:root {
  --color-fons: #fbfcff;
  --color-primari: #1a73e8;
  --color-secundari: #34a853;
  --color-perill: #ea4335;
  --color-impostor: #d93025;
  --color-innocent: #1e8e3e;
  --color-text: #202124;
  --color-text-suau: #5f6368;
  --color-borde: #dadce0;
  --color-focus: #8ab4f8;
  --ombra-suau: 0 2px 12px rgba(0,0,0,0.08);
  --radi-cantonades: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background-color: var(--color-fons);
  color: var(--color-text);
  line-height: 1.5;
  padding: 16px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 500px;
  margin: 0 auto;
  width: 100%;
}

.screen { 
  display: none; 
  flex-direction: column;
  animation: fadeIn 0.4s ease;
}
.active { display: flex; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

header {
  text-align: center;
  margin-bottom: 24px;
}
h1 {
  font-size: 2.2em;
  font-weight: 800;
  color: var(--color-primari);
  margin: 16px 0;
}
h2 {
  font-size: 1.5em;
  font-weight: 700;
  margin: 20px 0 12px;
}
p {
  font-size: 1.15em;
  color: var(--color-text-suau);
  margin: 12px 0;
}

.card {
  background: white;
  border-radius: var(--radi-cantonades);
  padding: 24px;
  margin: 16px 0;
  box-shadow: var(--ombra-suau);
  text-align: center;
}

input, select {
  width: 100%;
  padding: 16px;
  font-size: 1.1em;
  border: 1px solid var(--color-borde);
  border-radius: var(--radi-cantonades);
  margin: 10px 0;
  background: white;
  transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus, select:focus {
  outline: none;
  border-color: var(--color-focus);
  box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

button {
  width: 100%;
  padding: 16px;
  font-size: 1.2em;
  font-weight: 600;
  border: none;
  border-radius: var(--radi-cantonades);
  cursor: pointer;
  margin: 12px 0;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(26, 115, 232, 0.25);
}

button:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary { background: var(--color-primari); color: white; }
.btn-success { background: var(--color-secundari); color: white; }
.btn-outline { background: transparent; border: 2px solid var(--color-primari); color: var(--color-primari); }
.btn-lg { padding: 18px; font-size: 1.3em; }

/* Pantalla de rols */
#instruccio {
  font-size: 1.4em;
  font-weight: 700;
  color: #e67e22;
  margin: 24px 0;
  padding: 20px;
  background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
  border-radius: var(--radi-cantonades);
  border-left: 4px solid #ffc107;
  animation: pulse 2s infinite;
}
@keyframes pulse { 0% { transform: scale(1); } 50% { transform: scale(1.01); } 100% { transform: scale(1); } }

#rolInfo {
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px 20px;
  font-size: 1.8em;
  font-weight: bold;
  border-radius: var(--radi-cantonades);
  margin: 24px 0;
  text-align: center;
  word-break: break-word;
  opacity: 0;
  transform: scale(0.95);
  transition: all 0.3s ease;
}
#rolInfo.mostrat {
  opacity: 1;
  transform: scale(1);
}

.rol-impostor {
  background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
  color: var(--color-impostor);
  border: 2px dashed var(--color-impostor);
}

.rol-innocent {
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  color: var(--color-innocent);
  border: 2px dashed var(--color-innocent);
}

/* Botons mutuament exclusius */
.btn-group {
  position: relative;
  height: 70px;
}
.btn-fade {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.btn-fade.actiu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.btn-fade.amagant {
  opacity: 0;
  transform: translateY(10px);
}

.icon {
  font-size: 2.5em;
  margin-bottom: 16px;
  color: var(--color-primari);
}

/* Final */
.final {
  text-align: center;
  padding: 30px 20px;
}
.final h2 {
  color: var(--color-secundari);
  font-size: 1.8em;
}
.final p {
  font-size: 1.3em;
  margin: 20px 0;
  color: var(--color-text);
}

#pantallaGuia .card p {
  margin: 12px 0;
  font-size: 1.05em;
}

footer {
  margin-top: auto;
  text-align: center;
  padding: 20px 0 10px;
  font-size: 0.85em;
  color: var(--color-text-suau);
}
a { color: var(--color-primari); text-decoration: none; }
a:hover { text-decoration: underline; }

@media (max-width: 400px) {
  h1 { font-size: 1.8em; }
  button { padding: 14px; font-size: 1.15em; }
}

@media (max-height: 600px) {
  footer {
    display: none;
  }
}