:root {
    --bg: #0f1115;
    --panel: #181b22;
    --panel-2: #1f242d;
    --border: #2a313c;
    --text: #e7ebf0;
    --muted: #8b94a3;
    --accent: #4f8cff;
    --accent-2: #3a6fd8;
    --green: #2ecc71;
    --red: #ff5d5d;
    --amber: #f0a83a;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--red); }

/* ---- Login ---- */
.overlay {
    position: fixed; inset: 0;
    background: rgba(8, 10, 14, 0.85);
    display: flex; align-items: center; justify-content: center;
    z-index: 50;
}
.login-card, .settings-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
    width: 380px;
    max-width: 92vw;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.settings-card { width: 560px; max-height: 86vh; overflow-y: auto; }
.login-card h1 { margin: 0 0 6px; font-size: 22px; }
.login-card input, .settings-card input, .settings-card textarea {
    width: 100%; margin-top: 14px;
    background: var(--panel-2); border: 1px solid var(--border);
    color: var(--text); border-radius: 8px; padding: 11px 12px; font-size: 14px;
    font-family: inherit;
}
.login-card button { margin-top: 16px; width: 100%; }

/* ---- App layout ---- */
#app { display: flex; flex-direction: column; height: 100vh; }
header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 18px; border-bottom: 1px solid var(--border);
    background: var(--panel);
}
.brand { font-weight: 600; font-size: 16px; }
.tag {
    font-size: 10px; background: var(--accent-2); color: #fff;
    padding: 2px 6px; border-radius: 4px; vertical-align: middle; margin-left: 4px;
}
.header-controls { display: flex; gap: 10px; align-items: center; }

main {
    flex: 1; display: grid; grid-template-columns: 1fr 1fr;
    gap: 14px; padding: 14px; overflow: hidden;
}
.panel {
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 12px; display: flex; flex-direction: column; overflow: hidden;
}
.panel-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px; border-bottom: 1px solid var(--border);
}
.panel-head h2 { margin: 0; font-size: 14px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }

.audio-controls { display: flex; gap: 8px; }
.status-row {
    display: flex; align-items: center; gap: 14px;
    padding: 8px 16px; border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.status { padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.status.idle { background: #2a313c; color: var(--muted); }
.status.listening { background: rgba(46,204,113,.15); color: var(--green); }
.status.working { background: rgba(240,168,58,.15); color: var(--amber); }
.status.error { background: rgba(255,93,93,.15); color: var(--red); }
.auto-toggle { color: var(--muted); display: flex; align-items: center; gap: 6px; cursor: pointer; }

.transcript {
    flex: 1; overflow-y: auto; padding: 16px;
    font-size: 15px; line-height: 1.6; white-space: pre-wrap;
}
.transcript:empty::before { content: attr(placeholder); color: var(--muted); }

.ask-row {
    display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border);
    align-items: flex-end;
}
.ask-row textarea {
    flex: 1; resize: none; background: var(--panel-2); border: 1px solid var(--border);
    color: var(--text); border-radius: 8px; padding: 10px; font-family: inherit; font-size: 14px;
}

.answer { flex: 1; overflow-y: auto; padding: 18px; font-size: 15px; line-height: 1.65; }
.answer h1, .answer h2, .answer h3 { margin-top: 1em; }
.answer pre {
    background: #0c0e12; border: 1px solid var(--border); border-radius: 8px;
    padding: 12px; overflow-x: auto;
}
.answer code { background: #0c0e12; padding: 2px 5px; border-radius: 4px; font-size: 13px; }
.answer pre code { background: none; padding: 0; }
.answer strong { color: #fff; }
.answer .cursor { animation: blink 1s steps(2) infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ---- Buttons & inputs ---- */
button {
    cursor: pointer; border: none; border-radius: 8px;
    padding: 9px 16px; font-size: 14px; font-weight: 500; font-family: inherit;
}
button.primary { background: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-2); }
button.ghost { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.ghost:hover { background: var(--border); }
button.small { padding: 5px 10px; font-size: 12px; }
button.active { background: var(--red) !important; color: #fff; }
button:disabled { opacity: .5; cursor: not-allowed; }

select {
    background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
    border-radius: 8px; padding: 8px 10px; font-size: 14px; font-family: inherit;
}

/* ---- Settings fields ---- */
.field { margin-top: 14px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field textarea { min-height: 70px; resize: vertical; }
.settings-actions { display: flex; gap: 10px; margin-top: 20px; }

@media (max-width: 820px) {
    main { grid-template-columns: 1fr; grid-template-rows: 1fr 1fr; }
}