px 14px;
    border: 1px solid var(--border);
    text-align: left;
}

.message-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

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

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: var(--radius-full);
    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;
    }
}

/* System Message */
.system-message {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--text-secondary);
    max-width: fit-content;
    margin: 0 auto;
}

.system-message.error {
    border-color: var(--error);
    color: var(--error);
}

.system-message.success {
    border-color: var(--success);
    color: var(--success);
}

/* Input Area */
.input-area {
    padding: 16px 20px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
}

.input-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-container:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.input-actions-left, .input-actions-right {
    display: flex;
    gap: 4px;
}

.input-action-btn {
    padding: 8px;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

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

.input-container textarea {
    flex: 1;
    background: transparent;
    border: none;
    padding: 8px 0;
    resize: none;
    max-height: 200px;
    line-height: 1.5;
    display: flex;
    align-items: center;
}

.input-container textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.7;
}

.input-container textarea:focus {
    box-shadow: none;
}

.send-btn {
    padding: 10px;
    background: var(--accent-gradient);
    color: #fff;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
}

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

.input-hint {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 10px;
}

/* ============================================
   Modals
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 100px;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    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);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
}

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

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

.modal-close {
    font-size: 24px;
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

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

/* Command Palette */
.command-palette-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 500px;
    overflow: hidden;
}

.command-search {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.command-search svg {
    color: var(--text-muted);
    flex-shrink: 0;
}

.command-search input {
    flex: 1;
    background: transparent;
    border: none;
    font-size: 16px;
    padding: 0;
}

.command-search input:focus {
    box-shadow: none;
}

.command-list {
    padding: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.command-group {
    margin-bottom: 8px;
}

.command-group-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 12px 4px;
}

.command-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    text-align: left;
    transition: background var(--transition-fast);
}

.command-item:hover, .command-item.selected {
    background: var(--bg-hover);
}

.command-icon {
    font-size: 16px;
}

.command-name {
    flex: 1;
    font-size: 14px;
}

.command-shortcut {
    font-size: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Settings Modal */
.settings-content {
    max-width: 500px;
}

.settings-body {
    padding: 20px 24px;
    max-height: 60vh;
    overflow-y: auto;
}

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

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

.settings-section h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.setting-item {
    margin-bottom: 12px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.setting-item input[type="text"] {
    width: 100%;
}

.toggle-setting {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.toggle-setting label {
    margin-bottom: 0;
}

.toggle-setting input[type="checkbox"] {
    width: 40px;
    height: 22px;
    appearance: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.toggle-setting input[type="checkbox"]::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.toggle-setting input[type="checkbox"]:checked {
    background: var(--accent);
}

.toggle-setting input[type="checkbox"]:checked::before {
    transform: translateX(18px);
    background: #fff;
}

.danger-btn {
    padding: 10px 16px;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: background var(--transition-fast);
}

.danger-btn:hover {
    background: rgba(239, 68, 68, 0.2);
}

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

@media (max-width: 1024px) {
    .capabilities {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .menu-btn {
        display: block;
    }
}

@media (max-width: 600px) {
    :root {
        --header-height: 56px;
    }

    .welcome h1 {
        font-size: 28px;
    }

    .welcome-subtitle {
        font-size: 14px;
    }

    .capabilities {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .capability {
        padding: 16px;
        display: flex;
        align-items: center;
        gap: 16px;
        text-align: left;
    }

    .capability-icon {
        font-size: 28px;
        margin-bottom: 0;
    }

    .capability h3 {
        margin-bottom: 2px;
    }

    .shortcuts-hint {
        display: none;
    }

    .message {
        gap: 12px;
    }

    .message-avatar {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }

    .input-container {
        padding: 10px 12px;
    }
}

/* ============================================
   Scrollbar
   ============================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ============================================
   Prism.js Theme Override
   ============================================ */

code[class*="language-"],
pre[class*="language-"] {
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 13px;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
    color: var(--text-muted);
}

.token.punctuation {
    color: var(--text-secondary);
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
    color: #f87171;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
    color: #4ade80;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
    color: #fbbf24;
}

.token.atrule,
.token.attr-value,
.token.keyword {
    color: #60a5fa;
}

.token.function,
.token.class-name {
    color: #c084fc;
}

.token.regex,
.token.important,
.token.variable {
    color: #f472b6;
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Stop Button
   ============================================ */

.stop-btn {
    padding: 10px 16px;
    background: var(--error);
    color: #fff;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.stop-btn:hover {
    background: #dc2626;
    transform: scale(1.02);
}

.stop-btn svg {
    width: 14px;
    height: 14px;
}

/* ============================================
   Scroll to Bottom Button
   ============================================ */

.scroll-to-bottom {
    position: fixed;
    bottom: 120px;
    right: 30px;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition-fast), visibility var(--transition-fast),
                transform var(--transition-fast), background var(--transition-fast);
    z-index: 50;
}

.scroll-to-bottom.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-bottom:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.scroll-to-bottom svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Generating State
   ============================================ */

.generating .send-btn {
    display: none;
}

.generating .stop-btn {
    display: flex;
}

.input-container .stop-btn {
    display: none;
}

/* Spin animation for loading */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.spin {
    animation: spin 1s linear infinite;
}