/* ─── Tokens ─────────────────────────────────────────────────── */
:root {
  --bg:          #F7F0E3;
  --bg-warm:     #F0E6CE;
  --surface:     #EDE0C4;
  --border:      #D9C9A8;
  --text:        #3D2E1A;
  --text-muted:  #7A6448;
  --accent:      #B07D3A;
  --accent-soft: #C9965A;
  --one-bg:      #FDFAF4;
  --user-bg:     #E8D9BC;
  --shadow:      rgba(80, 50, 10, 0.08);
  --radius:      1.2rem;
  --font-serif:  Georgia, 'Times New Roman', serif;
  --font-sans:   -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w:       680px;
}

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

/* Ensure [hidden] always wins, even against ID/class rules with display values */
[hidden] { display: none !important; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

/* ─── Auth page layout (login.html, callback.html) ───────────── */
body.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: 2rem 1.5rem;
}

/* ─── Layout ─────────────────────────────────────────────────── */
#app {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: var(--max-w);
  margin: 0 auto;
}

/* ─── Header ─────────────────────────────────────────────────── */
header {
  flex-shrink: 0;
  padding: 1.25rem 1.5rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: lowercase;
}

/* ─── Conversation ───────────────────────────────────────────── */
main {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 1rem 0.5rem;
  scroll-behavior: smooth;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

/* ─── Messages ───────────────────────────────────────────────── */
.message {
  display: flex;
  max-width: 88%;
  animation: fadeUp 0.25s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.message.one {
  align-self: flex-start;
}

.message.user {
  align-self: flex-end;
}

.message p,
.message .bubble {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius);
  line-height: 1.65;
  font-size: 1rem;
}

.message.one p,
.message.one .bubble {
  background: var(--one-bg);
  border: 1px solid var(--border);
  font-family: var(--font-serif);
  color: var(--text);
  border-bottom-left-radius: 0.3rem;
  box-shadow: 0 1px 4px var(--shadow);
}

.message.user p,
.message.user .bubble {
  background: var(--user-bg);
  color: var(--text);
  font-family: var(--font-sans);
  border-bottom-right-radius: 0.3rem;
  border: 1px solid var(--border);
}

/* Typing cursor for streaming */
.bubble.streaming::after {
  content: '▎';
  display: inline-block;
  margin-left: 1px;
  animation: blink 0.9s step-start infinite;
  color: var(--accent-soft);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ─── Footer / Input ─────────────────────────────────────────── */
footer {
  flex-shrink: 0;
  padding: 0.75rem 1rem 1rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

#input-form {
  display: flex;
  align-items: flex-end;
  gap: 0.6rem;
  background: var(--one-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  box-shadow: 0 1px 6px var(--shadow);
  transition: border-color 0.2s;
}

#input-form:focus-within {
  border-color: var(--accent-soft);
}

#user-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  line-height: 1.5;
  max-height: 160px;
  overflow-y: auto;
  /* Safari fix */
  -webkit-appearance: none;
}

#user-input::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

#send-btn {
  flex-shrink: 0;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, opacity 0.2s;
  color: #fff;
  padding: 0;
}

#send-btn svg {
  width: 1rem;
  height: 1rem;
  margin-left: -1px;
}

#send-btn:hover { background: var(--accent-soft); }
#send-btn:disabled { opacity: 0.4; cursor: default; }

/* ─── Mobile tweaks ──────────────────────────────────────────── */
@media (max-width: 500px) {
  main { padding: 1rem 0.75rem 0.5rem; }
  footer { padding: 0.5rem 0.75rem 0.75rem; }

  .message p,
  .message .bubble {
    font-size: 0.97rem;
    padding: 0.75rem 0.9rem;
  }
}

/* ─── Scrollbar (subtle) ─────────────────────────────────────── */
main::-webkit-scrollbar        { width: 4px; }
main::-webkit-scrollbar-track  { background: transparent; }
main::-webkit-scrollbar-thumb  { background: var(--border); border-radius: 2px; }

/* ─── Admin panel ────────────────────────────────────────────── */
#admin {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  max-width: var(--max-w);
  margin: 0 auto;
}

.admin-label {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  font-weight: normal;
}

.admin-main {
  flex: 1;
  padding: 2rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.admin-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-section h2 {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: normal;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.invite-form {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.invite-form input {
  flex: 1;
  padding: 0.65rem 1rem;
  background: var(--one-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.invite-form input::placeholder { color: var(--text-muted); opacity: 0.7; }
.invite-form input:focus        { border-color: var(--accent-soft); }

.invite-form button {
  padding: 0.65rem 1.25rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s, opacity 0.2s;
}

.invite-form button:hover    { background: var(--accent-soft); }
.invite-form button:disabled { opacity: 0.45; cursor: default; }

.invite-status {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

.admin-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

.invites-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.invites-table th {
  text-align: left;
  font-weight: normal;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0 1rem 0.6rem 0;
  border-bottom: 1px solid var(--border);
}

.invites-table td {
  padding: 0.7rem 1rem 0.7rem 0;
  border-bottom: 1px solid var(--surface);
  color: var(--text);
  vertical-align: middle;
}

.td-email { font-family: var(--font-sans); }
.td-date  { color: var(--text-muted); font-size: 0.85rem; }

.status-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
}

.status-badge.pending  { background: var(--surface); color: var(--text-muted); }
.status-badge.accepted { background: #e6ede4; color: #4a6e40; }

.table-empty {
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  padding: 1.25rem 0;
}

@media (max-width: 500px) {
  .admin-main { padding: 1.5rem 0.75rem 2rem; }
  .invite-form { flex-direction: column; align-items: stretch; }
  .invites-table th:last-child,
  .invites-table td:last-child { display: none; } /* hide Expires on mobile */
}

/* ─── Auth pages (login, callback) ──────────────────────────── */
.auth-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
  max-width: 340px;
  text-align: center;
}

.auth-wrap .logo {
  font-size: 1.5rem;
  letter-spacing: 0.14em;
}

.auth-tagline {
  font-family: var(--font-serif);
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
  margin-top: -0.5rem;
}

#magic-link-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

#email-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--one-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
  text-align: center;
}

#email-input::placeholder { color: var(--text-muted); opacity: 0.7; }
#email-input:focus        { border-color: var(--accent-soft); }

#magic-link-btn {
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

#magic-link-btn:hover    { background: var(--accent-soft); }
#magic-link-btn:disabled { opacity: 0.45; cursor: default; }

.auth-note {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  min-height: 1.4em;
}

/* ─── Sign-out button ────────────────────────────────────────── */
header {
  position: relative;
}

.sign-out {
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  opacity: 0.55;
  transition: opacity 0.2s;
  letter-spacing: 0.03em;
}

.sign-out:hover { opacity: 1; }

/* ─── Session divider ────────────────────────────────────────── */
.session-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border);
  font-size: 1.4rem;
  letter-spacing: 0.4em;
  padding: 0.5rem 0 0.25rem;
  user-select: none;
}

.session-divider::before {
  content: '· · ·';
}