/* CXAI Studio — Enhanced Dark Theme UI */

/* ==========================================================================
   Design System — CSS Custom Properties
   ========================================================================== */
:root {
    /* Core colors */
    --bg: #0f1117;
    --bg-surface: #12151f;
    --bg-card: #1a1d2e;
    --bg-input: #252836;
    --bg-hover: #2d3148;
    --border: #2a2e42;
    --border-hover: #3d4266;
    --text: #e8eaf6;
    --text-secondary: #8b90a8;
    --text-muted: #6b7089;

    /* Accent */
    --accent: #7c6ff7;
    --accent-hover: #8f82ff;
    --accent-gradient: linear-gradient(135deg, #6c5ce7, #a855f7);
    --accent-glow: rgba(124, 111, 247, 0.25);

    /* Semantic */
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.25);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.25);
    --warning: #f59e0b;
    --info: #3b82f6;

    /* Glassmorphism */
    --glass-bg: rgba(26, 29, 46, 0.65);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-blur: 16px;

    /* Glow shadows */
    --glow-accent: 0 0 12px rgba(124, 111, 247, 0.35);
    --glow-success: 0 0 12px rgba(16, 185, 129, 0.35);
    --glow-danger: 0 0 12px rgba(239, 68, 68, 0.35);

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-collapsed: 68px;
    --header-height: 56px;

    /* Radius */
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --fast: 0.15s ease;
    --normal: 0.25s ease;
    --slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 currentColor; }
    50% { box-shadow: 0 0 8px 2px currentColor; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes typingDot {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

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

.fade-in { animation: fadeIn var(--normal) both; }
.slide-in { animation: slideInLeft var(--normal) both; }

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-input) 25%, #2a2e3e 50%, var(--bg-input) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius);
    min-height: 1em;
    min-width: 3em;
}

/* ==========================================================================
   Login Overlay
   ========================================================================== */
#login-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(-45deg, #0f1117, #1a1d3a, #2d1b69, #0f1117);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
#login-overlay.hidden { display: none; }

.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    animation: fadeIn var(--slow) both;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.login-card .logo {
    font-size: 48px;
    margin-bottom: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--accent-gradient);
}

.login-card h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .subtitle {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 32px;
}

.login-input-group {
    margin-bottom: 16px;
    text-align: left;
}

.login-input-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding-right: 40px;
}

.input-icon-btn {
    position: absolute;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    transition: color var(--fast);
}
.input-icon-btn:hover { color: var(--text); }
.input-icon-btn svg { width: 18px; height: 18px; }

.login-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--fast);
    margin-top: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.login-btn:hover { box-shadow: var(--glow-accent); transform: translateY(-1px); }
.login-btn:active { transform: translateY(0); }
.login-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

.login-error {
    color: var(--danger);
    font-size: 13px;
    margin-top: 12px;
    min-height: 20px;
}

.login-hint {
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 16px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    margin-top: 12px;
    justify-content: center;
}
.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

.login-error.shake { animation: shake 0.4s ease; }

/* ==========================================================================
   Sidebar Layout
   ========================================================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 50;
    transition: width var(--normal);
    overflow: hidden;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed);
}

.sidebar.collapsed .sidebar-brand,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .sidebar-footer-text {
    display: none;
}

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

.sidebar-logo {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--accent-gradient);
    flex-shrink: 0;
    color: white;
}
.sidebar-logo svg { width: 20px; height: 20px; }

.sidebar-brand {
    font-size: 18px;
    font-weight: 700;
    white-space: nowrap;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-toggle {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--fast), color var(--fast);
    flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--bg-input); color: var(--text); }
.sidebar-toggle svg { width: 18px; height: 18px; }

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    background: none;
    border: none;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--fast);
    white-space: nowrap;
    width: 100%;
    text-align: left;
}
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.nav-item:hover { color: var(--text); background: var(--bg-input); }
.nav-item.active {
    color: white;
    background: var(--accent-gradient);
    box-shadow: var(--glow-accent);
}

.nav-section-label {
    padding: 16px 12px 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Main wrapper shifts right for sidebar */
.main-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--normal);
}
.sidebar.collapsed ~ .main-wrapper {
    margin-left: var(--sidebar-collapsed);
}

/* ==========================================================================
   Header
   ========================================================================== */
header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    min-height: var(--header-height);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: var(--radius);
    transition: background var(--fast);
}
.mobile-menu-btn:hover { background: var(--bg-input); }
.mobile-menu-btn svg { width: 22px; height: 22px; }

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* User menu */
#user-menu { position: relative; }

#user-btn {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    padding: 6px 12px;
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: border-color var(--fast);
    white-space: nowrap;
}
#user-btn:hover { border-color: var(--accent); }

#user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-width: 180px;
    display: none;
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
#user-dropdown.show { display: block; }
#user-dropdown .dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    background: none;
    border: none;
    color: var(--text);
    text-align: left;
    font-size: 13px;
    cursor: pointer;
    transition: background var(--fast);
}
#user-dropdown .dropdown-item:hover { background: var(--bg-input); }
#user-dropdown .dropdown-item.danger { color: var(--danger); }
#user-dropdown .dropdown-item svg { width: 16px; height: 16px; }
#user-dropdown .dropdown-divider { border-top: 1px solid var(--border); margin: 4px 0; }

/* Status dot */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    flex-shrink: 0;
}
.status-dot.connected { background: var(--success); animation: pulseGlow 2s infinite; color: var(--success); }
.status-dot.disconnected { background: var(--danger); animation: pulseGlow 2s infinite; color: var(--danger); }

#status-text {
    color: var(--text-muted);
    font-size: 13px;
}

/* ==========================================================================
   Content
   ========================================================================== */
main { flex: 1; padding: 24px; }
.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn var(--normal) both; }

/* ==========================================================================
   Stat Cards
   ========================================================================== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform var(--fast), box-shadow var(--fast);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.stat-icon svg { width: 24px; height: 24px; color: white; }

.stat-icon-accent { background: var(--accent-gradient); }
.stat-icon-success { background: linear-gradient(135deg, #10b981, #34d399); }
.stat-icon-warning { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.stat-icon-info { background: linear-gradient(135deg, #3b82f6, #60a5fa); }

.stat-info { flex: 1; min-width: 0; }
.stat-value { display: block; font-size: 28px; font-weight: 700; line-height: 1.2; }
.stat-label { display: block; font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 16px;
    transition: box-shadow var(--fast);
}
.card:hover { box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.card-header h2 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}
.card-header h2 svg { width: 18px; height: 18px; color: var(--accent); }

/* ==========================================================================
   Grids
   ========================================================================== */
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.memory-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ==========================================================================
   Provider Cards
   ========================================================================== */
.provider-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.provider-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    transition: transform var(--fast), box-shadow var(--fast);
}
.provider-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.provider-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.provider-name { font-weight: 600; font-size: 15px; }
.provider-url { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; word-break: break-all; }
.provider-health { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.provider-health-text { font-size: 13px; }

.latency-bar {
    height: 4px;
    background: var(--bg-input);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 4px;
}
.latency-fill {
    height: 100%;
    border-radius: 2px;
    transition: width var(--normal);
    background: var(--success);
}
.latency-fill.warn { background: var(--warning); }
.latency-fill.slow { background: var(--danger); }

.status-dot.status-unknown { background: var(--text-muted); }

/* ==========================================================================
   Model Cards
   ========================================================================== */
.models-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.model-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: transform var(--fast), box-shadow var(--fast), border-color var(--fast);
}
.model-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: var(--accent);
}

.model-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.model-name { font-weight: 600; font-size: 14px; }
.model-size {
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-input);
    padding: 2px 8px;
    border-radius: 10px;
}

.model-card-details { display: flex; gap: 8px; margin-bottom: 8px; }
.model-detail { font-size: 12px; color: var(--text-muted); }
.model-card-providers { display: flex; flex-wrap: wrap; gap: 4px; }

/* ==========================================================================
   Provider Badges
   ========================================================================== */
.provider-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    background: rgba(124, 111, 247, 0.15);
    border: 1px solid rgba(124, 111, 247, 0.3);
    color: #a8a3f7;
    transition: background var(--fast);
}
.provider-badge.primary {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

/* ==========================================================================
   Tables
   ========================================================================== */
table { width: 100%; border-collapse: separate; border-spacing: 0; }
th {
    padding: 10px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: var(--bg-input);
}
th:first-child { border-radius: var(--radius) 0 0 0; }
th:last-child { border-radius: 0 var(--radius) 0 0; }
td {
    padding: 10px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}
tr { transition: background var(--fast); }
tr:hover { background: rgba(124, 111, 247, 0.05); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    padding: 8px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--fast);
    white-space: nowrap;
}
.btn:hover { border-color: var(--accent); background: rgba(124, 111, 247, 0.1); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn svg { width: 16px; height: 16px; }

.btn-primary {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
    box-shadow: 0 2px 8px rgba(124, 111, 247, 0.3);
}
.btn-primary:hover { box-shadow: var(--glow-accent); }

.btn-secondary {
    background: transparent;
    border-color: var(--border);
    color: var(--text);
}
.btn-secondary:hover { background: var(--bg-input); }

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text); background: var(--bg-input); }

.btn-danger { background: var(--danger); border-color: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.btn-icon svg { width: 18px; height: 18px; }

/* ==========================================================================
   Inputs
   ========================================================================== */
input[type="text"], input[type="number"], input[type="password"], textarea, select {
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color var(--fast), box-shadow var(--fast);
    width: 100%;
}
input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 111, 247, 0.15);
}
textarea { resize: vertical; min-height: 80px; line-height: 1.6; }

.search-wrapper {
    position: relative;
    flex: 1;
    max-width: 400px;
}
.search-wrapper input { padding-left: 36px; }
.search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Chat
   ========================================================================== */
.chat-section {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--header-height) - 48px - 80px);
    min-height: 400px;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    margin-bottom: 12px;
}

/* Chat bubbles */
.chat-bubble {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: var(--radius-lg);
    position: relative;
    animation: fadeIn var(--normal) both;
    line-height: 1.6;
}

.chat-bubble-user {
    align-self: flex-end;
    background: var(--accent);
    color: white;
    border-bottom-right-radius: 4px;
}

.chat-bubble-assistant {
    align-self: flex-start;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    color: var(--text);
    border-bottom-left-radius: 4px;
}

.chat-bubble-error {
    align-self: flex-start;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--danger);
    color: var(--danger);
    border-bottom-left-radius: 4px;
}

.chat-bubble-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}
.chat-bubble-time { font-size: 11px; color: var(--text-muted); }
.chat-bubble-role { font-size: 12px; font-weight: 600; }
.chat-role-user { color: rgba(255, 255, 255, 0.8); }
.chat-role-assistant { color: var(--accent); }
.chat-role-error { color: var(--danger); }

.chat-bubble-content {
    font-size: 14px;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.chat-bubble-meta {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Copy button on assistant bubbles */
.chat-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-muted);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--fast), background var(--fast), color var(--fast);
    display: flex;
    align-items: center;
    justify-content: center;
}
.chat-copy-btn svg { width: 14px; height: 14px; }
.chat-bubble:hover .chat-copy-btn { opacity: 1; }
.chat-copy-btn:hover { background: rgba(255, 255, 255, 0.2); color: var(--text); }

/* Thinking/reasoning panel */
.thinking-panel {
    margin-bottom: 8px;
    border-left: 3px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: rgba(124, 111, 247, 0.08);
    overflow: hidden;
    transition: max-height var(--normal);
}

.thinking-panel.collapsed { max-height: 40px; }
.thinking-panel.expanded { max-height: 600px; overflow-y: auto; }

.thinking-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    user-select: none;
}
.thinking-header:hover { background: rgba(124, 111, 247, 0.12); }
.thinking-icon { font-size: 14px; }
.thinking-toggle {
    font-size: 10px;
    transition: transform var(--fast);
}
.thinking-panel.expanded .thinking-toggle { transform: rotate(90deg); }

.thinking-content {
    padding: 0 12px 10px;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* Typing indicator */
.typing-indicator {
    align-self: flex-start;
    padding: 16px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    border-bottom-left-radius: 4px;
}

.typing-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}
.typing-dots span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    animation: typingDot 1.4s infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

/* Chat input bar */
.chat-input-bar {
    padding: 12px 0 0 0;
    background: transparent;
}

.chat-input-wrapper {
    display: flex;
    gap: 8px;
    align-items: center;
}

.chat-input-wrapper input {
    flex: 1;
    padding: 12px 20px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 24px;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: border-color var(--fast), box-shadow var(--fast);
}
.chat-input-wrapper input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(124, 111, 247, 0.15);
}

.chat-input-options {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
    padding-left: 4px;
}

/* ==========================================================================
   Toggle Switches
   ========================================================================== */
.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.setting-row:last-child { border-bottom: none; }
.setting-label { font-size: 14px; }

.toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.toggle input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 24px;
    transition: var(--fast);
}
.toggle-slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--fast);
}
.toggle input:checked + .toggle-slider {
    background: var(--accent);
    border-color: var(--accent);
}
.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
    background: white;
}
.toggle input:disabled { cursor: not-allowed; opacity: 0.7; }

/* ==========================================================================
   Toolbar
   ========================================================================== */
.toolbar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.view-toggle {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-muted);
    padding: 6px 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--fast);
}
.view-toggle:hover { color: var(--text); border-color: var(--accent); }
.view-toggle.active { color: var(--accent); border-color: var(--accent); background: rgba(124, 111, 247, 0.1); }
.view-toggle svg { width: 16px; height: 16px; }

/* ==========================================================================
   Results Area
   ========================================================================== */
.results-area {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    min-height: 200px;
    max-height: 600px;
    overflow-y: auto;
    line-height: 1.6;
}
.results-area h3 { color: var(--accent); margin: 12px 0 8px; }
.results-area h4 { color: var(--text-secondary); margin: 8px 0 4px; }
.results-area ul { padding-left: 20px; }
.results-area a { color: var(--accent); }

/* Memory stats bar */
.memory-stats-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.memory-stat {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.memory-stat-value { font-size: 20px; font-weight: 700; }
.memory-stat-label { font-size: 12px; color: var(--text-secondary); }

/* ==========================================================================
   Settings
   ========================================================================== */
.setting-value { font-weight: 500; }

/* ==========================================================================
   Quick Actions
   ========================================================================== */
.quick-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

/* ==========================================================================
   Spinner
   ========================================================================== */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    padding: 12px 24px;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
}

/* ==========================================================================
   Mobile Overlay
   ========================================================================== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 45;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .sidebar { width: var(--sidebar-collapsed); }
    .sidebar .nav-label,
    .sidebar .sidebar-brand,
    .sidebar .sidebar-footer-text { display: none; }
    .main-wrapper { margin-left: var(--sidebar-collapsed); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        position: fixed;
        z-index: 100;
    }
    .sidebar.mobile-open { transform: translateX(0); }
    .sidebar.mobile-open .nav-label,
    .sidebar.mobile-open .sidebar-brand,
    .sidebar.mobile-open .sidebar-footer-text { display: inline; }
    .main-wrapper { margin-left: 0 !important; }
    .mobile-menu-btn { display: flex !important; }
    .sidebar-overlay.active { display: block; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .dashboard-grid, .memory-grid, .settings-grid { grid-template-columns: 1fr; }
    .chat-bubble { max-width: 95%; }
    header { flex-wrap: wrap; }
    .header-right { width: 100%; }
    .provider-cards-grid { grid-template-columns: 1fr; }
    .models-card-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr; }
    main { padding: 12px; }
}