/* ================================================================
   ClawdBot — Jazz Noir Chat Interface
   Design tokens inherited from Blue Note Logic design system
   ================================================================ */

:root {
    /* Jazz Noir palette */
    --cb-bg: #0a0f1c;
    --cb-bg-elevated: #111827;
    --cb-bg-surface: #1a2235;
    --cb-bg-hover: #1f2b42;
    --cb-text: #e8e4dc;
    --cb-text-muted: #8a8578;
    --cb-text-dim: #5a574f;
    --cb-accent: #C9A961;
    --cb-accent-dim: rgba(201, 169, 97, 0.15);
    --cb-blue: #4A6FA5;
    --cb-blue-dim: rgba(74, 111, 165, 0.15);
    --cb-brand: #2A3B5C;
    --cb-border: rgba(201, 169, 97, 0.12);
    --cb-border-strong: rgba(201, 169, 97, 0.25);
    --cb-error: #e74c3c;
    --cb-success: #27ae60;
    --cb-red: #e74c3c;
    --cb-green: #27ae60;

    /* Typography */
    --cb-font-display: 'Spectral', Georgia, serif;
    --cb-font-body: 'Manrope', -apple-system, sans-serif;
    --cb-font-mono: 'JetBrains Mono', monospace;

    /* Layout */
    --cb-sidebar-width: 260px;
    --cb-topbar-height: 52px;
    --cb-radius: 8px;
    --cb-radius-lg: 12px;
}

/* Light theme overrides */
[data-theme="light"] {
    --cb-bg: #FAF8F3;
    --cb-bg-elevated: #ffffff;
    --cb-bg-surface: #f0ede6;
    --cb-bg-hover: #e8e4dc;
    --cb-text: #1a1a1a;
    --cb-text-muted: #666;
    --cb-text-dim: #999;
    --cb-border: rgba(42, 59, 92, 0.12);
    --cb-border-strong: rgba(42, 59, 92, 0.25);
}

/* ================================================================
   Reset & Base
   ================================================================ */

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

html, body {
    height: 100%;
    font-family: var(--cb-font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--cb-text);
    background: var(--cb-bg);
    -webkit-font-smoothing: antialiased;
}

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

/* ================================================================
   Top Bar
   ================================================================ */

.cb-topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--cb-topbar-height);
    background: var(--cb-bg-elevated);
    border-bottom: 1px solid var(--cb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    z-index: 100;
}

.cb-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--cb-text);
    font-family: var(--cb-font-display);
    font-size: 1.2rem;
    font-weight: 600;
}
.cb-logo:hover { text-decoration: none; color: var(--cb-accent); }
.cb-logo-icon { color: var(--cb-accent); font-size: 1.4rem; }

.cb-nav-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cb-user {
    font-size: 0.85rem;
    color: var(--cb-text-muted);
}

.cb-theme-toggle {
    background: none;
    border: 1px solid var(--cb-border);
    color: var(--cb-text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: border-color 0.2s, color 0.2s;
}
.cb-theme-toggle:hover {
    border-color: var(--cb-accent);
    color: var(--cb-accent);
}

/* ================================================================
   Buttons
   ================================================================ */

.cb-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1.25rem;
    border-radius: var(--cb-radius);
    font-family: var(--cb-font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--cb-border);
    background: var(--cb-bg-surface);
    color: var(--cb-text);
    cursor: pointer;
    transition: all 0.2s;
}
.cb-btn:hover { border-color: var(--cb-accent); color: var(--cb-accent); text-decoration: none; }

.cb-btn-primary {
    background: var(--cb-accent);
    color: #0a0f1c;
    border-color: var(--cb-accent);
}
.cb-btn-primary:hover {
    background: #d4b46e;
    color: #0a0f1c;
}

.cb-btn-small {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--cb-border);
    border-radius: 4px;
    color: var(--cb-text-muted);
}
.cb-btn-small:hover { color: var(--cb-accent); border-color: var(--cb-accent); text-decoration: none; }

/* ================================================================
   Home Page — Persona Grid
   ================================================================ */

.cb-home {
    margin-top: var(--cb-topbar-height);
    padding: 3rem 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.cb-home-hero {
    text-align: center;
    margin-bottom: 3rem;
}
.cb-home-hero h1 {
    font-family: var(--cb-font-display);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.cb-home-hero p {
    color: var(--cb-text-muted);
    font-size: 1.05rem;
}

.cb-persona-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.cb-persona-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    background: var(--cb-bg-elevated);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-lg);
    text-align: center;
    transition: border-color 0.2s, transform 0.15s;
    color: var(--cb-text);
}
.cb-persona-card:hover {
    border-color: var(--cb-accent);
    transform: translateY(-2px);
    text-decoration: none;
}
.cb-persona-card h2 {
    font-family: var(--cb-font-display);
    font-size: 1.35rem;
    margin: 1rem 0 0.25rem;
}
.cb-persona-tagline {
    color: var(--cb-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}
.cb-persona-meta {
    display: flex;
    gap: 0.5rem;
}

/* Avatars */
.cb-persona-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--cb-font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
}

.cb-persona-chloe { background: linear-gradient(135deg, #C9A961, #e6c47a); color: #2A3B5C; }
.cb-persona-colin { background: linear-gradient(135deg, #4A6FA5, #2A3B5C); color: #e8e4dc; }

.cb-persona-avatar-small {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--cb-font-display);
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

/* Badges */
.cb-badge {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--cb-bg-surface);
    color: var(--cb-text-muted);
    border: 1px solid var(--cb-border);
}
.cb-badge-green { color: var(--cb-green); border-color: var(--cb-green); }
.cb-badge-red { color: var(--cb-red); border-color: var(--cb-red); }

/* ================================================================
   Login Page
   ================================================================ */

.cb-login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.cb-login-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.cb-login-card {
    background: var(--cb-bg-elevated);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-lg);
    padding: 2.5rem 2rem;
}

.cb-login-header {
    text-align: center;
    margin-bottom: 2rem;
}
.cb-login-header h1 {
    font-family: var(--cb-font-display);
    font-size: 1.75rem;
    margin-top: 0.5rem;
}
.cb-login-subtitle {
    color: var(--cb-text-muted);
    font-size: 0.9rem;
}

.cb-login-form { display: flex; flex-direction: column; gap: 1rem; }

.cb-field label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--cb-text-muted);
    margin-bottom: 0.35rem;
}

.cb-field input {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--cb-bg-surface);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius);
    color: var(--cb-text);
    font-family: var(--cb-font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}
.cb-field input:focus {
    outline: none;
    border-color: var(--cb-accent);
}
.cb-field input::placeholder { color: var(--cb-text-dim); }

.cb-login-form .cb-btn-primary {
    width: 100%;
    justify-content: center;
    padding: 0.65rem;
    margin-top: 0.5rem;
}

.cb-login-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--cb-text-dim);
}

.cb-alert { padding: 0.75rem 1rem; border-radius: var(--cb-radius); margin-bottom: 1rem; font-size: 0.9rem; }
.cb-alert-error { background: rgba(231, 76, 60, 0.1); color: var(--cb-error); border: 1px solid rgba(231, 76, 60, 0.3); }

/* ================================================================
   Chat Layout
   ================================================================ */

.cb-chat-page { overflow: hidden; }

.cb-chat-layout {
    display: flex;
    height: 100vh;
    padding-top: var(--cb-topbar-height);
}

/* Sidebar */
.cb-sidebar {
    width: var(--cb-sidebar-width);
    background: var(--cb-bg-elevated);
    border-right: 1px solid var(--cb-border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
}

.cb-sidebar-header {
    padding: 0.75rem;
    border-bottom: 1px solid var(--cb-border);
}

.cb-btn-new-chat {
    width: 100%;
    padding: 0.5rem;
    background: var(--cb-accent-dim);
    border: 1px solid var(--cb-accent);
    border-radius: var(--cb-radius);
    color: var(--cb-accent);
    font-family: var(--cb-font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}
.cb-btn-new-chat:hover { background: rgba(201, 169, 97, 0.25); }

.cb-sidebar-personas {
    padding: 0.5rem;
    border-bottom: 1px solid var(--cb-border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cb-sidebar-persona {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.6rem;
    border-radius: var(--cb-radius);
    color: var(--cb-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s;
}
.cb-sidebar-persona:hover { background: var(--cb-bg-hover); text-decoration: none; color: var(--cb-text); }
.cb-sidebar-persona.active { background: var(--cb-accent-dim); color: var(--cb-accent); }

.cb-sidebar-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.cb-sidebar-sessions {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.cb-session-item {
    display: block;
    padding: 0.5rem 0.6rem;
    border-radius: var(--cb-radius);
    color: var(--cb-text-muted);
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: background 0.15s;
}
.cb-session-item:hover { background: var(--cb-bg-hover); color: var(--cb-text); text-decoration: none; }
.cb-session-item.active { background: var(--cb-blue-dim); color: var(--cb-blue); }

/* Chat Main */
.cb-chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.cb-chat-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--cb-border);
    background: var(--cb-bg-elevated);
}

.cb-sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--cb-text-muted);
    font-size: 1.25rem;
    cursor: pointer;
}

.cb-chat-persona-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.cb-chat-persona-info strong { font-size: 0.95rem; }
.cb-tagline { display: block; font-size: 0.8rem; color: var(--cb-text-muted); }

/* Messages */
.cb-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.cb-message {
    display: flex;
    gap: 0.75rem;
    max-width: 800px;
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: none; }
}

.cb-message-user {
    flex-direction: row-reverse;
    align-self: flex-end;
}

.cb-message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--cb-font-display);
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.cb-message-content {
    background: var(--cb-bg-elevated);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-lg);
    padding: 0.85rem 1.1rem;
    font-size: 0.95rem;
    line-height: 1.65;
    max-width: 700px;
}

.cb-message-user .cb-message-content {
    background: var(--cb-accent-dim);
    border-color: rgba(201, 169, 97, 0.2);
}

.cb-message-content p { margin-bottom: 0.5em; }
.cb-message-content p:last-child { margin-bottom: 0; }

.cb-message-content code {
    font-family: var(--cb-font-mono);
    font-size: 0.88em;
    background: var(--cb-bg-surface);
    padding: 0.15em 0.4em;
    border-radius: 4px;
}

.cb-message-content pre {
    background: var(--cb-bg);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius);
    padding: 0.75rem 1rem;
    overflow-x: auto;
    margin: 0.5em 0;
}
.cb-message-content pre code {
    background: none;
    padding: 0;
}

/* Sources panel */
.cb-sources {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--cb-border);
    font-size: 0.8rem;
    color: var(--cb-text-dim);
}
.cb-sources summary {
    cursor: pointer;
    color: var(--cb-text-muted);
    font-weight: 500;
}
.cb-sources ul {
    list-style: none;
    margin-top: 0.35rem;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.cb-sources li {
    padding: 0.15rem 0;
}

/* Streaming cursor */
.cb-typing::after {
    content: '|';
    animation: blink 0.7s infinite;
    color: var(--cb-accent);
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

/* Input area */
.cb-chat-input-area {
    padding: 0.75rem 1.25rem 1rem;
    border-top: 1px solid var(--cb-border);
    background: var(--cb-bg-elevated);
}

.cb-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    background: var(--cb-bg-surface);
    border: 1px solid var(--cb-border);
    border-radius: var(--cb-radius-lg);
    padding: 0.5rem;
    transition: border-color 0.2s;
}
.cb-input-wrapper:focus-within {
    border-color: var(--cb-accent);
}

.cb-input-wrapper textarea {
    flex: 1;
    background: none;
    border: none;
    color: var(--cb-text);
    font-family: var(--cb-font-body);
    font-size: 0.95rem;
    line-height: 1.5;
    resize: none;
    max-height: 150px;
    padding: 0.35rem 0.5rem;
}
.cb-input-wrapper textarea:focus { outline: none; }
.cb-input-wrapper textarea::placeholder { color: var(--cb-text-dim); }

.cb-btn-send {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cb-accent);
    color: #0a0f1c;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s, opacity 0.2s;
}
.cb-btn-send:hover { background: #d4b46e; }
.cb-btn-send:disabled { opacity: 0.4; cursor: not-allowed; }

.cb-input-meta {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0.25rem 0;
    font-size: 0.75rem;
    color: var(--cb-text-dim);
}

.cb-model-tag {
    font-family: var(--cb-font-mono);
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    background: var(--cb-bg-surface);
    border-radius: 3px;
}

/* ================================================================
   Error Page
   ================================================================ */

.cb-error {
    text-align: center;
    margin-top: calc(var(--cb-topbar-height) + 4rem);
    padding: 2rem;
}
.cb-error h1 { font-family: var(--cb-font-display); font-size: 2rem; margin-bottom: 1rem; }
.cb-error p { color: var(--cb-text-muted); margin-bottom: 2rem; }

/* ================================================================
   Responsive
   ================================================================ */

@media (max-width: 768px) {
    .cb-sidebar {
        position: fixed;
        top: var(--cb-topbar-height);
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
        z-index: 90;
    }
    .cb-sidebar.open { transform: translateX(0); }
    .cb-sidebar-toggle { display: block; }

    .cb-chat-messages { padding: 1rem; }
    .cb-message-content { max-width: calc(100vw - 100px); }

    .cb-persona-grid { grid-template-columns: 1fr; }
}