/* Variables CSS */
:root {
  --color-fons: #121213;
  --color-text: #ffffff;
  --color-text-secundari: #818384;
  --color-vora: #3a3a3c;
  --color-paraula: #5a5a5c;
  --color-paraula-hover: #6a6a6c;
  --color-paraula-seleccionada: #a0a0a2;
  --color-nivell-1: #f9df6d;  /* Groc - Fàcil */
  --color-nivell-2: #a0c35a;  /* Verd - Mitjà */
  --color-nivell-3: #b0c4ef;  /* Blau - Difícil */
  --color-nivell-4: #ba81c5;  /* Morat - Molt difícil */
  --color-accent: #538d4e;
  --color-error: #c9534a;
  --max-amplada: 500px;
}

/* Reset i base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Clear Sans', 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--color-fons);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: var(--max-amplada);
  padding: 0 8px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Capçalera */
header {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-vora);
  position: relative;
}

header h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
}

.header-buttons {
  position: absolute;
  right: 0;
  display: flex;
  gap: 8px;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--color-text);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.icon-btn:hover {
  background-color: var(--color-vora);
}

/* Selector de mode */
.mode-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 16px 0;
}

.mode-btn {
  background: transparent;
  border: 2px solid var(--color-vora);
  color: var(--color-text);
  padding: 10px 20px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}

.mode-btn:hover {
  border-color: var(--color-text-secundari);
}

.mode-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.hidden {
  display: none !important;
}

/* Main */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
  gap: 16px;
}

/* Grups resolts */
.grups-resolts {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.grup-resolt {
  padding: 16px;
  border-radius: 8px;
  text-align: center;
  animation: revelar 0.5s ease;
}

.grup-resolt.nivell-1 { background-color: var(--color-nivell-1); color: #000; }
.grup-resolt.nivell-2 { background-color: var(--color-nivell-2); color: #000; }
.grup-resolt.nivell-3 { background-color: var(--color-nivell-3); color: #000; }
.grup-resolt.nivell-4 { background-color: var(--color-nivell-4); color: #000; }

.grup-resolt .nom-categoria {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
  text-transform: uppercase;
}

.grup-resolt .paraules-categoria {
  font-size: 0.9rem;
}

@keyframes revelar {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Graella de paraules */
.graella {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
}

.paraula {
  background-color: var(--color-paraula);
  border: none;
  border-radius: 8px;
  padding: 20px 8px;
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
  word-break: break-word;
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.paraula:hover {
  background-color: var(--color-paraula-hover);
}

.paraula.seleccionada {
  background-color: var(--color-paraula-seleccionada);
  color: #000;
  transform: scale(1.02);
}

.paraula.incorrecta {
  animation: shake 0.5s ease;
}

.paraula.quasi {
  animation: pulse 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Intents */
.intents {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-secundari);
  font-size: 0.9rem;
}

.punts {
  display: flex;
  gap: 6px;
}

.punt {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--color-vora);
  transition: background-color 0.3s;
}

.punt.actiu {
  background-color: var(--color-text);
}

.punt.perdut {
  background-color: var(--color-error);
}

/* Missatge */
.missatge {
  background: var(--color-text);
  color: var(--color-fons);
  padding: 12px 24px;
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
}

.missatge.error {
  background: var(--color-error);
  color: var(--color-text);
}

/* Botons d'acció */
.accions {
  display: flex;
  gap: 8px;
  width: 100%;
  justify-content: center;
}

.accio-btn {
  background: transparent;
  border: 1px solid var(--color-vora);
  color: var(--color-text);
  padding: 12px 24px;
  border-radius: 24px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.2s;
}

.accio-btn:hover:not(:disabled) {
  background-color: var(--color-vora);
}

.accio-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.accio-btn.btn-primari {
  background: var(--color-text);
  color: var(--color-fons);
  border-color: var(--color-text);
}

.accio-btn.btn-primari:hover:not(:disabled) {
  opacity: 0.9;
}

.accio-btn.btn-primari:disabled {
  background: var(--color-vora);
  border-color: var(--color-vora);
  color: var(--color-text-secundari);
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100;
}

.modal-content {
  background: var(--color-fons);
  border: 1px solid var(--color-vora);
  border-radius: 8px;
  padding: 24px;
  max-width: 90%;
  width: 400px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal h2 {
  text-align: center;
  margin-bottom: 16px;
}

.modal h3 {
  margin-top: 16px;
  margin-bottom: 8px;
}

.modal p {
  margin-bottom: 12px;
  line-height: 1.5;
}

.modal ul {
  margin-left: 20px;
  margin-bottom: 12px;
}

.modal li {
  margin-bottom: 4px;
}

/* Exemple colors ajuda */
.exemple-colors {
  display: flex;
  gap: 4px;
  margin: 12px 0;
}

.exemple-color {
  flex: 1;
  padding: 8px 4px;
  border-radius: 4px;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: #000;
}

.exemple-color.nivell-1 { background-color: var(--color-nivell-1); }
.exemple-color.nivell-2 { background-color: var(--color-nivell-2); }
.exemple-color.nivell-3 { background-color: var(--color-nivell-3); }
.exemple-color.nivell-4 { background-color: var(--color-nivell-4); }

/* Estadístiques */
.estadistiques-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 24px;
}

.estadistica {
  text-align: center;
}

.estadistica .valor {
  font-size: 2rem;
  font-weight: 700;
}

.estadistica .etiqueta {
  font-size: 0.75rem;
  color: var(--color-text-secundari);
}

/* Modal final - Resum */
.resum-grups {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.resum-grup {
  padding: 12px;
  border-radius: 6px;
  text-align: center;
  color: #000;
}

.resum-grup.nivell-1 { background-color: var(--color-nivell-1); }
.resum-grup.nivell-2 { background-color: var(--color-nivell-2); }
.resum-grup.nivell-3 { background-color: var(--color-nivell-3); }
.resum-grup.nivell-4 { background-color: var(--color-nivell-4); }

.resum-grup .nom {
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 2px;
}

.resum-grup .paraules {
  font-size: 0.8rem;
}

/* Compartir */
.compartir-btn {
  width: 100%;
  background: var(--color-accent);
  border: none;
  color: var(--color-text);
  padding: 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 700;
  transition: opacity 0.2s;
}

.compartir-btn:hover {
  opacity: 0.9;
}

.missatge-compartir {
  text-align: center;
  margin-top: 12px;
  color: var(--color-accent);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 400px) {
  header h1 {
    font-size: 1.5rem;
  }

  .paraula {
    padding: 16px 4px;
    font-size: 0.75rem;
    min-height: 50px;
  }

  .accio-btn {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .mode-btn {
    padding: 8px 14px;
    font-size: 0.8rem;
  }
}