/* Lesson Prep Planner styles — implements DESIGN.md exactly.
   Color palette, typography, and component rules below are adapted from
   design-trials/trial-5-rootmap-style.html (the approved visual reference). */

:root {
  --bg: #fbf2e4;
  --card: #fffcf6;
  --mint: #e3ebe0;
  --primary: #4b7c63;
  --primary-dark: #2f4d3d;
  --danger: #b5582f;
  --apricot: #fbe9d7;
  --silver: #ded0ba;
  --text: #3b2a1a;
  --muted: #8a7863;
  --border: #eee1d0;
  --on-primary: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  /* Rounded, friendly system sans (stand-in for RootMap's Nunito — no CDN allowed) */
  font-family: -apple-system, 'Segoe UI', Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.phone-shell {
  max-width: 480px;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.brand .logo-mark {
  font-size: 1.6rem;
}

.brand h1 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 0;
}

.panel {
  background: var(--card);
  border-radius: 22px;
  padding: 1.25rem 1.3rem;
  margin-bottom: 1.5rem;
}

.panel-mint {
  background: var(--mint);
}

.panel h2 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 0 0 0.4rem;
}

.panel p {
  margin: 0 0 1rem;
  color: var(--text);
  font-size: 0.95rem;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  background: var(--primary);
  color: var(--on-primary);
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.2rem;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  font-family: inherit;
}

.pill-btn:hover {
  background: var(--primary-dark);
}

.pill-btn-silver {
  background: var(--silver);
  color: var(--text);
}

.pill-btn-outline {
  width: auto;
  background: transparent;
  color: var(--danger);
  border: 1.5px solid var(--danger);
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
}

.pill-btn-outline:hover {
  background: var(--danger);
  color: var(--on-primary);
}

/* Text/date/select fields only — checkboxes are styled separately below
   so this full-width rule doesn't stretch them (see DESIGN.md pitfall). */
select,
input[type="text"],
input[type="date"] {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.6rem 0.8rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 100%;
  margin-bottom: 0.4rem;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  flex: none;
  margin: 0;
}

label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.inline-error {
  color: var(--danger);
  font-size: 0.8rem;
  display: block;
  margin: -0.1rem 0 0.6rem;
}

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: bold;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.empty-message {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}

.summary-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.chip {
  background: var(--apricot);
  color: var(--text);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.activity-card {
  background: var(--card);
  border-radius: 20px;
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

.card-top-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

.activity-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--text);
}

.status-badge {
  font-size: 0.7rem;
  font-weight: bold;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  color: var(--on-primary);
  white-space: nowrap;
}

.status-ready {
  background: var(--primary);
}

.status-needs-prep {
  background: var(--danger);
}

.meta-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.meta-pill {
  background: var(--mint);
  color: var(--primary-dark);
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.activity-photo {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 0.75rem;
}

.materials-list {
  list-style: none;
  padding: 0;
  margin: 0 0 0.7rem;
  font-size: 0.88rem;
}

.materials-list li {
  padding: 0.2rem 0;
}

.materials-list label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-size: inherit;
  margin-bottom: 0;
}

.card-actions {
  text-align: right;
}

.reset-panel {
  text-align: center;
}