/**
 * Teacher Dashboard Wireframes – Shared styles
 * Matches lekkeleer-lees admin patterns (cards, tables, sections)
 */
:root {
  --sky: #e8f4ff;
  --blue: #3b9ed4;
  --navy: #1a3a5c;
  --green: #2ecc71;
  --yellow: #ffd93d;
  --orange: #ff8c42;
  --white: #ffffff;
  --text: #1a2332;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Nunito", sans-serif;
  background: var(--sky);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 48px;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(255, 217, 61, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 90% 80%, rgba(59, 158, 212, 0.15) 0%, transparent 45%);
}

/* Header */
.td-header {
  width: 100%;
  max-width: 720px;
  padding: 24px 20px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.td-logo { font-size: 1.4rem; font-weight: 800; color: var(--navy); }
.td-logo span { color: var(--blue); }
.td-badge {
  padding: 6px 12px;
  background: rgba(59, 158, 212, 0.2);
  color: var(--navy);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 999px;
}
.td-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.td-nav a {
  padding: 8px 14px;
  background: var(--white);
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.td-nav a:hover { background: #f1f5f9; }
.td-nav a.active { background: var(--blue); color: var(--white); }
.td-nav a.td-nav-external {
  margin-left: auto;
  background: rgba(46, 204, 113, 0.12);
  border: 1px solid rgba(46, 204, 113, 0.35);
  color: var(--navy);
}
.td-nav a.td-nav-external:hover { background: rgba(46, 204, 113, 0.2); }

/* Main content */
.td-main {
  width: 100%;
  max-width: 720px;
  padding: 0 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Cards */
.td-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}
.td-card {
  background: var(--white);
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  text-align: center;
}
.td-card-val {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--navy);
}
.td-card-lbl { font-size: 0.8rem; color: #64748b; }

/* Sections */
.td-section {
  background: var(--white);
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.td-section h2 {
  margin: 0 0 16px;
  font-size: 1rem;
  color: #1e293b;
}
.td-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.td-section-header h2 {
  margin: 0;
}
.td-status {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 999px;
}
.td-status-published {
  background: rgba(46, 204, 113, 0.2);
  color: #15803d;
}
.td-status-unpublished {
  background: rgba(255, 217, 61, 0.3);
  color: #92400e;
}

/* Tables */
.td-table-wrap { overflow-x: auto; }
.td-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.td-table th, .td-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
}
.td-table th { font-weight: 700; color: #64748b; }
.td-table .status-ok { color: var(--green); }
.td-table .status-behind { color: var(--orange); }

/* Homework picker */
.td-picker-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
}
.td-picker-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.td-picker-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: #64748b;
}
.td-picker-group select {
  padding: 10px 14px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  min-width: 140px;
}
.td-picker-group select:focus {
  outline: none;
  border-color: var(--blue);
}
.td-picker-sep { color: #94a3b8; font-weight: 700; }
.td-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.td-btn {
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
}
.td-btn-primary {
  background: var(--blue);
  color: var(--white);
}
.td-btn-primary:hover { background: #2d8bc4; }
.td-btn-secondary {
  background: #f1f5f9;
  color: var(--navy);
}
.td-btn-secondary:hover { background: #e2e8f0; }

/* Intro & subsections */
.td-intro {
  margin: 0 0 20px;
  color: #64748b;
  font-size: 0.9rem;
  line-height: 1.5;
}
.td-subsection {
  margin: 24px 0 0;
  font-size: 0.95rem;
  color: #1e293b;
  font-weight: 700;
}
.td-actions-end { margin-top: 24px; }
.td-picker-row-spaced { margin-bottom: 16px; }
.td-homework-term { margin: 0; color: #475569; font-size: 0.95rem; }
.td-homework-detail { margin: 4px 0 0; font-size: 0.9rem; color: #334155; }
.td-homework-meta { margin: 8px 0 0; font-size: 0.85rem; color: #64748b; }
.td-quick-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.td-day-label {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: #64748b;
}

/* Activity list */
.td-activity-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.td-activity-item {
  display: flex;
  flex-direction: column;
  padding: 0;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  overflow: hidden;
}
.td-activity-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
}
.td-activity-header:hover { background: #f1f5f9; }
.td-activity-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  color: #64748b;
  transition: transform 0.2s;
}
.td-activity-item.expanded .td-activity-toggle { transform: rotate(180deg); }
.td-activity-toggle:hover { color: var(--blue); background: rgba(59, 158, 212, 0.1); }
.td-activity-header .td-activity-info { flex: 1; min-width: 0; }
.td-activity-item .td-activity-name {
  font-weight: 600;
  color: var(--navy);
}
.td-activity-item .td-activity-meta {
  font-size: 0.85rem;
  color: #64748b;
  margin-top: 2px;
}
.td-activity-stats {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-shrink: 0;
  font-size: 0.75rem;
  color: #64748b;
}
.td-activity-stat-item {
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.td-activity-stat-label {
  color: #94a3b8;
  font-weight: 500;
}
.td-activity-stat-value {
  font-weight: 700;
  color: #334155;
}
.td-activity-stat-value.td-activity-stat-behind {
  color: var(--orange);
}
.td-activity-stat-value.td-activity-stat-all-done {
  color: var(--green);
}
.td-activity-item .td-activity-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-shrink: 0;
}
.td-activity-dropdown {
  display: none;
  padding: 12px 16px 16px;
  border-top: 1px solid #e2e8f0;
}
.td-activity-item.expanded .td-activity-dropdown { display: block; }
.td-activity-instruction {
  margin-bottom: 12px;
}
.td-activity-instruction label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #64748b;
  margin-bottom: 4px;
}
.td-instruction-display {
  margin: 0;
  padding: 10px 12px;
  background: #f8fafc;
  border-radius: 6px;
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.5;
  border-left: 4px solid var(--blue);
}
.td-sentence-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 12px;
  background: var(--white);
  border-radius: 6px;
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.6;
}
.td-sentence-list li {
  padding: 4px 0;
  border-bottom: 1px solid #f1f5f9;
}
.td-sentence-list li:last-child { border-bottom: none; }
.td-activity-item.td-activity-empty {
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  background: #f8fafc;
  border-style: dashed;
  cursor: default;
}
.td-activity-empty .td-activity-header { display: none; }
.td-activity-empty .td-activity-name {
  display: block;
  color: #94a3b8;
  font-weight: 500;
}
.td-activity-empty .td-activity-meta {
  margin-top: 4px;
  font-size: 0.8rem;
}
.td-btn-icon {
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.td-btn-customise {
  padding: 4px 8px;
  font-size: 0.75rem;
  font-weight: 500;
  background: transparent;
  color: #94a3b8;
  border: none;
}
.td-btn-customise:hover { color: var(--blue); background: rgba(59, 158, 212, 0.08); }
.td-btn-add {
  padding: 10px 18px;
  font-size: 0.9rem;
  background: #f1f5f9;
  color: var(--navy);
  border: 2px dashed #cbd5e1;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}
.td-btn-add:hover { background: #e2e8f0; border-color: var(--blue); color: var(--blue); }

/* Day tabs (horizontal) */
.td-day-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 0;
  flex-wrap: wrap;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 0;
}
.td-day-tab {
  padding: 12px 20px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: inherit;
  color: #64748b;
}
.td-day-tab:hover { color: var(--navy); }
.td-day-tab.active {
  color: var(--blue);
  border-bottom-color: var(--blue);
}
.td-day-panel {
  padding: 20px 0 0;
  border-top: none;
}
.td-day-panel:not(.active) { display: none; }
.td-section-subtitle {
  font-size: 0.85rem;
  color: #64748b;
  margin: 6px 0 12px;
}

/* Wireframe note */
.td-wireframe-note {
  font-size: 0.8rem;
  color: #94a3b8;
  padding: 8px 12px;
  background: #f8fafc;
  border-radius: 8px;
  margin-top: 24px;
}