/* Variables CSS */
:root {
  --color-fons: #121213;
  --color-text: #ffffff;
  --color-text-secundari: #818384;
  --color-vora: #3a3a3c;
  --color-correcte: #538d4e;
  --color-present: #b59f3b;
  --color-absent: #3a3a3c;
  --color-tecla: #818384;
  --color-tecla-text: #ffffff;
  --color-accent: #538d4e;
  --max-amplada: 500px;
  --casella-mida: 62px;
  --casella-gap: 5px;
}

/* 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: 10px 0;
  border-bottom: 1px solid var(--color-vora);
  position: relative;
}

header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.05rem;
  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: 6px;
  padding: 8px 0;
}

.mode-btn {
  background: transparent;
  border: 1px solid var(--color-vora);
  color: var(--color-text);
  padding: 6px 14px;
  border-radius: 16px;
  cursor: pointer;
  font-size: 0.8rem;
  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);
}

/* Opcions mode lliure - compacte en línia */
.opcions-lliure {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 4px 0 8px;
}

.longitud-selector {
  display: flex;
  gap: 4px;
}

.longitud-btn {
  background: transparent;
  border: 1px solid var(--color-vora);
  color: var(--color-text);
  width: 32px;
  height: 32px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.nova-partida-btn {
  background: var(--color-vora);
  border: none;
  color: var(--color-text);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  transition: opacity 0.2s;
}

.nova-partida-btn:hover {
  background: var(--color-text-secundari);
}

.hidden {
  display: none !important;
}

/* Tauler */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 8px 0;
  gap: 8px;
}

.tauler {
  display: flex;
  flex-direction: column;
  gap: var(--casella-gap);
}

.fila {
  display: flex;
  gap: var(--casella-gap);
}

.casella {
  width: var(--casella-mida);
  height: var(--casella-mida);
  border: 2px solid var(--color-vora);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  background: transparent;
  transition: transform 0.1s;
}

.casella.plena {
  border-color: var(--color-text-secundari);
  animation: pop 0.1s;
}

.casella.revelada {
  animation: flip 0.5s ease forwards;
}

.casella.correcte {
  background-color: var(--color-correcte);
  border-color: var(--color-correcte);
}

.casella.present {
  background-color: var(--color-present);
  border-color: var(--color-present);
}

.casella.absent {
  background-color: var(--color-absent);
  border-color: var(--color-absent);
}

/* Animacions */
@keyframes pop {
  50% {
    transform: scale(1.1);
  }
}

@keyframes flip {
  0% {
    transform: rotateX(0);
  }
  50% {
    transform: rotateX(90deg);
  }
  100% {
    transform: rotateX(0);
  }
}

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

@keyframes bounce {
  0%, 20% { transform: translateY(0); }
  40% { transform: translateY(-30px); }
  50% { transform: translateY(5px); }
  60% { transform: translateY(-15px); }
  80% { transform: translateY(2px); }
  100% { transform: translateY(0); }
}

.shake {
  animation: shake 0.5s ease;
}

.bounce {
  animation: bounce 1s ease;
}

/* Missatge */
.missatge {
  background: var(--color-text);
  color: var(--color-fons);
  padding: 12px 24px;
  border-radius: 4px;
  font-weight: 600;
  margin-bottom: 16px;
}

/* Teclat */
.teclat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: 500px;
  margin-top: auto;
  padding-bottom: 8px;
}

.fila-teclat {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.tecla {
  background: var(--color-tecla);
  border: none;
  color: var(--color-tecla-text);
  padding: 0;
  height: 58px;
  min-width: 32px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  flex: 1;
  max-width: 43px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.1s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.tecla:hover {
  opacity: 0.9;
}

.tecla:active {
  transform: scale(0.95);
}

.tecla-enter,
.tecla-backspace {
  flex: 1.5;
  max-width: 65px;
  font-size: 0.75rem;
}

.tecla.correcte {
  background-color: var(--color-correcte);
}

.tecla.present {
  background-color: var(--color-present);
}

.tecla.absent {
  background-color: var(--color-absent);
}

/* 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 p {
  margin-bottom: 12px;
  line-height: 1.5;
}

/* Exemples ajuda */
.exemple {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin: 12px 0;
}

.exemple .casella {
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
}

/* 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 h3 {
  margin-bottom: 12px;
}

.distribucio {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.distribucio-fila {
  display: flex;
  align-items: center;
  gap: 8px;
}

.distribucio-fila .numero {
  width: 12px;
  font-size: 0.9rem;
}

.distribucio-fila .barra {
  background: var(--color-vora);
  height: 20px;
  min-width: 8px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 8px;
  font-size: 0.85rem;
  font-weight: 700;
}

.distribucio-fila .barra.destacada {
  background: var(--color-correcte);
}

/* Modal final */
.info-paraula {
  text-align: center;
  margin-bottom: 20px;
}

.paraula-correcta {
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.definicio {
  color: var(--color-text-secundari);
  font-style: italic;
}

.compartir-btn {
  width: 100%;
  background: var(--color-correcte);
  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-correcte);
  font-weight: 600;
}

/* Responsive */
@media (max-width: 420px) {
  :root {
    --casella-mida: 54px;
  }

  header {
    padding: 8px 0;
  }

  header h1 {
    font-size: 1.4rem;
  }

  .mode-selector {
    padding: 6px 0;
  }

  .mode-btn {
    padding: 5px 10px;
    font-size: 0.75rem;
  }

  .tecla {
    height: 52px;
    font-size: 0.8rem;
  }

  .tecla-enter,
  .tecla-backspace {
    font-size: 0.65rem;
  }

  main {
    padding: 8px 0;
  }

  .tauler {
    margin-bottom: 12px;
  }
}

@media (max-width: 360px) {
  :root {
    --casella-mida: 48px;
  }

  header h1 {
    font-size: 1.2rem;
  }

  .tecla {
    height: 48px;
    min-width: 28px;
  }

  .tecla-enter,
  .tecla-backspace {
    max-width: 55px;
  }
}

@media (max-width: 320px) {
  :root {
    --casella-mida: 42px;
  }

  .casella {
    font-size: 1.6rem;
  }

  .tecla {
    height: 44px;
    min-width: 24px;
    font-size: 0.7rem;
  }
}

/* Ajust per paraules més llargues */
.tauler.longitud-6 .casella {
  width: calc(var(--casella-mida) * 0.85);
  height: calc(var(--casella-mida) * 0.85);
  font-size: 1.7rem;
}

.tauler.longitud-7 .casella {
  width: calc(var(--casella-mida) * 0.75);
  height: calc(var(--casella-mida) * 0.75);
  font-size: 1.5rem;
}