/* ==========================================================================
   Joc interactiu de càlcul de volums per a 2n d'FP Bàsica
   Estils generals, components visuals i mecànica d'interacció 3D/isomètrica
   Institut Pere Borrell · Ciències Aplicades II · Curs 2026-2027
   ========================================================================== */

:root {
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --secondary: #d97706;
  --secondary-light: #fef3c7;
  --accent: #10b981;
  --accent-light: #d1fae5;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #cbd5e1;
  --text-main: #0f172a;
  --text-muted: #475569;
  --canvas-bg: #f1f5f9;
  --canvas-grid: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --bg-page: #0b1120;
  --bg-card: #1e293b;
  --border-color: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary-light: #0c4a6e;
  --secondary-light: #78350f;
  --accent-light: #064e3b;
  --danger-light: #7f1d1d;
  --canvas-bg: #0f172a;
  --canvas-grid: #1e293b;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Enllaç ràpid d'accessibilitat */
.skip-link {
  position: absolute;
  top: -40px;
  left: 10px;
  background: var(--primary);
  color: #fff;
  padding: 8px 12px;
  z-index: 1000;
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 0.2s;
}

.skip-link:focus {
  top: 10px;
}

/* Capçalera principal */
header.game-header {
  background: var(--bg-card);
  border-bottom: 2px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin: 0;
}

h1.game-title {
  font-size: 1.75rem;
  margin: 0.25rem 0 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  color: var(--text-main);
}

.badge-course {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.game-intro {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 950px;
}

/* Botó estàndard de retorn */
.btn-return-course {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  transition: background 0.15s, transform 0.15s;
}

.btn-return-course:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

/* Barra d'estat del joc */
.game-status-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.levels-nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.level-btn {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s;
}

.level-btn:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.level-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary-hover);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.level-btn.completed {
  border-color: var(--accent);
}

.level-btn.completed::after {
  content: '✓';
  color: var(--accent);
  font-weight: 900;
  font-size: 0.85rem;
}

.level-btn.active.completed::after {
  color: #ffffff;
}

.score-panel {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.score-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.score-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
}

.score-value {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.quick-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-action {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: background 0.15s, border-color 0.15s;
}

.btn-action:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-action-pdf {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #b91c1c;
}

.btn-action-pdf:hover {
  background: #fecaca;
  color: #991b1b;
}

/* Contenidor principal del joc */
.game-container {
  max-width: 1400px;
  margin: 1.5rem auto;
  padding: 0 1.25rem;
}

.challenge-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .challenge-grid {
    grid-template-columns: 1fr;
  }
}

/* Targetes de contingut */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0 0 1rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
}

/* Escenari visual SVG */
.visual-canvas-container {
  width: 100%;
  height: 400px;
  background: var(--canvas-bg);
  border: 2px dashed var(--canvas-grid);
  border-radius: var(--radius-md);
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-canvas-container svg {
  width: 100%;
  height: 100%;
  user-select: none;
}

/* Paleta de manipulació i controls interactius */
.palette-container {
  margin-top: 1rem;
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.palette-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.palette-items {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.interactive-control-btn {
  background: var(--bg-card);
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  transition: all 0.2s;
}

.interactive-control-btn:hover:not(:disabled) {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.interactive-control-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--border-color);
  color: var(--text-muted);
}

/* Tauler matemàtic */
.math-board {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.step-card {
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
}

.step-card.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

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

.step-num {
  background: var(--primary);
  color: #ffffff;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.step-title {
  font-weight: 700;
  font-size: 0.95rem;
}

.formula-display {
  background: var(--bg-card);
  border-left: 3px solid var(--primary);
  padding: 0.6rem 0.85rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 0.5rem 0;
  font-size: 0.9rem;
  overflow-x: auto;
}

.math-input-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.math-input-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.math-input {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.65rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  width: 140px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.math-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.math-input.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-light);
}

.math-unit {
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.btn-validate-math {
  background: var(--primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: background 0.15s, transform 0.15s;
}

.btn-validate-math:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

/* Feedback educatiu */
.feedback-box {
  display: none;
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.feedback-box.show {
  display: block;
}

.feedback-box.success {
  background: var(--accent-light);
  color: #065f46;
  border: 1px solid #6ee7b7;
}

[data-theme="dark"] .feedback-box.success {
  color: #a7f3d0;
  border-color: #047857;
}

.feedback-box.error {
  background: var(--danger-light);
  color: #991b1b;
  border: 1px solid #fca5a5;
}

[data-theme="dark"] .feedback-box.error {
  color: #fecaca;
  border-color: #b91c1c;
}

.feedback-box.warning {
  background: var(--secondary-light);
  color: #92400e;
  border: 1px solid #fcd34d;
}

[data-theme="dark"] .feedback-box.warning {
  color: #fde68a;
  border-color: #b45309;
}

/* Botó de següent nivell */
.btn-next-level {
  display: none;
  width: 100%;
  background: var(--accent);
  color: #ffffff;
  border: none;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
  transition: filter 0.15s, transform 0.15s;
}

.btn-next-level:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.btn-next-level.show {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Modal de formulari ràpid */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 780px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-close:hover {
  color: var(--text-main);
}

/* Banner de fitxes i recursos */
.worksheets-banner {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.08), rgba(16, 185, 129, 0.08));
  border: 1px solid rgba(2, 132, 199, 0.25);
  border-left: 5px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.worksheets-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-worksheet {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.88rem;
  transition: all 0.2s;
}

.btn-worksheet-view {
  background: var(--primary);
  color: #ffffff;
}

.btn-worksheet-view:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-worksheet-pdf {
  background: #ef4444;
  color: #ffffff;
}

.btn-worksheet-pdf:hover {
  background: #dc2626;
  transform: translateY(-1px);
}

/* Impressió */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .game-status-bar,
  .quick-actions,
  .btn-action,
  .btn-validate-math,
  .btn-next-level,
  .palette-container,
  .skip-link {
    display: none !important;
  }
  .card {
    border: 1px solid #000000;
    box-shadow: none;
    page-break-inside: avoid;
  }
}