/* Nightfall app shell — screens, auth, lobby, chat, rating */

.screen { display: flex; }
.screen.hidden { display: none !important; }

/* ── AUTH ────────────────────────────────────────────────────── */
#auth-screen {
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  padding: 32px 16px;
  background: var(--bg);
}

.auth-inner {
  width: 100%;
  max-width: 420px;
}

.brand {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 600;
  color: var(--fg);
  text-align: center;
  margin-bottom: 8px;
}

.brand-sub {
  font-size: 14px;
  color: var(--fg-dim);
  text-align: center;
  letter-spacing: 0.03em;
  margin-bottom: 40px;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  gap: 0;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  color: var(--fg-dim);
  font-family: var(--font-body);
  font-size: 14px;
  padding: 12px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, border-color 0.15s;
}

.auth-tab.active {
  color: var(--fg);
  border-bottom-color: var(--accent);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.field-hint {
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0;
  text-transform: none;
  opacity: 0.7;
}

.field input, .field select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.15s;
}

.field input:focus, .field select:focus {
  border-color: var(--accent);
}

.field select option {
  background: var(--surface);
}

.btn-primary {
  background: var(--accent);
  color: #0d0d0d;
  border: none;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 12px 24px;
  cursor: pointer;
  transition: opacity 0.15s;
  text-align: center;
}

.btn-primary:hover { opacity: 0.88; }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  width: 100%;
}

.btn-ghost {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg-dim);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 16px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.btn-ghost:hover { border-color: var(--fg-dim); color: var(--fg); }

.auth-error, .rating-error {
  font-size: 13px;
  color: #e05252;
  min-height: 18px;
  text-align: center;
}

/* ── LOBBY ───────────────────────────────────────────────────── */
#lobby-screen {
  min-height: 100vh;
  flex-direction: column;
  background: var(--bg);
}

.lobby-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--fg);
}

.lobby-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 32px;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  width: 100%;
}

.lobby-overline {
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

#lobby-heading {
  font-family: var(--font-display);
  font-size: clamp(36px, 7vw, 56px);
  font-weight: 600;
  color: var(--fg);
  line-height: 1.1;
  margin-bottom: 20px;
}

.lobby-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg-dim);
  margin-bottom: 48px;
  max-width: 420px;
}

.countdown-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 40px;
}

.countdown-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.countdown-clock {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  line-height: 1;
}

#queue-btn {
  max-width: 320px;
}

.lobby-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--fg-dim);
  min-height: 20px;
}

/* ── CHAT ────────────────────────────────────────────────────── */
#chat-screen {
  min-height: 100vh;
  background: var(--bg);
}

.chat-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

.chat-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
  flex-shrink: 0;
}

.chat-prompt-wrap {
  flex: 1;
}

.prompt-eyebrow {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.chat-prompt {
  font-family: var(--font-display);
  font-size: 20px;
  font-style: italic;
  line-height: 1.4;
  color: var(--fg);
}

.chat-timer-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.timer-label {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-dim);
}

.chat-timer {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  min-width: 64px;
  text-align: center;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-dim);
  font-style: italic;
  font-family: var(--font-display);
  font-size: 20px;
  opacity: 0.6;
}

.message {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 15px;
  line-height: 1.5;
}

.message-self {
  background: var(--accent-dim);
  border: 1px solid rgba(245, 166, 35, 0.3);
  align-self: flex-end;
  color: var(--fg);
}

.message-other {
  background: var(--surface);
  border: 1px solid var(--border);
  align-self: flex-start;
  color: var(--fg);
}

.message-system {
  align-self: center;
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  padding: 4px 0;
  font-style: italic;
  max-width: 100%;
}

.chat-input-row {
  display: flex;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 16px;
  outline: none;
  transition: border-color 0.15s;
}

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

.btn-send {
  background: var(--accent);
  border: none;
  border-radius: 4px;
  color: #0d0d0d;
  padding: 10px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s;
  flex-shrink: 0;
}

.btn-send:hover { opacity: 0.85; }

/* ── RATING ──────────────────────────────────────────────────── */
#rating-screen, #rated-screen {
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  background: var(--bg);
}

.rating-inner {
  width: 100%;
  max-width: 400px;
  text-align: center;
  padding: 32px 16px;
}

.rating-heading {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 12px;
}

.rating-sub {
  font-size: 16px;
  color: var(--fg-dim);
  margin-bottom: 40px;
}

.stars-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
}

.star {
  background: none;
  border: none;
  font-size: 40px;
  color: var(--border);
  cursor: pointer;
  transition: color 0.1s, transform 0.1s;
  line-height: 1;
  padding: 4px;
}

.star:hover, .star.selected { color: var(--accent); }
.star:hover { transform: scale(1.1); }

.rating-hint {
  font-size: 13px;
  color: var(--fg-dim);
  margin-bottom: 32px;
  min-height: 20px;
  letter-spacing: 0.04em;
}

.rating-check {
  font-size: 56px;
  color: var(--accent);
  margin-bottom: 16px;
}

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 600px) {
  .lobby-header { padding: 16px 20px; }
  .lobby-body { padding: 40px 20px; }
  .chat-layout { max-width: 100%; }
  .chat-header { padding: 16px 16px; }
  .chat-messages { padding: 16px; }
  .chat-input-row { padding: 12px 16px; }
  .chat-prompt { font-size: 17px; }
  .chat-timer { font-size: 26px; }
  .countdown-clock { font-size: 40px; }
}