/* ═══════════════════════════════════════════════════════════════════════
   NEXON — Enterprise AI Business Assistant
   Design System v4.0 — Light Theme
   ═══════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── Design Tokens ────────────────────────────────────────────────── */
:root {
    /* Backgrounds */
    --bg-primary:   #F8FAFC;
    --bg-secondary: #FFFFFF;
    --bg-tertiary:  #F1F5F9;
    --bg-card:      #FFFFFF;
    --bg-sidebar:   #FFFFFF;

    /* Accent — defaults Blue, overridden by JS color picker */
    --accent:          #2563EB;
    --accent-light:    #3B82F6;
    --accent-glow:     rgba(37, 99, 235, 0.15);
    --accent-gradient: linear-gradient(135deg, #2563EB, #1D4ED8);
    --accent-soft:     rgba(37, 99, 235, 0.06);
    --bg-hover:        rgba(37, 99, 235, 0.05);
    --bg-active:       rgba(37, 99, 235, 0.09);
    --border-accent:   rgba(37, 99, 235, 0.25);

    /* Text */
    --text-primary:   #0F172A;
    --text-secondary: #475569;
    --text-muted:     #94A3B8;
    --text-accent:    var(--accent);

    /* Semantic */
    --success: #059669;
    --warning: #D97706;
    --error:   #DC2626;
    --info:    #0284C7;

    /* Borders */
    --border:       #E2E8F0;
    --border-light: #F1F5F9;

    /* Radii */
    --radius:    12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15,23,42,.07), 0 1px 2px rgba(15,23,42,.04);
    --shadow-md: 0 4px 16px rgba(15,23,42,.09), 0 2px 6px rgba(15,23,42,.04);
    --shadow-lg: 0 10px 40px rgba(15,23,42,.13), 0 4px 12px rgba(15,23,42,.06);
    --shadow-glow: 0 0 0 3px var(--accent-glow);

    --sidebar-width: 280px;
    --header-height: 58px;
    --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ─── Sidebar ───────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition);
    z-index: 100;
}

.sidebar-header {
    padding: 16px 14px 14px;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand {
    display: flex; align-items: center; gap: 10px; margin-bottom: 12px;
}

.sidebar-brand .logo {
    width: 36px; height: 36px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; color: #fff; flex-shrink: 0;
    box-shadow: 0 2px 10px var(--accent-glow);
}

.sidebar-brand h1 {
    font-size: 18px; font-weight: 800; letter-spacing: -0.5px;
    color: var(--text-primary); line-height: 1.1;
}

.sidebar-brand span {
    font-size: 9.5px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 1.4px; font-weight: 600;
}

/* ─── Color Selector ─────────────────────────────────────────────────── */
.color-selector {
    display: flex; align-items: center; gap: 7px;
    margin-bottom: 12px; padding: 8px 10px;
    background: var(--bg-tertiary); border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.color-selector-label {
    font-size: 9.5px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 1.2px; font-weight: 700;
    margin-right: 2px; flex-shrink: 0;
}

.color-swatch {
    width: 18px; height: 18px; border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer; transition: all var(--transition);
    position: relative; flex-shrink: 0;
    outline: none;
}
.color-swatch:hover { transform: scale(1.2); }
.color-swatch.active {
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px currentColor;
}
.color-swatch.blue   { background: #2563EB; color: #2563EB; }
.color-swatch.yellow { background: #D97706; color: #D97706; }
.color-swatch.green  { background: #059669; color: #059669; }
.color-swatch.purple { background: #7C3AED; color: #7C3AED; }
.color-swatch.rose   { background: #E11D48; color: #E11D48; }

.btn-new-chat {
    width: 100%; padding: 9px 14px;
    background: var(--accent-gradient);
    border: none; border-radius: var(--radius-sm);
    color: #fff; font-size: 13px; font-weight: 600; font-family: inherit;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 7px;
    transition: all var(--transition);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-new-chat:hover { transform: translateY(-1px); box-shadow: 0 5px 16px var(--accent-glow); }

/* ─── Chat List ──────────────────────────────────────────────────────── */
.chat-list { flex: 1; overflow-y: auto; padding: 6px 8px; }
.chat-list::-webkit-scrollbar { width: 3px; }
.chat-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.chat-list-section-label {
    font-size: 10px; font-weight: 700; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 1px;
    padding: 8px 6px 4px;
}

.chat-item {
    padding: 9px 10px; border-radius: var(--radius-sm);
    cursor: pointer; transition: all var(--transition);
    margin-bottom: 2px; display: flex; align-items: center;
    gap: 8px; position: relative;
}
.chat-item:hover { background: var(--bg-hover); }
.chat-item.active {
    background: var(--bg-active);
    border-left: 2px solid var(--accent);
    padding-left: 8px;
}
.chat-item .chat-icon { font-size: 14px; flex-shrink: 0; opacity: 0.5; }
.chat-item.active .chat-icon { opacity: 1; }
.chat-item .chat-info { flex: 1; min-width: 0; }
.chat-item .chat-title {
    font-size: 13px; font-weight: 500; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chat-item .chat-date { font-size: 10px; color: var(--text-muted); margin-top: 1px; }
.chat-item .btn-delete {
    opacity: 0; background: none; border: none;
    color: var(--text-muted); cursor: pointer;
    font-size: 12px; padding: 3px 5px; border-radius: 4px;
    transition: all var(--transition);
}
.chat-item:hover .btn-delete { opacity: 1; }
.chat-item .btn-delete:hover { color: var(--error); background: rgba(220,38,38,.08); }

/* ─── Sidebar Footer ─────────────────────────────────────────────────── */
.sidebar-footer {
    padding: 10px 12px; border-top: 1px solid var(--border);
    display: flex; gap: 6px;
}
.sidebar-footer button, .sidebar-footer a {
    flex: 1; padding: 7px 6px; background: var(--bg-tertiary);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text-secondary); font-size: 11px; cursor: pointer; font-family: inherit;
    transition: all var(--transition); text-align: center; text-decoration: none;
    display: inline-flex; align-items: center; justify-content: center; gap: 4px;
}
.sidebar-footer button:hover, .sidebar-footer a:hover {
    background: var(--bg-hover); color: var(--accent);
    border-color: var(--border-accent);
}

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

/* ─── Chat Header ────────────────────────────────────────────────────── */
.chat-header {
    height: var(--header-height); padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary); flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}
.chat-header-left { display: flex; align-items: center; gap: 12px; }

.btn-sidebar-toggle {
    display: none; background: none; border: none;
    color: var(--text-secondary); font-size: 18px; cursor: pointer;
    padding: 6px; border-radius: var(--radius-sm); transition: all var(--transition);
}
.btn-sidebar-toggle:hover { background: var(--bg-tertiary); }

.model-badge {
    display: flex; align-items: center; gap: 6px;
    padding: 4px 12px; background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 20px; font-size: 12px; color: var(--text-secondary);
}

.status-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--success); animation: pulse 2.5s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(5,150,105,.5); }
    60% { box-shadow: 0 0 0 5px rgba(5,150,105,0); }
}

.chat-header-right { display: flex; align-items: center; gap: 8px; }
.header-btn {
    background: none; border: 1px solid var(--border);
    color: var(--text-secondary); padding: 5px 12px;
    border-radius: var(--radius-sm); font-size: 12px; font-family: inherit;
    cursor: pointer; transition: all var(--transition);
}
.header-btn:hover {
    background: rgba(220,38,38,.06); color: var(--error);
    border-color: rgba(220,38,38,.3);
}

/* ─── Messages Container ─────────────────────────────────────────────── */
.messages-container {
    flex: 1; overflow-y: auto; padding: 24px 22px; scroll-behavior: smooth;
}
.messages-container::-webkit-scrollbar { width: 5px; }
.messages-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; }
.messages-container::-webkit-scrollbar-track { background: transparent; }

/* ─── Message Bubble ─────────────────────────────────────────────────── */
.message {
    display: flex; gap: 12px; margin-bottom: 22px;
    max-width: 88%; animation: msgIn 0.25s ease;
}
@keyframes msgIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}
.message.user { margin-left: auto; flex-direction: row-reverse; max-width: 72%; }

.message-avatar {
    width: 32px; height: 32px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 15px; flex-shrink: 0;
    background: var(--bg-tertiary); border: 1px solid var(--border);
    color: var(--text-secondary);
}
.message.bot .message-avatar {
    background: var(--accent-gradient); border: none; color: #fff;
    box-shadow: 0 2px 10px var(--accent-glow);
}

.message-content {
    padding: 14px 18px; border-radius: var(--radius-lg);
    font-size: 14.5px; line-height: 1.72; word-wrap: break-word;
}
.message.bot .message-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    border-top-left-radius: 4px;
}
.message.user .message-content {
    background: var(--accent-gradient); color: #fff; border: none;
    box-shadow: 0 3px 14px var(--accent-glow);
    border-top-right-radius: 4px;
    font-size: 14px; font-weight: 500;
}

/* ─── Bot Content Typography ─────────────────────────────────────────── */
.message.bot .message-content h1 {
    font-size: 16px; font-weight: 800; color: var(--text-primary);
    margin: 14px 0 8px; letter-spacing: -0.3px;
}
.message.bot .message-content h2 {
    font-size: 12.5px; font-weight: 700; color: var(--accent);
    margin: 16px 0 10px;
    padding: 6px 10px 6px 12px;
    border-left: 3px solid var(--accent);
    background: var(--accent-soft);
    border-radius: 0 6px 6px 0;
    letter-spacing: 0.2px; display: block;
}
.message.bot .message-content h2:first-child { margin-top: 0; }
.message.bot .message-content h3 {
    font-size: 13px; font-weight: 600; color: var(--text-primary);
    margin: 10px 0 6px;
}
.message.bot .message-content strong {
    color: var(--text-primary); font-weight: 700;
}
.message.bot .message-content em {
    color: var(--text-secondary); font-style: italic;
}
.message.bot .message-content ul,
.message.bot .message-content ol { padding-left: 20px; margin: 7px 0; }
.message.bot .message-content li {
    margin: 5px 0; color: var(--text-secondary); font-size: 14px;
}
.message.bot .message-content p { margin: 6px 0; color: var(--text-primary); }

.message.bot .message-content pre {
    background: var(--bg-tertiary); padding: 12px; border-radius: var(--radius-sm);
    overflow-x: auto; margin: 8px 0; font-size: 12px;
    border: 1px solid var(--border);
}
.message.bot .message-content code {
    background: var(--accent-soft); padding: 2px 6px;
    border-radius: 4px; font-size: 12px; color: var(--accent); font-weight: 600;
}

/* ─── Tables ─────────────────────────────────────────────────────────── */
.table-responsive {
    width: 100%; overflow-x: auto; margin: 14px 0;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.message-content table {
    width: 100%; border-collapse: collapse; margin: 0; font-size: 13px;
}
.message-content th {
    background: var(--bg-tertiary);
    color: var(--accent);
    font-weight: 700; font-size: 11px; text-transform: uppercase;
    letter-spacing: 0.7px; white-space: nowrap;
    padding: 10px 14px;
    border-bottom: 2px solid var(--border);
    border-right: 1px solid var(--border);
    text-align: left;
}
.message-content th:last-child { border-right: none; }
.message-content td {
    padding: 9px 14px;
    border-bottom: 1px solid var(--border-light);
    border-right: 1px solid var(--border-light);
    color: var(--text-secondary); font-size: 13px;
}
.message-content td:last-child { border-right: none; }
.message-content tr:last-child td { border-bottom: none; }
.message-content tr:hover td { background: var(--bg-hover); color: var(--text-primary); }
.message-content tbody tr:nth-child(even) td { background: var(--bg-tertiary); }
.message-content tbody tr:nth-child(even):hover td { background: var(--bg-hover); }

.message-time {
    font-size: 10px; color: var(--text-muted); margin-top: 4px; padding: 0 2px;
}

/* ─── Chart Container ────────────────────────────────────────────────── */
.chart-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius); padding: 16px; margin: 14px 0;
    max-width: 520px;
    box-shadow: var(--shadow-sm);
}
.chart-container canvas { max-height: 260px; }
.chart-title {
    font-size: 11.5px; font-weight: 700; color: var(--text-secondary);
    margin-bottom: 14px; text-transform: uppercase; letter-spacing: 0.7px;
    display: flex; align-items: center; gap: 8px;
}
.chart-title::before {
    content: ''; display: block;
    width: 3px; height: 14px;
    background: var(--accent); border-radius: 2px; flex-shrink: 0;
}

/* ─── Welcome Screen ─────────────────────────────────────────────────── */
.welcome-screen {
    display: flex; flex-direction: column; align-items: center;
    justify-content: center; height: 100%; text-align: center;
    padding: 40px 20px;
}
.welcome-logo {
    width: 76px; height: 76px; background: var(--accent-gradient);
    border-radius: 22px; display: flex; align-items: center;
    justify-content: center; font-size: 34px; margin-bottom: 22px;
    box-shadow: var(--shadow-md), 0 0 40px var(--accent-glow);
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(-1deg); }
    50%       { transform: translateY(-8px) rotate(1deg); }
}
.welcome-screen h2 {
    font-size: 24px; font-weight: 800; margin-bottom: 8px;
    color: var(--text-primary); letter-spacing: -0.5px;
}
.welcome-screen p {
    color: var(--text-secondary); font-size: 14px;
    margin-bottom: 30px; max-width: 400px; line-height: 1.65;
}

.quick-actions {
    display: flex; flex-wrap: wrap; gap: 8px;
    justify-content: center; max-width: 620px;
}
.quick-btn {
    padding: 9px 16px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: 24px;
    color: var(--text-secondary); font-size: 12.5px; font-weight: 500; font-family: inherit;
    cursor: pointer; transition: all var(--transition); white-space: nowrap;
    box-shadow: var(--shadow-sm);
}
.quick-btn:hover {
    background: var(--bg-active); color: var(--accent);
    border-color: var(--border-accent); transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ─── Typing Indicator ───────────────────────────────────────────────── */
.typing-indicator {
    display: none; gap: 12px; margin-bottom: 20px;
    align-items: flex-start; padding: 0 22px;
}
.typing-indicator.active { display: flex; }
.typing-dots {
    padding: 12px 18px; background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius);
    display: flex; gap: 5px; align-items: center;
    box-shadow: var(--shadow-sm);
}
.typing-dots span {
    width: 5px; height: 5px; border-radius: 50%;
    background: var(--accent); animation: typingDot 1.2s infinite;
}
.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingDot {
    0%, 100% { opacity: 0.25; transform: scale(0.75); }
    50%       { opacity: 1;    transform: scale(1.15); }
}

/* ─── Input Area ─────────────────────────────────────────────────────── */
.input-area {
    padding: 14px 20px 16px; border-top: 1px solid var(--border);
    background: var(--bg-secondary); flex-shrink: 0;
}
.input-wrapper {
    display: flex; align-items: center; gap: 8px;
    background: var(--bg-primary); border: 1.5px solid var(--border);
    border-radius: var(--radius); padding: 6px 10px;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.input-wrapper textarea {
    flex: 1; background: transparent; border: none;
    color: var(--text-primary); font-size: 14.5px; font-family: inherit;
    resize: none; max-height: 120px; outline: none; line-height: 1.5;
    padding: 0; margin: 0; align-self: center;
}
.input-wrapper textarea::placeholder { color: var(--text-muted); }

.input-btn {
    background: none; border: none; color: var(--text-muted);
    font-size: 17px; cursor: pointer; padding: 4px 6px;
    border-radius: 6px; transition: all var(--transition); flex-shrink: 0;
}
.input-btn:hover:not(:disabled) { color: var(--accent); background: var(--bg-hover); }
.input-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.input-btn.send-btn {
    background: var(--accent-gradient); color: #fff;
    border-radius: 8px; padding: 7px 11px;
    box-shadow: 0 2px 8px var(--accent-glow);
}
.input-btn.send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 14px var(--accent-glow);
}
.input-btn.recording { color: var(--error); animation: recPulse 1s infinite; }
@keyframes recPulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.2); } }

/* ─── Recording Overlay ─────────────────────────────────────────────── */
.recording-overlay {
    position: fixed;
    bottom: 90px; left: 50%; transform: translateX(-50%);
    z-index: 9999;
    pointer-events: auto;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.recording-overlay.active { opacity: 1; }

.rec-badge {
    display: flex; align-items: center; gap: 10px;
    background: #0F172A;
    color: #fff;
    border-radius: 999px;
    padding: 10px 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.35);
    cursor: pointer;
    user-select: none;
    animation: recBadgePop 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes recBadgePop {
    from { transform: scale(0.7); opacity: 0; }
    to   { transform: scale(1);   opacity: 1; }
}

/* Pulsing red dot */
.rec-dot {
    width: 12px; height: 12px;
    background: #EF4444;
    border-radius: 50%;
    flex-shrink: 0;
    animation: recDotPulse 1s ease-in-out infinite;
    box-shadow: 0 0 0 0 rgba(239,68,68,0.6);
}
@keyframes recDotPulse {
    0%   { box-shadow: 0 0 0 0    rgba(239,68,68,0.6); }
    70%  { box-shadow: 0 0 0 10px rgba(239,68,68,0);   }
    100% { box-shadow: 0 0 0 0    rgba(239,68,68,0);   }
}

/* Animated waveform bars */
.rec-waves {
    display: flex; align-items: center; gap: 3px; height: 20px;
}
.rec-waves span {
    width: 3px; background: #34D399; border-radius: 99px;
    animation: recWave 0.8s ease-in-out infinite;
}
.rec-waves span:nth-child(1) { height: 8px;  animation-delay: 0s;    }
.rec-waves span:nth-child(2) { height: 16px; animation-delay: 0.15s; }
.rec-waves span:nth-child(3) { height: 12px; animation-delay: 0.3s;  }
.rec-waves span:nth-child(4) { height: 20px; animation-delay: 0.45s; }
@keyframes recWave {
    0%, 100% { transform: scaleY(0.4); }
    50%       { transform: scaleY(1);   }
}

.rec-label {
    font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
    color: #F1F5F9;
}

.input-hint {
    text-align: center; font-size: 10px;
    color: var(--text-muted); margin-top: 7px;
}

/* ─── Login Screen ───────────────────────────────────────────────────── */
.login-screen {
    display: flex; align-items: center; justify-content: center;
    height: 100vh; background: var(--bg-primary);
}
.login-card {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-xl); padding: 44px;
    width: 100%; max-width: 380px; text-align: center;
    box-shadow: var(--shadow-lg);
}
.login-card .logo {
    width: 64px; height: 64px; background: var(--accent-gradient);
    border-radius: 18px; display: flex; align-items: center;
    justify-content: center; font-size: 28px;
    margin: 0 auto 16px; box-shadow: 0 4px 20px var(--accent-glow);
}
.login-card h2 {
    font-size: 22px; font-weight: 800; margin-bottom: 4px;
    color: var(--text-primary); letter-spacing: -0.5px;
}
.login-card p { color: var(--text-secondary); font-size: 13px; margin-bottom: 24px; }
.login-card input {
    width: 100%; padding: 11px 14px; background: var(--bg-tertiary);
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: 14px; font-family: inherit;
    outline: none; margin-bottom: 12px; transition: border-color var(--transition);
}
.login-card input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.login-card .btn-login {
    width: 100%; padding: 12px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-sm); color: #fff;
    font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit;
    transition: all var(--transition);
    box-shadow: 0 2px 10px var(--accent-glow);
}
.login-card .btn-login:hover { transform: translateY(-1px); box-shadow: 0 5px 18px var(--accent-glow); }

/* ─── Admin Page ─────────────────────────────────────────────────────── */
body.admin-page { overflow-y: auto; background: var(--bg-primary); }
.admin-container { max-width: 800px; margin: 0 auto; padding: 30px 20px; }
.admin-header { text-align: center; margin-bottom: 30px; }
.admin-header h1 { font-size: 24px; color: var(--text-primary); font-weight: 800; }

.settings-section {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}
.settings-section h2 {
    font-size: 15px; font-weight: 700; color: var(--text-primary);
    margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
    padding-bottom: 12px; border-bottom: 1px solid var(--border);
    background: none; border-left: none;
}

.form-group { margin-bottom: 14px; }
.form-group label {
    display: block; font-size: 11.5px; font-weight: 600;
    color: var(--text-secondary); margin-bottom: 6px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.form-group input, .form-group select {
    width: 100%; padding: 10px 14px; background: var(--bg-tertiary);
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text-primary); font-size: 13px; font-family: inherit;
    outline: none; transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-primary {
    padding: 10px 20px; background: var(--accent-gradient);
    border: none; border-radius: var(--radius-sm); color: #fff;
    font-size: 13px; font-weight: 600; cursor: pointer; font-family: inherit;
    transition: all var(--transition); width: 100%;
}
.btn-primary:hover { box-shadow: 0 4px 16px var(--accent-glow); transform: translateY(-1px); }

.status-badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 10px; border-radius: 12px; font-size: 11px; font-weight: 500;
}
.status-badge.connected {
    background: rgba(5,150,105,.08); color: var(--success);
    border: 1px solid rgba(5,150,105,.25);
}
.status-badge.disconnected {
    background: rgba(220,38,38,.08); color: var(--error);
    border: 1px solid rgba(220,38,38,.25);
}
.help-text { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ─── Sidebar Overlay (mobile) ───────────────────────────────────────── */
.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(15,23,42,.25); z-index: 99;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

/* ─── Toasts ─────────────────────────────────────────────────────────── */
.toast-container {
    position: fixed; top: 16px; right: 16px; z-index: 9999;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    padding: 10px 16px; border-radius: var(--radius-sm);
    font-size: 13px; animation: toastIn 0.25s ease;
    box-shadow: var(--shadow-md); max-width: 300px;
    display: flex; align-items: center; gap: 8px;
}
.toast.success {
    background: #ECFDF5; color: var(--success);
    border: 1px solid rgba(5,150,105,.25);
}
.toast.error {
    background: #FEF2F2; color: var(--error);
    border: 1px solid rgba(220,38,38,.25);
}
.toast.info {
    background: #EFF6FF; color: var(--info);
    border: 1px solid rgba(2,132,199,.25);
}
@keyframes toastIn  { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { to   { opacity: 0; transform: translateX(40px); } }

/* ─── Download Buttons ───────────────────────────────────────────────── */
.btn-download {
    background: none; border: 1px solid var(--border);
    color: var(--text-secondary); padding: 5px 11px;
    border-radius: var(--radius-sm); font-size: 12px; font-family: inherit;
    cursor: pointer; transition: all var(--transition);
    display: inline-flex; align-items: center; gap: 5px;
}
.btn-download:hover {
    background: var(--accent-soft); color: var(--accent);
    border-color: var(--border-accent);
}
.btn-download:disabled { opacity: 0.4; cursor: not-allowed; }

/* ─── Edit Quick Links Button ────────────────────────────────────────── */
.btn-edit-links {
    margin-top: 14px;
    padding: 6px 16px;
    background: transparent;
    border: 1px dashed var(--border-accent);
    color: var(--accent);
    border-radius: 20px;
    font-size: 12px; font-family: inherit;
    cursor: pointer; transition: all var(--transition);
    opacity: 0.7;
}
.btn-edit-links:hover { opacity: 1; background: var(--accent-soft); }

/* ─── Modal Overlay ──────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(15,23,42,0.45);
    display: flex; align-items: center; justify-content: center;
    z-index: 2000; backdrop-filter: blur(4px);
}
.modal-card {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: min(640px, 94vw); max-height: 82vh;
    display: flex; flex-direction: column; overflow: hidden;
    animation: modalIn 0.22s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(-12px) scale(0.97); }
    to   { opacity: 1; transform: none; }
}
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 22px 14px; border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}
.modal-header h3 { font-size: 15px; font-weight: 700; color: var(--text-primary); margin: 0; }
.btn-modal-close {
    background: none; border: none; cursor: pointer;
    font-size: 18px; color: var(--text-muted); padding: 4px 8px;
    border-radius: var(--radius-sm); line-height: 1;
    transition: all var(--transition);
}
.btn-modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }
.modal-body {
    padding: 16px 22px; overflow-y: auto; flex: 1;
    display: flex; flex-direction: column; gap: 9px;
}
.modal-body::-webkit-scrollbar { width: 4px; }
.modal-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.modal-footer {
    padding: 14px 22px; border-top: 1px solid var(--border);
    display: flex; gap: 8px; align-items: center; flex-shrink: 0;
}

/* ─── Quick Links Editor Row ─────────────────────────────────────────── */
.qle-row {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 8px; border-radius: var(--radius-sm);
    background: var(--bg-primary); border: 1px solid var(--border);
    transition: border-color var(--transition);
}
.qle-row:focus-within { border-color: var(--border-accent); }
.qle-drag {
    color: var(--text-muted); font-size: 14px; flex-shrink: 0;
    cursor: grab; line-height: 1; user-select: none; padding: 0 2px;
}
.qle-emoji {
    width: 46px; padding: 6px 4px; text-align: center;
    font-size: 15px; border: 1px solid var(--border);
    border-radius: var(--radius-sm); background: var(--bg-secondary);
    color: var(--text-primary); font-family: inherit;
}
.qle-label {
    width: 140px; padding: 7px 10px; font-size: 13px;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--bg-secondary); color: var(--text-primary);
    font-family: inherit; flex-shrink: 0;
}
.qle-query {
    flex: 1; padding: 7px 10px; font-size: 13px;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--bg-secondary); color: var(--text-primary);
    font-family: inherit; min-width: 0;
}
.qle-emoji:focus, .qle-label:focus, .qle-query:focus {
    outline: none; border-color: var(--accent);
}
.qle-delete {
    padding: 6px 9px; background: none;
    border: 1px solid rgba(220,38,38,0.25); color: var(--error);
    border-radius: var(--radius-sm); cursor: pointer;
    font-size: 12px; flex-shrink: 0; transition: all var(--transition);
}
.qle-delete:hover { background: rgba(220,38,38,0.07); }

/* Modal footer buttons */
.btn-add-link {
    padding: 8px 15px; background: var(--accent-soft);
    color: var(--accent); border: 1px solid var(--border-accent);
    border-radius: var(--radius-sm); font-size: 12.5px;
    cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.btn-add-link:hover { background: var(--accent-glow); }
.btn-reset-links {
    padding: 8px 14px; background: none;
    color: var(--text-muted); border: 1px solid var(--border);
    border-radius: var(--radius-sm); font-size: 12.5px;
    cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.btn-reset-links:hover { background: var(--bg-hover); color: var(--text-secondary); }
.btn-save-links {
    margin-left: auto; padding: 8px 20px;
    background: var(--accent-gradient); color: #fff;
    border: none; border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 600; cursor: pointer;
    font-family: inherit; transition: all var(--transition);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.btn-save-links:hover { transform: translateY(-1px); box-shadow: 0 4px 14px var(--accent-glow); }

/* ─── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        position: fixed; left: 0; top: 0; height: 100%;
        transform: translateX(-100%); box-shadow: var(--shadow-lg);
    }
    .sidebar.open { transform: translateX(0); }
    .btn-sidebar-toggle { display: block; }
    .message { max-width: 96%; }
    .message.user { max-width: 88%; }
    .quick-btn { font-size: 12px; padding: 8px 13px; }
    .messages-container { padding: 16px 12px; }
    .input-area { padding: 10px 12px 14px; }
    .qle-label { width: 100px; }
    .qle-row { flex-wrap: wrap; }
    .qle-query { width: 100%; }
}