/* Classic Light Theme Design System */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f4f4f5;
    --bg-sidebar: #f9f9fb;
    --text-primary: #18181b;
    --text-secondary: #52525b;
    --text-muted: #a1a1aa;
    
    --accent: #10a37f; /* Classic AI green */
    --accent-light: #15b791;
    --accent-dark: #0e8568;
    --accent-glow: rgba(16, 163, 127, 0.1);
    
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    --glass-bg: #ffffff;
    --glass-border: #e4e4e7;
    --glass-border-hover: #d4d4d8;
    --glass-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.05);
    
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --transition: all 0.15s ease;
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', var(--font-sans);
}

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

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

button, input, select, textarea {
    font-family: inherit;
    color: inherit;
    outline: none;
}

/* Password Lock Screen Overlay */
.lock-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #f4f4f5;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.lock-card {
    background-color: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    width: 380px;
    max-width: 90%;
    text-align: center;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

.lock-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: rgba(16, 163, 127, 0.08);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin: 0 auto 20px auto;
}

.lock-card h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.lock-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 24px;
}

.lock-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.lock-input-group input {
    flex: 1;
    background-color: #fafafa;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.95rem;
    transition: var(--transition);
    color: var(--text-primary);
}

.lock-input-group input:focus {
    border-color: var(--accent);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.12);
}

.lock-input-group button {
    background-color: var(--accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.lock-input-group button:hover {
    background-color: var(--accent-dark);
}

.lock-error-text {
    color: var(--danger) !important;
    font-size: 0.82rem !important;
    margin-top: 8px;
    margin-bottom: 0 !important;
    min-height: 18px;
}

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

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: var(--transition);
    z-index: 100;
}

.sidebar-header {
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo i {
    color: var(--accent);
}

.new-chat-btn {
    margin: 15px 20px;
    padding: 10px;
    background-color: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.new-chat-btn:hover {
    background-color: var(--bg-secondary);
    border-color: var(--glass-border-hover);
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 0 15px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Custom scrollbars */
::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.08);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.15);
}

.chat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    background: transparent;
    border: 1px solid transparent;
    transition: var(--transition);
    text-align: left;
}

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

.chat-item.active {
    background-color: rgba(16, 163, 127, 0.08);
    border-color: rgba(16, 163, 127, 0.15);
    color: var(--accent-dark);
}

.chat-item-content {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.chat-item-content i {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.chat-item.active .chat-item-content i {
    color: var(--accent);
}

.chat-item-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.88rem;
    font-weight: 500;
}

.delete-chat-btn {
    opacity: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.chat-item:hover .delete-chat-btn {
    opacity: 1;
}

.delete-chat-btn:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.08);
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sync-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    background: #fafafa;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    transition: var(--transition);
}

.sync-status i {
    font-size: 0.85rem;
    color: var(--accent);
}

.sync-status.offline i {
    color: var(--danger);
}

.sync-status.syncing i {
    color: var(--warning);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    background: #fafafa;
    border: 1px solid var(--glass-border);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

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

.status-indicator.error .status-dot {
    background-color: var(--danger);
}

.status-indicator.connecting .status-dot {
    background-color: var(--warning);
}

.status-text {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-secondary);
}

.footer-actions {
    display: flex;
    gap: 8px;
}

.footer-btn {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: var(--transition);
    color: var(--text-secondary);
}

.footer-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--glass-border-hover);
}

/* Chat Area */
.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    position: relative;
    min-width: 0;
    overflow-x: hidden;
}

.chat-header {
    height: 60px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    background-color: #ffffff;
    z-index: 50;
}

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

.icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    color: var(--text-secondary);
}

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

.menu-btn {
    display: none;
}

.model-select-wrapper {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    padding: 5px 10px;
    border-radius: var(--radius-md);
    gap: 6px;
}

.model-icon {
    color: var(--accent);
    font-size: 0.88rem;
}

#modelSelect {
    background: transparent;
    border: none;
    outline: none;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding-right: 5px;
    max-width: 180px;
    color: var(--text-primary);
}

#modelSelect option {
    background-color: #ffffff;
    color: var(--text-primary);
}

.reload-models-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
    font-size: 0.8rem;
    padding: 2px;
}

.reload-models-btn:hover {
    color: var(--accent);
}

.utm-stats {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: #fafafa;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
}

.utm-stats i {
    color: var(--accent);
}

.utm-stats.offline {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.05);
    border-color: rgba(239, 68, 68, 0.1);
}

.utm-stats.offline i {
    color: var(--danger);
}

/* Messages container */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 25px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Welcome Screen */
.welcome-screen {
    max-width: 680px;
    margin: 30px auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.welcome-icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    background: var(--accent);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 8px;
}

.welcome-screen h1 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.welcome-screen p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    max-width: 480px;
    margin-bottom: 15px;
}

.welcome-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    width: 100%;
}

.feature-card {
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 15px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.feature-card:hover {
    background: var(--bg-sidebar);
}

.feature-card i {
    font-size: 1.25rem;
    color: var(--accent);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Chat Messages */
.message-row {
    display: flex;
    gap: 12px;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.message-row.user-row {
    justify-content: flex-end;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.user-row .avatar {
    display: none;
}

.assistant-row .avatar {
    background-color: rgba(16, 163, 127, 0.08);
    border: 1px solid rgba(16, 163, 127, 0.15);
    color: var(--accent);
}

.message-content {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    line-height: 1.55;
    word-break: break-word;
}

.user-row .message-content {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-bottom-right-radius: 3px;
    border: 1px solid var(--glass-border);
}

.assistant-row .message-content {
    background-color: #ffffff;
    border: 1px solid var(--glass-border);
    border-bottom-left-radius: 3px;
}

/* Markdown Styling in Messages */
.message-content p {
    margin-bottom: 10px;
}
.message-content p:last-child {
    margin-bottom: 0;
}

.message-content h1, .message-content h2, .message-content h3 {
    margin: 12px 0 8px 0;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-primary);
}
.message-content h1 { font-size: 1.2rem; }
.message-content h2 { font-size: 1.1rem; }
.message-content h3 { font-size: 1rem; }

.message-content ul, .message-content ol {
    margin-left: 18px;
    margin-bottom: 10px;
}

.message-content li {
    margin-bottom: 3px;
}

.message-content code {
    font-family: Consolas, Monaco, monospace;
    font-size: 0.8rem;
    background: #f1f1f3;
    color: #c7254e;
    padding: 2px 4px;
    border-radius: 3px;
}

.message-content pre {
    margin: 12px 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.message-content pre code {
    display: block;
    padding: 12px;
    overflow-x: auto;
    background: #18181b !important;
    color: #f4f4f5 !important;
    font-size: 0.82rem;
    line-height: 1.4;
}

/* Typing cursor */
.typing-cursor {
    display: inline-block;
    width: 5px;
    height: 13px;
    background-color: var(--accent);
    margin-left: 2px;
    vertical-align: middle;
    animation: cursorBlink 0.8s infinite;
}

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

/* Input Container */
.input-container {
    padding: 15px 25px 20px 25px;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--glass-border);
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background-color: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    display: flex;
    align-items: flex-end;
    gap: 10px;
    transition: var(--transition);
}

.input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.08);
}

#chatInput {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    font-size: 0.92rem;
    max-height: 150px;
    min-height: 24px;
    line-height: 1.45;
    padding: 2px 0;
    color: var(--text-primary);
}

#chatInput::placeholder {
    color: var(--text-muted);
}

/* Web Search Button inside input-wrapper */
.web-search-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

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

.web-search-btn.active {
    background-color: rgba(16, 163, 127, 0.08);
    border-color: rgba(16, 163, 127, 0.15);
    color: var(--accent);
}

.send-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--accent);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
    color: #ffffff;
    transition: var(--transition);
    flex-shrink: 0;
}

.send-btn:hover:not(:disabled) {
    background: var(--accent-light);
}

.send-btn:disabled {
    background: #fafafa;
    color: var(--text-muted);
    border: 1px solid var(--glass-border);
    cursor: not-allowed;
}

.input-footer-text {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.modal-backdrop.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background-color: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    width: 460px;
    max-width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    transform: scale(0.97);
    transition: transform 0.15s ease;
}

.modal-backdrop.open .modal {
    transform: scale(1);
}

.modal-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-body {
    padding: 18px 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group.row {
    flex-direction: row;
    gap: 12px;
}

.form-group.row .col {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    background-color: #fafafa;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 8px 12px;
    font-size: 0.88rem;
    outline: none;
    transition: var(--transition);
    color: var(--text-primary);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent);
    background-color: #ffffff;
}

.password-input-wrapper {
    position: relative;
    display: flex;
}

.password-input-wrapper input {
    width: 100%;
    padding-right: 35px;
}

.toggle-password-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.form-text {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.danger-zone {
    margin-top: 5px;
    border: 1px dashed rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 12px;
    background: rgba(239, 68, 68, 0.01);
}

.danger-zone h3 {
    color: var(--danger);
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.danger-btn {
    width: 100%;
    background: rgba(239, 68, 68, 0.05);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    padding: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.danger-btn:hover {
    background: var(--danger);
    color: #ffffff;
}

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: flex-end;
}

.primary-btn {
    background-color: var(--accent);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 16px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.primary-btn:hover {
    background-color: var(--accent-dark);
}

/* Close modal btn */
.close-modal-btn {
    color: var(--text-secondary);
}

/* Sidebar Backdrop for Mobile */
.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
    z-index: 999;
}

.sidebar-backdrop.open {
    opacity: 1;
    visibility: visible;
}

/* Responsive styles */
@media (max-width: 768px) {
    .menu-btn {
        display: flex;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        will-change: transform;
        z-index: 1000;
        box-shadow: 4px 0 15px rgba(0,0,0,0.12);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .chat-header {
        padding: 0 12px;
    }
    
    .messages-container {
        padding: 12px 10px;
    }
    
    .message-content {
        max-width: 95%;
    }
    
    .welcome-features {
        grid-template-columns: 1fr;
        gap: 12px;
        margin-top: 15px;
    }

    .welcome-screen h1 {
        font-size: 1.7rem;
    }

    /* Prevent mobile input zooming and adjust layouts */
    .input-container {
        padding: 10px 12px 12px 12px;
    }

    .input-wrapper {
        padding: 6px 10px;
        gap: 8px;
    }

    #chatInput {
        font-size: 16px; /* Prevents auto zoom-in on iOS Safari */
    }

    .file-badge {
        max-width: 180px;
        padding: 5px 10px;
    }

    #modelSelect {
        max-width: 120px;
    }
    
    .utm-stats {
        padding: 5px 8px;
        font-size: 0.72rem;
        max-width: 135px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

/* Attachment & File Upload Styling */
.attachment-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.attachment-btn:hover {
    background-color: var(--hover-light);
    color: var(--accent);
}

.upload-preview-container {
    max-width: 800px;
    margin: 0 auto 10px auto;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 4px;
}

.file-badge {
    background-color: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    max-width: 240px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.file-badge i {
    color: var(--accent);
    font-size: 0.9rem;
}

.file-badge .remove-file {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-muted);
    padding: 0;
    margin-left: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.file-badge .remove-file:hover {
    color: #ef4444;
}

/* Mode Tab Button Styling */
.header-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.mode-tabs {
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    padding: 3px;
    border-radius: var(--radius-md);
    gap: 2px;
}

.mode-tab-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.mode-tab-btn i {
    font-size: 0.85rem;
}

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

.mode-tab-btn.active {
    background: #ffffff;
    color: var(--accent);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* Hide text on mobile tabs to save space */
@media (max-width: 480px) {
    .mode-tab-btn span {
        display: none;
    }
    .mode-tab-btn {
        padding: 6px 10px;
    }
}

/* Terminal View Styles */
.terminal-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #0d1117; /* GitHub Dark BG */
    color: #c9d1d9;
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    font-size: 0.85rem;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid var(--glass-border);
}

.terminal-header {
    background: #161b22;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #30363d;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dots .dot.red { background: #f85149; }
.terminal-dots .dot.yellow { background: #d29922; }
.terminal-dots .dot.green { background: #3fb950; }

.terminal-title {
    font-size: 0.75rem;
    color: #8b949e;
    font-weight: 600;
}

.clear-terminal-btn {
    background: transparent;
    border: none;
    color: #8b949e;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.clear-terminal-btn:hover {
    color: #ff5f56;
}

.terminal-output {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.terminal-line {
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.4;
}

.terminal-line.system-welcome {
    color: #58a6ff;
}

.terminal-line.user-command {
    color: #ff7b72;
    font-weight: bold;
    margin-top: 10px;
}

.terminal-prompt {
    color: #3fb950;
    margin-right: 8px;
}

.terminal-result {
    color: #c9d1d9;
    background: transparent;
    padding: 0;
    margin: 0;
    font-family: inherit;
    font-size: inherit;
    white-space: pre-wrap;
    word-break: break-all;
    line-height: 1.45;
}

.terminal-line.loading-line {
    color: #d29922;
    font-style: italic;
}