:root {
  --bg: #0b1020;
  --bg-soft: #121a33;
  --card: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.1);
  --text: #eef1fa;
  --muted: #8b93b0;
  --accent: #6c8cff;
  --accent-2: #9a6cff;
  --danger: #ff6c7d;
  --ok: #4ade80;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(1200px 800px at 80% -10%, #1b2650 0%, var(--bg) 55%) fixed;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 20px; font-size: 14px; margin: 6px 0; }

#toast {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translate(-50%, -80px);
  background: #1c2750;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  z-index: 100;
  max-width: 90vw;
}
#toast.show { transform: translate(-50%, 0); opacity: 1; }
#toast.error { background: #3d1626; border-color: rgba(255, 108, 125, 0.4); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}
.brand { font-weight: 700; letter-spacing: 0.3px; font-size: 17px; }
.logo { color: var(--accent); }

.chip {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.1s ease;
}
.chip:hover { border-color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.login-card {
  width: min(380px, 92vw);
  margin: 12vh auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login-card h1 { margin: 0; font-size: 24px; }
.login-card p { margin: 0 0 8px; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}
.checkbox { flex-direction: row; align-items: center; gap: 10px; }
.checkbox span { color: var(--text); }

input, select, textarea {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 13px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
textarea { resize: vertical; }
select option { background: #131a33; }

.btn {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.2s ease;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.98); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none;
}
.btn.ghost { background: transparent; }

.main {
  max-width: 860px;
  margin: 0 auto;
  padding: 26px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.settings-grid select:disabled { opacity: 0.5; }

.settings-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.sum-chip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 16px;
  font-size: 15px;
  text-align: center;
  min-width: 0;
}
.sum-chip b { overflow-wrap: anywhere; }
.sum-chip .muted { display: block; font-size: 11.5px; letter-spacing: 0.3px; }
.hint-center { text-align: center; font-size: 13px; margin: -14px 0 0; }

.talk-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 26px 0 6px;
}

.talk-btn {
  position: relative;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  color: #fff;
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35), transparent 45%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 18px 50px rgba(90, 110, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}
.talk-btn:hover { transform: scale(1.03); }
.talk-btn:active { transform: scale(0.97); }
.talk-btn .icon { pointer-events: none; }
.talk-btn .ring {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 2px solid rgba(108, 140, 255, 0.5);
  opacity: 0;
}
.talk-btn.active { background: linear-gradient(135deg, #ff5f70, #ff8f6c); box-shadow: 0 18px 50px rgba(255, 100, 110, 0.35); }
.talk-btn.active .ring { animation: pulse 1.6s ease-out infinite; }

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  100% { transform: scale(1.35); opacity: 0; }
}

.status {
  font-size: 15px;
  color: var(--muted);
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.status[data-state="listening"] { color: var(--ok); border-color: rgba(74, 222, 128, 0.4); }
.status[data-state="speaking"] { color: #c9b3ff; border-color: rgba(154, 108, 255, 0.4); }
.status[data-state="error"] { color: var(--danger); border-color: rgba(255, 108, 125, 0.4); }
.status[data-state="connecting"] { color: #ffd166; border-color: rgba(255, 209, 102, 0.4); }

.transcript {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  min-height: 160px;
  max-height: 42vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.transcript-empty { color: var(--muted); font-size: 14px; text-align: center; margin: auto; }

.line { display: flex; flex-direction: column; gap: 4px; animation: fadein 0.25s ease; }
.line .who { font-size: 12px; letter-spacing: 0.4px; color: var(--muted); text-transform: uppercase; }
.line.user { align-items: flex-end; text-align: right; }
.line.user .text { background: rgba(108, 140, 255, 0.14); border: 1px solid rgba(108, 140, 255, 0.25); }
.line.assistant .text { background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border); }
.line .text {
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 15.5px;
  line-height: 1.55;
  max-width: 92%;
  white-space: pre-wrap;
  word-break: break-word;
}
.line .caret {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.9s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@keyframes fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.profile-card {
  width: min(640px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.profile-card h2 { margin: 0 0 6px; }
.profile-card .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.profile-card .settings-grid {
  grid-template-columns: repeat(2, 1fr);
}

.line.user .text.pending { opacity: 0.55; font-style: italic; }

.topbar-right { display: flex; gap: 12px; align-items: center; }

.admin-card {
  width: min(760px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.admin-card h2 { margin: 0; }
.admin-card .row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }

.users-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.users-table th {
  text-align: left;
  color: var(--muted);
  font-weight: 500;
  font-size: 13px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
.users-table td { padding: 10px; border-bottom: 1px solid var(--border); }
.users-table td.actions { text-align: right; white-space: nowrap; }
.users-table .btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; margin-left: 6px; }
.users-table .pw-input { width: 140px; padding: 6px 10px; font-size: 13px; }
.role-badge {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.role-badge.admin { color: #ffd166; border-color: rgba(255, 209, 102, 0.4); }

@media (max-width: 640px) {
  .settings-grid { grid-template-columns: 1fr; }
  .profile-card .row { grid-template-columns: 1fr; }
  .talk-btn { width: 160px; height: 160px; }
  .topbar { padding: 14px 16px; }
  .admin-card .row { grid-template-columns: 1fr; }
  .users-table th:nth-child(4), .users-table td:nth-child(4) { display: none; }
  .settings-summary { flex-wrap: nowrap; gap: 6px; }
  .sum-chip { flex: 1 1 0; padding: 6px 4px; font-size: 12.5px; border-radius: 10px; }
  .sum-chip .muted { font-size: 10px; letter-spacing: 0.2px; }
}