@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');

* {
  box-sizing: border-box;
}

:root {
  --font-main: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-main: #4a443f;
  --text-light: #9c8f83;
  --lines: #eaddd3;
  --accent-blue: #3498db;
  --accent-blue-bold: #0d6efd;
  --bg-main: #fdfaf6;
  --bg-surface: #ffffff;
  --bg-warm: #f4f1ed;
}

body {
  margin: 0;
  font-family: var(--font-main);
  background: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
}

/* Connect Screen */
.connect-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: linear-gradient(135deg, #f4f1ed 0%, #eaddd3 50%, #dcd7d1 100%);
}

.connect-card {
  background: linear-gradient(180deg, #ffffff, #fdfaf6);
  border-radius: 20px;
  padding: 48px 40px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  box-shadow: 0 24px 80px rgba(74, 68, 63, 0.15), 0 0 0 1px var(--lines);
}

.connect-card::before {
  content: '';
  display: block;
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: url('logo.png') center/contain no-repeat;
}

.connect-card h1 {
  margin: 0 0 8px;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
}

.connect-card p {
  margin: 0 0 24px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.5;
}

.room-code-input {
  width: 100%;
  padding: 18px;
  font-size: 22px;
  font-family: var(--font-main);
  font-weight: 500;
  text-align: center;
  letter-spacing: 2px;
  border: 2px solid var(--lines);
  border-radius: 14px;
  margin-bottom: 16px;
  background: var(--bg-surface);
  color: var(--text-main);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.room-code-input::placeholder {
  color: var(--text-light);
  letter-spacing: 1px;
  font-weight: 400;
}

.room-code-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.15);
}

.room-code-input.error {
  border-color: #e74c3c;
  animation: shake 0.3s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.connect-btn {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  font-family: var(--font-main);
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-bold) 100%);
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(52, 152, 219, 0.3);
}

.connect-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(52, 152, 219, 0.4);
}

.connect-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.connect-error {
  color: #e74c3c;
  font-size: 14px;
  margin: 16px 0 0;
}

.connect-hint {
  color: var(--text-light);
  font-size: 13px;
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--lines);
}

/* Tracker Screen */
.tracker-screen {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--bg-main);
}

.tracker-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--lines);
  flex-wrap: wrap;
  box-shadow: 0 2px 12px rgba(74, 68, 63, 0.06);
}

.tracker-toolbar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.connection-status {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.connection-status.connected {
  background: #d4edda;
  color: #155724;
}

.connection-status.disconnected {
  background: #f8d7da;
  color: #721c24;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.connection-status.connected .status-indicator {
  background: #28a745;
}

.connection-status.disconnected .status-indicator {
  background: #dc3545;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.class-select {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
}

.class-select span {
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 12px;
}

.class-select select {
  padding: 8px 12px;
  border: 1px solid var(--lines);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  background: white;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.zoom-controls {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  padding: 6px 10px;
  font-weight: 700;
}

.zoom-btn {
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 700;
  font-size: 16px;
}

.zoom-btn:hover {
  background: rgba(0, 0, 0, 0.04);
}

.zoom-value {
  min-width: 48px;
  text-align: center;
  font-size: 13px;
}

.zoom-reset {
  border: 1px solid rgba(0, 0, 0, 0.1);
  background: #fff;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 12px;
}

.zoom-reset:hover {
  background: rgba(0, 0, 0, 0.04);
}

/* Tracker Content */
.tracker-content {
  flex: 1;
  padding: 10px 14px 14px;
  overflow: auto;
}

/* Pacing Board App */
.pacing-board-app {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pacing-board-app__loading,
.pacing-board-app__empty {
  padding: 24px;
  border-radius: 16px;
  border: 1px dashed rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.9);
  text-align: center;
  font-weight: 600;
  color: var(--text-light);
}

/* Pacing Board */
.pacing-board {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 14px;
  background-color: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--lines);
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
  min-height: 320px;
  transform: scale(var(--board-zoom, 1));
  transform-origin: top left;
  width: calc(100% / var(--board-zoom, 1));
}

.pacing-board__header {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: flex-start;
  justify-content: space-between;
  margin: 2px 0;
}

.pacing-board__title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.pacing-board__title-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-light);
}

.pacing-board__title h2 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--text-main);
  line-height: 1.1;
}

.pacing-board__settings {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 2px;
}

.pacing-board__settings-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.05);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
}

.pacing-board__helper {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  padding: 6px 10px;
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
  margin: 4px 0 6px;
  line-height: 1.15;
}

.pacing-board__helper p {
  margin: 0;
  line-height: 1.15;
}

/* Legend */
.pacing-board__legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 6px 0 8px;
}

.pacing-board__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: rgba(244, 240, 232, 0.8);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-light);
}

.pacing-board__legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--status-color, var(--accent-blue));
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.12);
}

.pacing-board__legend-label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pacing-board__legend-count {
  background: rgba(255, 255, 255, 0.8);
  color: var(--text-main);
  border-radius: 999px;
  padding: 2px 6px;
  font-weight: 700;
}

/* Roadmap List */
.pacing-board__roadmap-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Roadmap Card */
.pacing-roadmap-card {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 16px;
  background: #fff;
  padding: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.pacing-roadmap-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.pacing-roadmap-card__title {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pacing-roadmap-card__eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--text-light);
}

.pacing-roadmap-card__title h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-main);
  line-height: 1.2;
}

.pacing-roadmap-card__summary {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-light);
}

/* Matrix Shell */
.pacing-board__matrix-shell {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  padding: 16px;
  overflow: auto;
}

.pacing-board__table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
}

.pacing-board__table th,
.pacing-board__table td {
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 10px;
  text-align: center;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.95);
}

.pacing-board__table thead th {
  background: rgba(11, 132, 243, 0.1);
  color: var(--text-main);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.pacing-board__student-header {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  min-width: 140px;
  background: rgba(236, 239, 241, 0.9) !important;
}

.pacing-board__tier-header {
  background: color-mix(in srgb, var(--tier-color, var(--accent-blue)) 12%, white 88%) !important;
  color: color-mix(in srgb, var(--tier-color, var(--accent-blue)) 65%, black 35%);
}

@supports not (color: color-mix(in srgb, white 50%, black 50%)) {
  .pacing-board__tier-header {
    background: rgba(11, 132, 243, 0.08) !important;
    color: #1b3f74;
  }
}

.pacing-board__table tbody th {
  background: rgba(236, 239, 241, 0.9);
  text-align: left;
  font-weight: 600;
}

.pacing-board__empty {
  padding: 18px;
  border: 1px dashed var(--lines);
  border-radius: 12px;
  text-align: center;
  color: var(--text-light);
  font-weight: 600;
  background: rgba(250, 248, 244, 0.8);
}

/* Status Button */
.pacing-board__status-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--lines);
  border-radius: 12px;
  padding: 6px 8px;
  background: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  width: max-content;
  max-width: 100%;
}

.pacing-board__status-btn.is-empty {
  background: rgba(255, 255, 255, 0.9);
  color: var(--text-light);
  font-weight: 600;
}

.pacing-board__status-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.pacing-board__status-btn.has-status {
  border-color: var(--status-color, var(--accent-blue));
  background: color-mix(in srgb, var(--status-color, var(--accent-blue)) 22%, #ffffff 78%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--status-color, var(--accent-blue)) 35%, transparent);
}

@supports not (color: color-mix(in srgb, white 50%, black 50%)) {
  .pacing-board__status-btn.has-status {
    box-shadow: 0 0 0 2px rgba(11, 132, 243, 0.18);
    background: rgba(11, 132, 243, 0.12);
  }
}

.pacing-board__status-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  flex: 1;
  text-align: left;
  font: inherit;
  color: inherit;
}

.pacing-board__status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--status-color, var(--accent-blue));
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
  flex-shrink: 0;
}

.pacing-board__status-text {
  white-space: nowrap;
  flex: 1;
}

.pacing-board__status-select {
  border: 1px solid var(--lines);
  border-radius: 8px;
  background: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  padding: 4px 6px;
  min-width: 0;
  width: max-content;
  color: var(--text-main);
  position: absolute;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  left: 0;
  top: 100%;
}

.pacing-board__status-select:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 1px;
}

.pacing-board__status-btn.is-open .pacing-board__status-select,
.pacing-board__status-select:focus {
  opacity: 1;
  pointer-events: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .tracker-toolbar {
    padding: 10px 12px;
  }

  .tracker-toolbar h1 {
    font-size: 16px;
  }

  .toolbar-controls {
    width: 100%;
    justify-content: space-between;
    margin-left: 0;
  }

  .connect-card {
    padding: 24px;
  }

  .room-code-input {
    font-size: 20px;
    padding: 14px;
  }

  .tracker-content {
    padding: 10px;
  }

  .pacing-board {
    padding: 10px 12px;
  }

  .pacing-roadmap-card {
    padding: 14px;
  }
}