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

:root {
    --bg-primary: #0f0f13;
    --bg-secondary: #1a1a24;
    --bg-message-user: #2a2a3d;
    --bg-message-assistant: #1e1e2e;
    --text-primary: #e0e0e8;
    --text-secondary: #9090a0;
    --text-muted: #606070;
    --accent: #6c63ff;
    --accent-hover: #5a52e0;
    --green: #4caf50;
    --yellow: #ff9800;
    --red: #f44336;
    --border: #2a2a3a;
    --radius: 10px;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ---- Header / Stats Bar ---- */
#stats-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.5px;
}

.stats {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.stat strong {
    color: var(--text-primary);
}

.controls {
    display: flex;
    gap: 8px;
}

/* ---- Chat Area ---- */
#chat-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ---- Messages ---- */
.message {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: var(--radius);
    line-height: 1.6;
    font-size: 14px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.message.user {
    align-self: flex-end;
    background: var(--bg-message-user);
    border: 1px solid var(--border);
}

.message.assistant {
    align-self: flex-start;
    background: var(--bg-message-assistant);
    border: 1px solid var(--border);
}

.message.assistant .tool-call {
    display: inline-block;
    background: rgba(108, 99, 255, 0.1);
    border: 1px solid rgba(108, 99, 255, 0.3);
    border-radius: 6px;
    padding: 2px 8px;
    font-size: 12px;
    color: var(--accent);
    margin: 4px 2px;
}

.message.system {
    align-self: center;
    background: transparent;
    color: var(--text-muted);
    font-size: 13px;
    text-align: center;
    padding: 8px;
}

/* Markdown-ish rendering */
.message.assistant strong { color: #fff; }
.message.assistant code {
    background: rgba(255,255,255,0.08);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 13px;
}
.message.assistant a { color: var(--accent); text-decoration: none; }
.message.assistant a:hover { text-decoration: underline; }

/* Confidence badges */
.conf-badge {
    display: inline-block;
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 4px;
    font-weight: 600;
}
.conf-badge.fresh { background: rgba(76,175,80,0.2); color: var(--green); }
.conf-badge.aging { background: rgba(255,152,0,0.2); color: var(--yellow); }
.conf-badge.outdated { background: rgba(244,67,54,0.2); color: var(--red); }

/* Loading animation */
.message.loading {
    align-self: flex-start;
    color: var(--text-muted);
}
.message.loading .dots span {
    animation: blink 1.4s infinite;
    font-size: 20px;
}
.message.loading .dots span:nth-child(2) { animation-delay: 0.2s; }
.message.loading .dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.2; } 40% { opacity: 1; } }

/* Greeting */
.greeting {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 16px;
}
.greeting h2 {
    color: var(--text-primary);
    font-size: 22px;
    margin-bottom: 8px;
}

/* ---- Quick Actions ---- */
#quick-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    padding-top: 8px;
    justify-content: center;
}

.quick-action {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}
.quick-action:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ---- Input Bar ---- */
#input-bar {
    padding: 12px 20px 16px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 6px 8px;
}

#message-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    resize: none;
    outline: none;
    max-height: 120px;
    padding: 6px 4px;
    line-height: 1.4;
}

#message-input::placeholder {
    color: var(--text-muted);
}

#send-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    white-space: nowrap;
}
#send-btn:hover { background: var(--accent-hover); }
#send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---- Icon Buttons ---- */
.icon-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 18px;
    width: 38px;
    height: 38px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn.active {
    background: rgba(108, 99, 255, 0.15);
    border-color: var(--accent);
    color: var(--accent);
}

/* Mic listening animation */
#mic-btn.listening {
    animation: pulse 1.2s ease-in-out infinite;
    border-color: var(--red);
    color: var(--red);
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(244, 67, 54, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(244, 67, 54, 0); }
}

/* ---- Scrollbar ---- */
#chat-area::-webkit-scrollbar { width: 6px; }
#chat-area::-webkit-scrollbar-track { background: transparent; }
#chat-area::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* ---- Auth Gate ---- */
#auth-gate {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

#auth-gate.hidden { display: none; }

.auth-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px 32px;
    text-align: center;
    width: 340px;
    max-width: 90vw;
}

.auth-card h2 {
    color: var(--accent);
    font-size: 22px;
    margin-bottom: 6px;
}

.auth-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.auth-card input[type="password"] {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    margin-bottom: 12px;
}

.auth-card input[type="password"]:focus {
    border-color: var(--accent);
}

.auth-card button {
    width: 100%;
    padding: 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.auth-card button:hover { background: var(--accent-hover); }
.auth-card button:disabled { opacity: 0.4; cursor: not-allowed; }

.auth-error {
    color: var(--red);
    font-size: 13px;
    margin-top: 10px;
    min-height: 18px;
}

.app-hidden { display: none !important; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
    .stats { display: none; }
    .message { max-width: 95%; }
    #quick-actions { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; }
}