:root {
  /* Palette Airbus ECAM Display */
  --bg-color: #000000;
  --card-bg: #000000;
  --text-color: #ffffff;
  --border-color: #ffffff;
  --blue-title: #00dcf1;

  /* Couleurs ECAM Fixes */
  --ecam-orange: #ff9900;   /* Chargement / Reconnexion */
  --ecam-green: #00E600;  /* Diffusion active */
  --ecam-red: #ff0000;    /* Indisponibilité / INOP */
  --press-gray: #919191;  /* Couleur d'appui actif */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

body {
  padding: 0.6rem;
  padding-top: max(0.6rem, env(safe-area-inset-top));
  padding-right: max(0.6rem, env(safe-area-inset-right));
  padding-bottom: max(0.6rem, env(safe-area-inset-bottom));
  padding-left: max(0.6rem, env(safe-area-inset-left));
}

.app-container {
  width: 100%;
}

/* Navigation Header */
.nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  width: 100%;
}

.btn-back {
  background-color: #000000;
  border: 0.5px solid #ffffff; /* Bordure ultra-fine au repos */
  color: var(--blue-title);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  transition: background-color 0.1s ease, border-color 0.1s ease, color 0.1s ease;
  outline: none;
}

.category-title {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--blue-title);
  text-transform: uppercase;
}

.radio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.5rem;
  width: 100%;
}

.radio-card {
  background-color: #303030;
  border-radius: 6px;
  min-height: 75px;
  padding: 0.4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 0.1s ease, border-color 0.1s ease, color 0.1s ease, transform 0.1s ease;
  border: 0.5px solid #ffffff; /* Bordure blanche très fine au repos */
  color: #ffffff;
  text-align: center;
  outline: none;
}

/* Survol appliqué uniquement sur les appareils avec pointeur */
@media (hover: hover) {
  .radio-card:hover {
    background-color: #111111;
  }
  .btn-back:hover {
    background-color: #111111;
  }
}

/* Effet d'appui dynamique (Gray #919191) */
.radio-card:active,
.btn-back:active {
  background-color: var(--press-gray) !important;
  border-color: var(--border-color) !important;
  color: #000000 !important;
  transform: scale(0.96);
}

/* Card Catégorie */
.radio-card.category-card {
  border-color: #ffffff;
}

/* States ECAM : Épaisseur de la bordure à 5px lors de la sélection */
.radio-card.loading {
  background-color: #000000 !important;
  border-color: var(--ecam-orange) !important;
  color: var(--ecam-orange) !important;
  border-width: 5px !important;
}

.radio-card.playing {
  background-color: #000000 !important;
  border-color: var(--ecam-green) !important;
  color: var(--ecam-green) !important;
  border-width: 5px !important;
}

.radio-card.error,
.radio-card.inop {
  background-color: #000000 !important;
  border-color: var(--ecam-red) !important;
  color: var(--ecam-red) !important;
  border-width: 5px !important;
}

/* Nom de la radio : 1rem au repos avec affichage sur 2 lignes max */
.radio-name {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  word-break: normal;
  overflow-wrap: break-word;
  white-space: pre-line;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Lors de la sélection : ajustement à 1rem et graisse maximale (900) */
.radio-card.loading .radio-name,
.radio-card.playing .radio-name,
.radio-card.error .radio-name,
.radio-card.inop .radio-name {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.01em;
}

/* Badge INOP Airbus ECAM */
.inop-badge {
  display: none;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--ecam-red);
  margin-top: 0.25rem;
  letter-spacing: 0.08em;
}

.radio-card.inop .inop-badge,
.radio-card.error .inop-badge {
  display: block;
}

.radio-card:active .inop-badge {
  color: #000000 !important;
}

.error-msg {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--ecam-red);
  font-weight: 600;
}