/* ================================================
   DataSpeak — Premium UI
   Claude.ai-inspired design with dark/light modes
   ================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Accent */
    --accent: #d97757;
    --accent-hover: #c4663d;
    --accent-glow: rgba(217, 119, 87, 0.15);
    --accent-subtle: rgba(217, 119, 87, 0.08);

    /* Transitions */
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.18);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.24);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.3);

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

/* ---------- Dark Theme ---------- */
[data-theme="dark"],
.dark-mode {
    --bg-base: #1f1e1d;
    --bg-surface: #262624;
    --bg-elevated: #2d2c2a;
    --bg-overlay: #353432;
    --bg-hover: rgba(255,255,255,0.05);
    --bg-active: rgba(255,255,255,0.08);
    --bg-input: #2a2927;

    --text-primary: #ececec;
    --text-secondary: #a8a39b;
    --text-muted: #6b6660;
    --text-inverse: #1f1e1d;

    --border: rgba(255,255,255,0.08);
    --border-strong: rgba(255,255,255,0.14);
    --border-focus: var(--accent);

    --sidebar-bg: #262624;
    --sidebar-border: rgba(255,255,255,0.06);

    --input-bg: #2a2927;
    --input-border: rgba(255,255,255,0.1);
    --input-focus: rgba(217, 119, 87, 0.4);

    --card-bg: #262624;
    --card-border: rgba(255,255,255,0.06);

    --scrollbar-thumb: rgba(255,255,255,0.15);
    --code-bg: #1a1918;
}

/* ---------- Light Theme ---------- */
[data-theme="light"],
.light-mode {
    --bg-base: #f9f8f6;
    --bg-surface: #ffffff;
    --bg-elevated: #f4f3f1;
    --bg-overlay: #eeede9;
    --bg-hover: rgba(0,0,0,0.04);
    --bg-active: rgba(0,0,0,0.07);
    --bg-input: #ffffff;

    --text-primary: #1a1918;
    --text-secondary: #5c5752;
    --text-muted: #9b958e;
    --text-inverse: #ffffff;

    --border: rgba(0,0,0,0.08);
    --border-strong: rgba(0,0,0,0.14);
    --border-focus: var(--accent);

    --sidebar-bg: #f4f3f1;
    --sidebar-border: rgba(0,0,0,0.06);

    --input-bg: #ffffff;
    --input-border: rgba(0,0,0,0.12);
    --input-focus: rgba(217, 119, 87, 0.35);

    --card-bg: #ffffff;
    --card-border: rgba(0,0,0,0.06);

    --scrollbar-thumb: rgba(0,0,0,0.18);
    --code-bg: #f0efe9;
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background var(--transition-slow), color var(--transition-slow);
    overflow: hidden;
    height: 100vh;
}

/* ---------- Scrollbars ---------- */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---------- App Shell ---------- */
.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ---------- Sidebar ---------- */
.sidebar {
    width: 260px;
    min-width: 260px;
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width var(--transition), min-width var(--transition), transform var(--transition);
    position: relative;
    z-index: 100;
    flex-shrink: 0;
}

.sidebar-closed {
    width: 64px;
    min-width: 64px;
}

.sidebar-closed .logo-text,
.sidebar-closed .new-chat-btn span,
.sidebar-closed .nav-item span,
.sidebar-closed .nav-section-label,
.sidebar-closed .profile-info,
.sidebar-closed .profile-menu-icon,
.sidebar-closed .theme-toggle span,
.sidebar-closed #recent-chats { display: none; }

.sidebar-closed .new-chat-btn { justify-content: center; padding: 10px; }
.sidebar-closed .nav-item { justify-content: center; padding: 10px; }
.sidebar-closed .profile-btn { justify-content: center; }
.sidebar-closed .theme-toggle { justify-content: center; padding: 10px; }

/* Sidebar Header */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 14px;
    border-bottom: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    min-width: 0;
    overflow: hidden;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent);
    color: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.logo-text { white-space: nowrap; overflow: hidden; }

.sidebar-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 6px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: color var(--transition), background var(--transition);
    flex-shrink: 0;
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

/* New Chat Button */
.new-chat-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 12px 10px;
    padding: 10px 14px;
    background: var(--accent);
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
    overflow: hidden;
}
.new-chat-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 87, 0.35);
    color: white;
}

/* Sidebar Nav */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

.nav-section { margin-bottom: 4px; }

.nav-section-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 10px 16px 4px;
    white-space: nowrap;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    margin: 1px 6px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 450;
    white-space: nowrap;
    overflow: hidden;
    transition: background var(--transition), color var(--transition);
    cursor: pointer;
    border: none;
    background: none;
    width: calc(100% - 12px);
    text-align: left;
}
.nav-item i { width: 18px; flex-shrink: 0; font-size: 0.85rem; }
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--bg-active); color: var(--text-primary); font-weight: 500; }
.nav-item.active i { color: var(--accent); }

/* Session item with 3-dot menu */
.nav-item-wrap {
    position: relative;
    display: flex;
    align-items: center;
    margin: 1px 6px;
    border-radius: var(--radius-md);
    transition: background var(--transition);
}
.nav-item-wrap:hover { background: var(--bg-hover); }
.nav-item-wrap .nav-item {
    flex: 1; margin: 0; border-radius: var(--radius-md);
    padding-right: 6px; width: auto; min-width: 0;
    background: none !important;
}
.nav-item-wrap:hover .nav-item { color: var(--text-primary); }
.nav-session-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 3-dot button */
.nav-session-menu { flex-shrink: 0; position: relative; }
.nav-dots-btn {
    display: none;
    width: 26px; height: 26px; border-radius: 6px; border: none;
    background: none; color: var(--text-muted); cursor: pointer;
    align-items: center; justify-content: center; font-size: 0.8rem;
    margin-right: 4px; transition: background 0.15s, color 0.15s;
}
.nav-item-wrap:hover .nav-dots-btn { display: flex; }
.nav-dots-btn:hover { background: var(--bg-overlay); color: var(--text-primary); }

/* Session dropdown popup */
.session-dropdown {
    display: none;
    position: absolute; right: 0; top: calc(100% + 4px);
    background: var(--card-bg); border: 1px solid var(--border);
    border-radius: 10px; padding: 4px;
    min-width: 140px; z-index: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.session-dropdown.open { display: block; }
.session-dropdown-item {
    display: flex; align-items: center; gap: 8px;
    width: 100%; padding: 8px 12px; border: none; border-radius: 7px;
    background: none; color: var(--text-secondary); font-size: 0.82rem;
    cursor: pointer; text-align: left;
    transition: background 0.12s, color 0.12s;
}
.session-dropdown-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.session-dropdown-item.danger { color: #f87171; }
.session-dropdown-item.danger:hover { background: rgba(239,68,68,0.1); color: #f87171; }
.session-dropdown-item i { width: 14px; font-size: 0.78rem; }

/* Skeleton loaders */
.nav-skeleton {
    height: 10px;
    background: var(--bg-overlay);
    border-radius: var(--radius-full);
    margin: 8px 14px;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}
.nav-skeleton.short { width: 65%; }
@keyframes skeleton-pulse { 0%, 100% { opacity: 0.6; } 50% { opacity: 0.3; } }

/* Sidebar Footer */
.sidebar-footer {
    padding: 8px 6px 12px;
    border-top: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-family: var(--font);
    font-weight: 450;
    white-space: nowrap;
    overflow: hidden;
    transition: background var(--transition), color var(--transition);
    text-align: left;
}
.theme-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }
.theme-toggle i { width: 18px; font-size: 0.85rem; flex-shrink: 0; }

/* User Profile */
.user-profile { position: relative; }

.profile-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font);
    transition: background var(--transition);
    overflow: hidden;
}
.profile-btn:hover { background: var(--bg-hover); }

.avatar {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent) 0%, #c4663d 100%);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
    letter-spacing: 0.02em;
}

.profile-info {
    flex: 1;
    min-width: 0;
    text-align: left;
}
.profile-name {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.profile-email {
    display: block;
    font-size: 0.73rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.profile-menu-icon { color: var(--text-muted); font-size: 0.75rem; flex-shrink: 0; }

.profile-dropdown {
    position: absolute;
    bottom: calc(100% + 4px);
    left: 6px;
    right: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 4px;
    box-shadow: var(--shadow-lg);
    z-index: 200;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    font-family: var(--font);
    transition: background var(--transition);
}
.dropdown-item:hover { background: var(--bg-hover); }
.dropdown-item.text-danger { color: #f87171; }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ---------- Main Content ---------- */
.main-content {
    flex: 1;
    height: 100vh;
    overflow-y: auto;
    background: var(--bg-base);
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* Mobile Header */
.mobile-header {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}
.mobile-menu-btn, .mobile-theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.1rem;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
}
.mobile-menu-btn:hover, .mobile-theme-btn:hover { color: var(--text-primary); }
.mobile-title { flex: 1; font-weight: 600; font-size: 1rem; color: var(--text-primary); text-align: center; }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
    backdrop-filter: blur(2px);
}

/* =============================================
   HOME PAGE — Chat Interface
   ============================================= */
.home-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 40px 24px;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

.home-greeting {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
    letter-spacing: -0.03em;
    text-align: center;
}

.home-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    text-align: center;
}

/* Prompt Input Box */
.prompt-container {
    width: 100%;
    max-width: 720px;
    position: relative;
    animation: slideUp 0.5s ease 0.1s both;
}

.prompt-box {
    background: var(--bg-surface);
    border: 1.5px solid var(--border-strong);
    border-radius: var(--radius-xl);
    padding: 16px 20px;
    box-shadow: var(--shadow-md);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.prompt-box:focus-within {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-md), 0 0 0 3px var(--input-focus);
}

.prompt-textarea {
    width: 100%;
    background: none;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font);
    font-size: 0.97rem;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 56px;
    max-height: 220px;
    overflow-y: auto;
}
.prompt-textarea::placeholder { color: var(--text-muted); }

.prompt-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.db-selector {
    flex: 1;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 7px 12px;
    font-size: 0.84rem;
    color: var(--text-secondary);
    font-family: var(--font);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition);
}
.db-selector:focus { border-color: var(--accent); }
.db-selector option { background: var(--bg-elevated); }

/* Desktop: keep db selector compact */
.chat-db-select { max-width: 200px; flex: 0 1 200px; }

.prompt-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: background var(--transition), transform var(--transition);
    flex-shrink: 0;
}
.prompt-btn-ghost {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}
.prompt-btn-ghost:hover { background: var(--bg-overlay); color: var(--text-primary); }
.prompt-btn-ghost.recording {
    background: #fee2e2; color: #dc2626;
    animation: mic-pulse 1s ease-in-out infinite;
}
@keyframes mic-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(220,38,38,.4); }
    50%       { box-shadow: 0 0 0 6px rgba(220,38,38,0); }
}

.prompt-btn-send {
    background: var(--accent);
    color: white;
    width: 42px;
    height: 42px;
}
.prompt-btn-send:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(1.05);
}
.prompt-btn-send:disabled { opacity: 0.5; cursor: not-allowed; }

/* Quick Suggestion Cards */
.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
    width: 100%;
    max-width: 720px;
    margin-top: 24px;
    animation: slideUp 0.5s ease 0.2s both;
}

.suggestion-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 14px 16px;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    text-align: left;
}
.suggestion-card:hover {
    background: var(--bg-elevated);
    border-color: var(--accent);
    transform: translateY(-2px);
}
.suggestion-card .suggestion-icon {
    font-size: 1.2rem;
    margin-bottom: 8px;
    display: block;
}
.suggestion-card .suggestion-text {
    font-size: 0.84rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* =============================================
   CHAT PAGE
   ============================================= */
.chat-page {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    flex-shrink: 0;
}
.chat-title { font-weight: 500; font-size: 0.95rem; color: var(--text-primary); flex: 1; min-width: 0; }
.chat-db-badge {
    font-size: 0.75rem;
    background: var(--accent-subtle);
    color: var(--accent);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-weight: 500;
}

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

/* Message Bubbles */
.message {
    display: flex;
    gap: 14px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    animation: slideUp 0.3s ease;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}
.message-avatar.user { background: linear-gradient(135deg, var(--accent) 0%, #c4663d 100%); color: white; }
.message-avatar.ai { background: var(--bg-overlay); color: var(--text-secondary); font-size: 1rem; }

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

.message-content {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.message-time { font-size: 0.73rem; color: var(--text-muted); }

/* SQL Panel */
.sql-panel {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin: 12px 0;
    overflow: hidden;
}

.sql-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--bg-overlay);
    cursor: pointer;
    user-select: none;
}
.sql-panel-title { font-size: 0.82rem; font-weight: 500; color: var(--text-secondary); display: flex; align-items: center; gap: 8px; }
.sql-panel-code {
    padding: 14px;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
    font-size: 0.82rem;
    color: #e0c990;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* Chart Container */
.chart-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 12px 0;
    box-shadow: var(--shadow-sm);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}
.chart-title { font-weight: 500; font-size: 0.9rem; color: var(--text-primary); }
.chart-actions { display: flex; gap: 6px; }

.chart-type-switcher {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
.chart-type-btn {
    padding: 5px 12px;
    font-size: 0.78rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}
.chart-type-btn:hover { border-color: var(--accent); color: var(--accent); }
.chart-type-btn.active { background: var(--accent); border-color: var(--accent); color: white; }

.chart-body { padding: 20px; min-height: 160px; position: relative; overflow: hidden; }

.chart-resize-handle {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 18px;
    cursor: ns-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
    user-select: none;
}
.chart-container:hover .chart-resize-handle { opacity: 1; }
.chart-resize-handle:hover { background: rgba(255,255,255,0.03); }

.chart-resize-grip {
    display: block;
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    transition: background 0.15s;
}
.chart-resize-handle:hover .chart-resize-grip { background: var(--accent); }

/* KPI Card */
.kpi-card {
    text-align: center;
    padding: 32px;
}
.kpi-value {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.04em;
    line-height: 1;
}
.kpi-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 8px; }

/* Data Table */
.data-table-wrapper { overflow-x: auto; }
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}
.data-table th {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.77rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.data-table td {
    padding: 9px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-hover); }

/* Follow-up Prompts */
.followup-prompts {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 10px;
}
.followup-prompts-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 2px;
}
.followup-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 13px;
    font-size: 0.81rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font);
    text-align: left;
    transition: all .15s;
    line-height: 1.3;
}
.followup-btn::before {
    content: '↗';
    font-size: 0.72rem;
    color: var(--accent);
    flex-shrink: 0;
    opacity: 0.7;
}
.followup-btn:hover {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateX(2px);
}
.followup-btn:hover::before { opacity: 1; }

/* Error Message */
.error-msg {
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: #f87171;
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Loading Indicator — radial spinner */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 0;
}
.ds-spinner {
    position: relative;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}
.ds-spinner span {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 3.5px;
    height: 9px;
    margin-left: -1.75px;
    margin-top: -18px;
    border-radius: 3px;
    background: var(--accent);
    transform-origin: 50% 18px;
    opacity: 0.15;
    animation: ds-bar-fade 1.2s linear infinite;
}
.ds-spinner span:nth-child(1)  { transform:rotate(0deg);    animation-delay:-1.1s; }
.ds-spinner span:nth-child(2)  { transform:rotate(30deg);   animation-delay:-1.0s; }
.ds-spinner span:nth-child(3)  { transform:rotate(60deg);   animation-delay:-0.9s; }
.ds-spinner span:nth-child(4)  { transform:rotate(90deg);   animation-delay:-0.8s; }
.ds-spinner span:nth-child(5)  { transform:rotate(120deg);  animation-delay:-0.7s; }
.ds-spinner span:nth-child(6)  { transform:rotate(150deg);  animation-delay:-0.6s; }
.ds-spinner span:nth-child(7)  { transform:rotate(180deg);  animation-delay:-0.5s; }
.ds-spinner span:nth-child(8)  { transform:rotate(210deg);  animation-delay:-0.4s; }
.ds-spinner span:nth-child(9)  { transform:rotate(240deg);  animation-delay:-0.3s; }
.ds-spinner span:nth-child(10) { transform:rotate(270deg);  animation-delay:-0.2s; }
.ds-spinner span:nth-child(11) { transform:rotate(300deg);  animation-delay:-0.1s; }
.ds-spinner span:nth-child(12) { transform:rotate(330deg);  animation-delay:0s; }
@keyframes ds-bar-fade { 0% { opacity: 1; } 100% { opacity: 0.15; } }

/* Chat Input Bar */
.chat-input-bar {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-surface);
    flex-shrink: 0;
}

.chat-input-box {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: var(--radius-xl);
    padding: 10px 12px 10px 16px;
    transition: border-color var(--transition), box-shadow var(--transition);
    max-width: 900px;
    margin: 0 auto;
}
.chat-input-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--input-focus);
}

.chat-textarea {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--font);
    font-size: 0.92rem;
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 24px;
    max-height: 160px;
    overflow-y: auto;
    padding: 2px 0;
}
.chat-textarea::placeholder { color: var(--text-muted); }

/* =============================================
   DATABASES PAGE
   ============================================= */
.page-container {
    padding: 32px;
    width: 100%;
    animation: fadeIn 0.3s ease;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}
.page-title { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.03em; color: var(--text-primary); }
.page-subtitle { font-size: 0.88rem; color: var(--text-secondary); margin-top: 2px; }

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 16px;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-icon {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: var(--accent-subtle);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin-bottom: 10px;
}

.card-title {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-primary);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.card-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}
.card-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.status-dot.green { background: #10b981; box-shadow: 0 0 6px rgba(16, 185, 129, 0.4); }
.status-dot.red { background: #ef4444; }
.status-dot.yellow { background: #f59e0b; }

/* Add DB Card */
.add-card {
    background: transparent;
    border: 1.5px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all var(--transition);
    min-height: 140px;
    color: var(--text-muted);
}
.add-card:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
    transform: translateY(-2px);
}
.add-card i { font-size: 1.3rem; }
.add-card span { font-size: 0.82rem; font-weight: 500; }

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(217, 119, 87, 0.3); color: white; }
.btn:disabled, .btn[disabled] { opacity: 0.38; cursor: not-allowed; pointer-events: none; transform: none !important; box-shadow: none !important; }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover:not(:disabled) { background: var(--bg-overlay); border-color: var(--border-strong); }
.btn-ghost { background: none; color: var(--text-secondary); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-hover); color: var(--text-primary); }
.btn-danger { background: rgba(239, 68, 68, 0.1); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.2); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.15); }
.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-icon { padding: 7px; }

/* =============================================
   SCHEMA PAGE
   ============================================= */

/* Breadcrumb */
.schema-breadcrumb {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.8rem; color: var(--text-muted); margin-bottom: 20px;
}
.schema-breadcrumb a {
    color: var(--text-secondary); text-decoration: none;
    display: flex; align-items: center; gap: 5px;
    transition: color var(--transition);
}
.schema-breadcrumb a:hover { color: var(--accent); }
.schema-breadcrumb .fa-chevron-right { font-size: 0.65rem; }
.schema-breadcrumb-active { color: var(--accent); font-weight: 500; }

/* Page Header */
.schema-page-header {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 20px; margin-bottom: 28px; flex-wrap: wrap;
}
.schema-header-identity { display: flex; align-items: center; gap: 16px; }
.schema-db-avatar {
    width: 56px; height: 56px; border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--db-color) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--db-color) 25%, transparent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: var(--db-color); flex-shrink: 0;
}
.schema-title {
    font-size: 1.4rem; font-weight: 700;
    color: var(--text-primary); margin: 0 0 8px;
}
.schema-meta-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.schema-pill {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 10px; border-radius: var(--radius-full);
    font-size: 0.75rem; font-weight: 500;
}
.schema-pill-provider {
    background: color-mix(in srgb, var(--db-color) 12%, transparent);
    color: var(--db-color);
    border: 1px solid color-mix(in srgb, var(--db-color) 20%, transparent);
}
.schema-pill-ok  { background: rgba(34,197,94,.12); color: #4ade80; border: 1px solid rgba(34,197,94,.2); }
.schema-pill-err { background: rgba(239,68,68,.12);  color: #f87171; border: 1px solid rgba(239,68,68,.2);  }
.schema-last-sync { font-size: 0.76rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.schema-header-actions { display: flex; gap: 10px; flex-shrink: 0; }

/* Error Banner */
.schema-error-banner {
    display: flex; align-items: center; gap: 10px;
    background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.2);
    border-radius: var(--radius-md); padding: 12px 16px;
    color: #f87171; font-size: 0.85rem; margin-bottom: 20px;
}

/* Stats */
.schema-stats-row {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 14px; margin-bottom: 28px;
}
@media (max-width: 768px) { .schema-stats-row { grid-template-columns: repeat(2, 1fr); } }
.schema-stat {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); padding: 18px 20px;
    display: flex; align-items: center; gap: 14px;
    transition: border-color var(--transition), transform var(--transition);
}
.schema-stat:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.schema-stat-icon-wrap {
    width: 42px; height: 42px; border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; flex-shrink: 0;
}
.schema-stat-num { font-size: 1.35rem; font-weight: 700; color: var(--text-primary); line-height: 1.1; }
.schema-stat-lbl { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }

/* Toolbar */
.schema-toolbar {
    display: flex; align-items: center; gap: 12px;
    margin-bottom: 18px; flex-wrap: wrap;
}
.schema-search-wrap {
    flex: 1; min-width: 200px; position: relative;
    display: flex; align-items: center;
}
.schema-search-ico {
    position: absolute; left: 13px; color: var(--text-muted); font-size: 0.85rem; pointer-events: none;
}
.schema-search-input {
    width: 100%; background: var(--input-bg); border: 1px solid var(--input-border);
    border-radius: var(--radius-md); padding: 9px 36px 9px 36px;
    font-size: 0.88rem; color: var(--text-primary); outline: none;
    transition: border-color var(--transition);
}
.schema-search-input:focus { border-color: var(--border-focus); }
.schema-search-clear {
    position: absolute; right: 10px; background: none; border: none;
    cursor: pointer; color: var(--text-muted); font-size: 0.8rem; padding: 4px;
    border-radius: var(--radius-sm); transition: color var(--transition);
}
.schema-search-clear:hover { color: var(--text-primary); }

/* Tables Container */
.schema-tables-container { display: flex; flex-direction: column; gap: 10px; }

/* Table Card */
.schema-table-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: var(--radius-lg); overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.schema-table-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }

/* Table Header Row */
.schema-table-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 18px; cursor: pointer; gap: 12px;
    transition: background var(--transition);
}
.schema-table-head:hover { background: var(--bg-hover); }
.schema-table-lead { display: flex; align-items: center; gap: 12px; min-width: 0; }
.schema-table-icon-box {
    width: 36px; height: 36px; border-radius: var(--radius-md); flex-shrink: 0;
    background: var(--accent-subtle); color: var(--accent);
    display: flex; align-items: center; justify-content: center; font-size: 0.9rem;
}
.schema-table-name { font-size: 0.95rem; font-weight: 600; color: var(--text-primary); }
.schema-table-sub  { font-size: 0.75rem; color: var(--text-muted); margin-top: 1px; }
.schema-table-end  { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.schema-type-summary { display: flex; gap: 5px; flex-wrap: wrap; }
.schema-query-btn  { opacity: 0; transition: opacity var(--transition); }
.schema-table-head:hover .schema-query-btn { opacity: 1; }
.schema-chevron {
    color: var(--text-muted); font-size: 0.75rem;
    transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
}
.schema-chevron-open { transform: rotate(90deg); }

/* Columns List */
.schema-cols-list { border-top: 1px solid var(--border); }
.schema-cols-inner { padding: 0 0 8px; }
.schema-cols-header-row {
    display: flex; justify-content: space-between;
    padding: 8px 18px 6px; font-size: 0.72rem;
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--text-muted); border-bottom: 1px solid var(--border);
}
.schema-col-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 18px; transition: background var(--transition);
}
.schema-col-row:hover { background: var(--bg-hover); }
.schema-col-name-cell { display: flex; align-items: center; gap: 9px; min-width: 0; }
.schema-col-icon { font-size: 0.78rem; width: 14px; text-align: center; flex-shrink: 0; }
.schema-col-name { font-size: 0.86rem; color: var(--text-primary); font-family: 'SF Mono', 'Fira Code', monospace; }
.schema-col-type {
    font-size: 0.72rem; font-weight: 500; font-family: monospace;
    padding: 2px 8px; border-radius: var(--radius-full);
}

/* Data-type colour tokens */
.sct-number { color: #818cf8; }
.sct-text   { color: #38bdf8; }
.sct-date   { color: #34d399; }
.sct-bool   { color: #fbbf24; }
.sct-blob   { color: #f472b6; }
.sct-other  { color: var(--text-muted); }

.schema-col-type.sct-number { background: rgba(99,102,241,.12); }
.schema-col-type.sct-text   { background: rgba(14,165,233,.12);  }
.schema-col-type.sct-date   { background: rgba(16,185,129,.12);  }
.schema-col-type.sct-bool   { background: rgba(251,191,36,.12);  }
.schema-col-type.sct-blob   { background: rgba(244,114,182,.12); }
.schema-col-type.sct-other  { background: var(--bg-elevated);    }

/* Type summary pills (in table header) */
.sct-pill {
    font-size: 0.68rem; font-weight: 500; padding: 2px 7px;
    border-radius: var(--radius-full); font-family: monospace;
}
.sct-pill.sct-number { background: rgba(99,102,241,.15);  color: #818cf8; }
.sct-pill.sct-text   { background: rgba(14,165,233,.15);  color: #38bdf8; }
.sct-pill.sct-date   { background: rgba(16,185,129,.15);  color: #34d399; }

/* Empty state */
.schema-empty-state {
    text-align: center; padding: 80px 20px;
    display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.schema-empty-icon {
    width: 72px; height: 72px; border-radius: var(--radius-xl);
    background: var(--accent-subtle); color: var(--accent);
    display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
    margin-bottom: 8px;
}
.schema-empty-state h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); margin: 0; }
.schema-empty-state p  { font-size: 0.88rem; color: var(--text-muted); margin: 0; max-width: 320px; }

/* No results */
.schema-no-results {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 40px; color: var(--text-muted); font-size: 0.9rem;
}

/* =============================================
   ERD DIAGRAM
   ============================================= */

/* Full-screen modal */
.erd-modal {
    position: fixed; inset: 0; z-index: 2000;
    flex-direction: column;
    background: #0f1117;
}

/* Top bar */
.erd-modal-bar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; height: 52px; flex-shrink: 0;
    background: #161820; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.erd-modal-title {
    font-size: 0.9rem; font-weight: 600; color: #e2e8f0;
    display: flex; align-items: center; gap: 8px;
}
.erd-modal-controls { display: flex; align-items: center; gap: 4px; }
.erd-ctrl-btn {
    width: 32px; height: 32px; border-radius: 6px; border: none;
    background: rgba(255,255,255,0.06); color: #94a3b8; cursor: pointer;
    display: flex; align-items: center; justify-content: center; font-size: 0.82rem;
    transition: background 0.15s, color 0.15s;
}
.erd-ctrl-btn:hover { background: rgba(255,255,255,0.12); color: #e2e8f0; }
.erd-close-btn:hover { background: rgba(239,68,68,0.15); color: #f87171; }
.erd-ctrl-sep { width: 1px; height: 20px; background: rgba(255,255,255,0.1); margin: 0 4px; }

/* Scrollable canvas wrapper */
.erd-canvas-wrap {
    flex: 1; overflow: auto; position: relative;
    background: radial-gradient(circle at 50% 50%, #1a1d2e 0%, #0f1117 100%);
    background-image: radial-gradient(circle at 50% 50%, #1a1d2e 0%, #0f1117 100%),
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 100% 100%, 32px 32px, 32px 32px;
}

/* Canvas */
.erd-canvas {
    position: relative;
    min-width: 100%;
    min-height: 100%;
    transform-origin: 0 0;
}

/* SVG overlay */
.erd-svg {
    position: absolute; inset: 0;
    pointer-events: none; overflow: visible;
}
.erd-line {
    stroke: #d97757; stroke-width: 1.5;
    fill: none; stroke-dasharray: 5 3; opacity: 0.55;
}
.erd-line-dot { fill: #d97757; opacity: 0.8; }

/* Table box */
.erd-table {
    position: absolute;
    width: 240px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.06);
    background: #1e2030;
    user-select: none;
    transition: box-shadow 0.15s;
}
.erd-table:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 0 1px rgba(217,119,87,0.3); }
.erd-dragging { box-shadow: 0 16px 48px rgba(0,0,0,0.7), 0 0 0 1px rgba(217,119,87,0.5) !important; z-index: 100; }

/* Table header */
.erd-table-header {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px;
    background: linear-gradient(135deg, #1e3a5f 0%, #1a3352 100%);
    color: #e2e8f0; font-size: 0.85rem; font-weight: 700;
    cursor: grab; border-bottom: 1px solid rgba(255,255,255,0.08);
    font-family: 'SF Mono', 'Fira Code', monospace;
}
.erd-table-header:active { cursor: grabbing; }
.erd-table-header i { color: #60a5fa; font-size: 0.75rem; }

/* Column rows */
.erd-table-body { padding: 4px 0 6px; }
.erd-col-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 5px 14px; font-size: 0.75rem;
    border-left: 2px solid transparent;
    transition: background 0.1s;
}
.erd-col-row:hover { background: rgba(255,255,255,0.04); }
.erd-pk { border-left-color: #fbbf24; background: rgba(251,191,36,0.04); }
.erd-fk { border-left-color: #d97757; background: rgba(217,119,87,0.04); }
.erd-col-left { display: flex; align-items: center; gap: 7px; min-width: 0; }
.erd-col-name {
    color: #cbd5e1; font-family: 'SF Mono', 'Fira Code', monospace;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 130px;
}
.erd-col-dt { color: #64748b; font-family: monospace; font-size: 0.7rem; flex-shrink: 0; }
.erd-icon-pk    { color: #fbbf24; font-size: 0.68rem; }
.erd-icon-fk    { color: #d97757; font-size: 0.68rem; }
.erd-icon-field { color: #475569; font-size: 0.6rem; }

/* Legend */
.erd-legend {
    display: flex; align-items: center; gap: 20px;
    padding: 8px 20px; flex-shrink: 0;
    background: #161820; border-top: 1px solid rgba(255,255,255,0.06);
    font-size: 0.75rem; color: #64748b;
}
.erd-legend > span { display: flex; align-items: center; gap: 6px; }
.erd-legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.erd-legend-dot.pk { background: #fbbf24; }
.erd-legend-dot.fk { background: #d97757; }
.erd-legend-line {
    width: 28px; height: 2px; display: inline-block;
    background: repeating-linear-gradient(90deg, #d97757 0, #d97757 4px, transparent 4px, transparent 7px);
    opacity: 0.6;
}

/* =============================================
   MODALS
   ============================================= */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.25s ease;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 1.05rem; font-weight: 600; color: var(--text-primary); }
.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 1rem;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}
.modal-close:hover { color: var(--text-primary); background: var(--bg-hover); }

.modal-body { padding: 20px 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 10px; justify-content: flex-end; }

/* =============================================
   FORM INPUTS
   ============================================= */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.83rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-input, .form-select, .form-textarea {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 9px 12px;
    font-size: 0.88rem;
    color: var(--text-primary);
    font-family: var(--font);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--input-focus);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-select option { background: var(--bg-elevated); }

/* Connection Test Banner */
.connection-test {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.84rem;
    margin-top: 12px;
}
.connection-test.success { background: rgba(16, 185, 129, 0.1); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.2); }
.connection-test.error { background: rgba(239, 68, 68, 0.08); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.2); }
.connection-test.testing { background: rgba(245, 158, 11, 0.08); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.2); }

/* =============================================
   TOAST NOTIFICATIONS
   ============================================= */
.toast-container {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 99999;          /* above every modal/overlay */
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    background: #1c1b19;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 12px;
    padding: 13px 18px;
    font-size: 0.86rem;
    font-weight: 500;
    color: #ececec;
    box-shadow: 0 16px 48px rgba(0,0,0,0.7), 0 0 0 1px rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 260px;
    max-width: 400px;
    pointer-events: auto;
    animation: slideUp 0.25s cubic-bezier(0.16,1,0.3,1);
}
.toast.success { border-color: rgba(16,185,129,0.35); }
.toast.error   { border-color: rgba(239,68,68,0.35);  }
.toast.info    { border-color: rgba(217,119,87,0.35); }

.toast.success i { color: #10b981; font-size: 1rem; }
.toast.error   i { color: #ef4444; font-size: 1rem; }
.toast.info    i { color: var(--accent); font-size: 1rem; }

/* =============================================
   AUTH PAGES
   ============================================= */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-base);
    padding: 24px;
}

.auth-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 36px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s ease;
}

.auth-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
    margin-bottom: 28px;
}
.auth-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}
.auth-logo-text { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.03em; color: var(--text-primary); }

.auth-title { font-size: 1.2rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; text-align: center; }
.auth-subtitle { font-size: 0.87rem; color: var(--text-secondary); margin-bottom: 28px; text-align: center; }

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text-muted);
    font-size: 0.8rem;
}
.auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-footer { text-align: center; margin-top: 24px; font-size: 0.85rem; color: var(--text-secondary); }
.auth-link { color: var(--accent); text-decoration: none; font-weight: 500; }
.auth-link:hover { text-decoration: underline; }

.auth-theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition);
    font-size: 0.95rem;
}
.auth-theme-toggle:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-subtle); }

/* =============================================
   CONNECTIONS GRID (Databases page)
   ============================================= */
.connections-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}
@media (max-width: 1200px) { .connections-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 860px)  { .connections-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 500px)  { .connections-grid { grid-template-columns: 1fr; } }

/* Provider selection grid (Add DB modal) */
.provider-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 4px;
}
@media (max-width: 480px) { .provider-grid { grid-template-columns: repeat(2, 1fr); } }

/* =============================================
   CHARTS / SAVED CHARTS PAGE
   ============================================= */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}
@media (max-width: 1100px) { .charts-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 800px)  { .charts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 500px)  { .charts-grid { grid-template-columns: 1fr; } }

.chart-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}
.chart-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }

.chart-card-preview {
    height: 180px;
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.chart-card-title-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 14px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
}
.cct-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.cct-text {
    font-size: 0.82rem; font-weight: 600; color: var(--text);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.chart-card-body { padding: 10px 16px; }
.chart-card-title {
    font-weight: 600; font-size: 0.9rem; color: var(--text);
    margin-bottom: 5px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.chart-card-meta { font-size: 0.78rem; color: var(--text-muted); }

.chart-card-actions {
    display: flex;
    gap: 6px;
    padding: 0 16px 14px;
}

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.74rem;
    font-weight: 500;
    background: var(--bg-overlay);
    color: var(--text-secondary);
}
.tag-accent { background: var(--accent-subtle); color: var(--accent); }

/* =============================================
   DASHBOARDS PAGE
   ============================================= */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
    padding: 20px;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
    body { overflow: auto; }

    .app-shell { position: relative; }

    .sidebar {
        position: fixed;
        left: 0; top: 0; bottom: 0;
        transform: translateX(-100%);
        z-index: 200;
        width: 280px !important;
        min-width: 280px !important;
    }
    .sidebar.sidebar-open { transform: translateX(0) !important; }
    .sidebar-closed { transform: translateX(-100%) !important; }
    .sidebar-toggle { display: none; }
    .sidebar-overlay { display: block; }
    .mobile-header { display: flex; }
    .main-content { height: 100dvh; }

    /* Home page */
    .home-page { padding: 24px 16px; justify-content: flex-start; padding-top: 32px; }
    .home-greeting { font-size: clamp(1.4rem, 6vw, 1.9rem); }
    .home-subtitle { font-size: 0.9rem; margin-bottom: 24px; }
    .suggestions-grid { grid-template-columns: 1fr 1fr; }
    .prompt-container { padding: 0; }

    /* Page containers */
    .page-container { padding: 20px 14px; }

    /* Page header — stack title above button */
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 20px;
    }
    .page-header > .btn,
    .page-header > a.btn { align-self: flex-start; }

    /* Auth */
    .auth-card { padding: 28px 20px; }

    /* Cards */
    .cards-grid { grid-template-columns: 1fr; }
    .charts-grid { grid-template-columns: 1fr; }

    /* Chat header — wrap db selector below title row */
    .chat-header { flex-wrap: wrap; padding: 10px 12px; gap: 8px; row-gap: 6px; }
    .chat-header-spacer { display: none; }
    .chat-title { flex: 1; min-width: 0; font-size: 0.88rem; }
    .chat-db-select { order: 10; flex: 1 1 100%; max-width: 100% !important; font-size: 0.82rem; }
    .chat-messages { padding: 16px 12px; gap: 16px; }
    .chat-input-bar { padding: 10px 12px; }
    .chat-input-box { padding: 8px 10px 8px 14px; }

    /* Schema page header */
    .schema-page-header { flex-direction: column; align-items: flex-start; gap: 14px; }
    .schema-header-identity { gap: 12px; }
    .schema-header-actions { width: 100%; flex-wrap: wrap; }
    .schema-db-avatar { width: 44px; height: 44px; font-size: 1.1rem; }
    .schema-title { font-size: 1.15rem; }
    .schema-stats-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .schema-toolbar { gap: 8px; }
    .schema-table-end .schema-type-summary { display: none; }

    /* Dashboard grid */
    .dash-grid { grid-template-columns: 1fr !important; }

    /* Modals — slide up from bottom on mobile */
    .modal-overlay { align-items: flex-end; padding: 0; }
    .modal {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-height: 92dvh;
    }

    /* Toast — full-width at bottom */
    .toast-container { right: 12px; left: 12px; bottom: 16px; }
    .toast { max-width: 100%; min-width: unset; }

    /* KPI card */
    .kpi-value { font-size: 2.5rem; }
    .kpi-card { padding: 20px; }

    /* Profile page */
    .profile-page { padding: 20px 14px; }
    .profile-hero { flex-direction: column; text-align: center; gap: 16px; }
    .profile-meta { justify-content: center; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr !important; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }

    .page-container { padding: 14px 12px; }

    .suggestions-grid { grid-template-columns: 1fr; }
    .prompt-actions { flex-wrap: wrap; }
    .prompt-btn-send { order: 3; }

    /* Chat */
    .chat-header { padding: 8px 10px; }
    .message { gap: 10px; }
    .message-avatar { width: 28px; height: 28px; font-size: 0.7rem; }
    .message-content { font-size: 0.88rem; }
    .followup-btn { font-size: 0.78rem; padding: 6px 10px; }

    /* Schema */
    .schema-stats-row { grid-template-columns: repeat(2, 1fr); }
    .schema-breadcrumb { font-size: 0.75rem; gap: 5px; }

    /* Auth card tighter */
    .auth-card { padding: 22px 16px; border-radius: var(--radius-lg); }

    /* Chart type switcher */
    .chart-type-btn { padding: 4px 9px; font-size: 0.74rem; }

    /* Data table horizontal scroll hint */
    .data-table-wrapper { -webkit-overflow-scrolling: touch; }
    .data-table td, .data-table th { padding: 7px 10px; font-size: 0.78rem; }

    /* Modal body padding */
    .modal-body { padding: 16px; }
    .modal-header { padding: 16px 16px 12px; }
    .modal-footer { padding: 12px 16px; }
}

/* =============================================
   UTILITY CLASSES
   ============================================= */
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.84rem; }
.text-xs { font-size: 0.75rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* Spin animation */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { animation: spin 0.8s linear infinite; }

/* =============================================
   SCHEMA DRAWER
   ============================================= */
.schema-drawer {
    position: fixed;
    top: 62px; right: 0; bottom: 0;
    width: 300px;
    background: var(--bg-surface);
    border-left: 1px solid var(--border);
    box-shadow: -6px 0 32px rgba(0,0,0,.12);
    z-index: 500;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
}
.schema-drawer.open { transform: translateX(0); }

.schema-drawer-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px 13px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elevated);
    flex-shrink: 0;
}
.schema-drawer-title { font-size: 0.9rem; font-weight: 600; color: var(--text); display:flex; align-items:center; }

.schema-drawer-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 10px 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}
.schema-drawer-body::-webkit-scrollbar { width: 3px; }
.schema-drawer-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.schema-table-block {
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-surface);
    border: 1px solid var(--border);
}

.schema-table-name {
    display: flex; align-items: center; gap: 8px;
    padding: 9px 12px;
    background: var(--bg-elevated);
    font-size: 0.8rem; font-weight: 600;
    color: var(--text);
    user-select: none;
    cursor: pointer;
    transition: background .12s;
}
.schema-table-name:hover { background: var(--bg-overlay); }

.schema-col-count {
    font-size: 0.67rem; font-weight: 500;
    color: var(--accent);
    background: var(--accent-subtle);
    padding: 1px 8px;
    border-radius: 20px;
    flex-shrink: 0;
}

.schema-cols {
    border-top: 1px solid var(--border);
}
.schema-col-row {
    display: flex; align-items: center; gap: 0;
    padding: 0;
    font-size: 0.75rem;
    border-bottom: 1px solid var(--border);
}
.schema-col-row:last-child { border-bottom: none; }
.schema-col-row:hover .schema-col-name { color: var(--accent); }

.schema-col-name {
    color: var(--text-secondary);
    font-weight: 500;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding: 6px 12px 6px 28px;
    transition: color .1s;
}
.schema-col-type {
    color: var(--text-muted);
    font-size: 0.63rem;
    font-family: 'SF Mono', monospace;
    padding: 6px 12px 6px 4px;
    flex-shrink: 0;
    text-transform: lowercase;
}
.transition-fast { transition: all .15s ease; }

/* =============================================
   THEME TRANSITION
   ============================================= */
*, *::before, *::after {
    transition-property: background-color, border-color, color;
    transition-duration: 200ms;
    transition-timing-function: ease;
}
/* Exclude elements that shouldn't transition colors */
canvas, img, video { transition: none !important; }