/* Episode Hub — base styles.
   No CSS framework. Plain, readable, easy to evolve. */

:root {
  --bg: #0f1115;
  --bg-elevated: #181b22;
  --bg-card: #1e222c;
  --border: #2a2f3a;
  --border-strong: #3a4150;
  --text: #e7ebf2;
  --text-muted: #98a1b3;
  --text-dim: #6b7384;
  --accent: #5b8def;
  --accent-hover: #7aa2ff;
  --danger: #e0556a;
  --warning: #d3aa3e;
  --success: #58c293;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-weight: 600;
  line-height: 1.25;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.1rem; }

code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

/* ---------- layout ---------- */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.app-header .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--text);
}

.app-header .brand .wordmark {
  font-size: 1.05rem;
}

.app-header .brand .app-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding-left: 12px;
  border-left: 1px solid var(--border);
}

.app-header nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.user-menu .user-name {
  color: var(--text);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px;
}

.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.page-header .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  background: var(--bg-card);
  color: var(--text);
  font-family: inherit;
  transition: background 120ms, border-color 120ms, color 120ms;
}
.btn:hover { background: var(--border); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-card); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #f06b80; }

.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* ---------- cards / lists ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text);
}

.card-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.card-actions {
  margin-top: 8px;
  display: flex;
  gap: 8px;
}

.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--border);
  color: var(--text-muted);
}

.chip-accent { background: rgba(91, 141, 239, 0.18); color: var(--accent); }
.chip-success { background: rgba(88, 194, 147, 0.18); color: var(--success); }
.chip-warning { background: rgba(211, 170, 62, 0.18); color: var(--warning); }
.chip-danger { background: rgba(224, 85, 106, 0.18); color: var(--danger); }

/* ---------- empty state ---------- */

.empty-state {
  text-align: center;
  padding: 48px 24px;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.empty-state h3 {
  color: var(--text);
  margin-bottom: 8px;
}

/* ---------- forms ---------- */

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.form-row label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-row textarea {
  min-height: 80px;
  resize: vertical;
}

.form-row .hint {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* ---------- sign-in ---------- */

.sign-in-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.sign-in-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
}

.sign-in-card h1 {
  text-align: center;
  margin-bottom: 4px;
}

.sign-in-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 18px 0;
  color: var(--text-dim);
  font-size: 0.8rem;
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.google-btn {
  width: 100%;
  padding: 10px 16px;
  background: #fff;
  color: #111;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: inherit;
  font-size: 0.95rem;
}
.google-btn:hover { background: #f3f3f3; }
.google-btn:disabled { opacity: 0.7; cursor: not-allowed; }

.google-btn svg {
  width: 18px;
  height: 18px;
}

.email-form .btn-primary { width: 100%; }

.error-text {
  background: rgba(224, 85, 106, 0.15);
  color: #f29aa6;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.muted-link {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
}

/* ---------- modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 24px;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow);
}

.modal-header {
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { margin: 0; font-size: 1.1rem; }

.modal-body { padding: 20px; }

.modal-error {
  margin: 0 20px 12px;
  background: rgba(224, 85, 106, 0.15);
  color: #f29aa6;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.modal-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.modal-text { margin: 0; color: var(--text); }

/* ---------- toast ---------- */

#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 200;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--text);
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  animation: toast-in 200ms ease;
  min-width: 220px;
}

.toast-info { border-left: 3px solid var(--accent); }
.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }

.toast-leaving {
  opacity: 0;
  transition: opacity 280ms;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- project / season / episode views ---------- */

.tab-bar {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab {
  padding: 10px 16px;
  cursor: pointer;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
  font-size: 0.92rem;
}

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

.season-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
}

.season-header {
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: var(--bg-card);
}

.season-header:hover { background: var(--bg-elevated); }

.season-header .title { font-weight: 600; }
.season-header .meta { color: var(--text-muted); font-size: 0.85rem; }

.season-body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--border);
}

.episode-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.episode-row:last-child { border-bottom: none; }

.episode-code {
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-right: 8px;
}

.episode-title { color: var(--text); }

/* ---------- table ---------- */

table.list {
  width: 100%;
  border-collapse: collapse;
}
table.list th,
table.list td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
table.list th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.85rem;
}

/* ---------- loading ---------- */

.loading {
  color: var(--text-muted);
  padding: 24px;
  text-align: center;
}

/* ---------- utility ---------- */

.row { display: flex; gap: 8px; align-items: center; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.spacer { flex: 1; }
.muted { color: var(--text-muted); }
.dim { color: var(--text-dim); }
.hidden { display: none !important; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }