:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1b23;
    --bg-tertiary: #252630;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --border: #2e2f3a;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --user-msg: #1e293b;
    --bot-msg: #1a1b23;
}

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

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

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

.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 16px;
}

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

.sidebar-header h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
}

.sidebar-header .status {
    font-size: 11px;
    color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    padding: 2px 8px;
    border-radius: 10px;
}

.new-chat-btn {
    width: 100%;
    padding: 10px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 12px;
    transition: background 0.2s;
}

.new-chat-btn:hover { background: var(--accent-hover); }

.session-list { flex: 1; overflow-y: auto; }

.session-item {
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: background 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-item:hover, .session-item.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-nav {
    border-top: 1px solid var(--border);
    padding-top: 12px;
}

.sidebar-nav a {
    display: block;
    padding: 8px 10px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    transition: background 0.15s;
}

.sidebar-nav a:hover { background: var(--bg-tertiary); color: var(--text-primary); }

/* Main chat area */
.main-content { flex: 1; display: flex; flex-direction: column; }

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 16px 20px;
    border-radius: 12px;
    line-height: 1.6;
    font-size: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message.user {
    background: var(--user-msg);
    border: 1px solid var(--border);
}

.message.assistant {
    background: var(--bot-msg);
}

.message .role-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.message.assistant .role-label { color: var(--accent); }

.message .thinking {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.thinking .spinner {
    width: 14px;
    height: 14px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Input area */
.chat-input-area {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.chat-input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
}

.chat-input:focus { border-color: var(--accent); }

.send-btn {
    padding: 12px 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background 0.2s;
}

.send-btn:hover { background: var(--accent-hover); }
.send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Dashboard */
.dashboard {
    padding: 32px;
    overflow-y: auto;
    flex: 1;
}

.dashboard h2 {
    font-size: 24px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.stat-card .label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card.danger .value { color: var(--danger); }
.stat-card.warning .value { color: var(--warning); }
.stat-card.success .value { color: var(--success); }

.disc-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

.disc-table th, .disc-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.disc-table th {
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.badge.high { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.badge.medium { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.badge.low { background: rgba(34, 197, 94, 0.15); color: var(--success); }

/* Login */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.login-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    width: 380px;
    text-align: center;
}

.login-box h1 { font-size: 22px; margin-bottom: 8px; color: var(--accent); }
.login-box p { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; }

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

.google-login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 20px;
    background: #fff;
    color: #3c4043;
    border: 1px solid #dadce0;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s;
}

.google-login-btn:hover {
    background: #f7f8f8;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* Sidebar user info */
.sidebar-user {
    border-top: 1px solid var(--border);
    padding-top: 12px;
    margin-top: 8px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 4px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.user-avatar-placeholder {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.user-details {
    flex: 1;
    min-width: 0;
}

.user-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 11px;
    color: var(--text-secondary);
}

.logout-btn {
    display: block;
    width: 100%;
    margin-top: 8px;
    padding: 6px 10px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-family: inherit;
    transition: background 0.15s, color 0.15s;
}

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