:root {
    --bg: #050816;
    --bg-alt: #0b1020;
    --panel: #111827;
    --accent: #fbbf24;
    --accent-soft: rgba(251, 191, 36, 0.1);
    --text: #f9fafb;
    --text-muted: #9ca3af;
    --danger: #ef4444;
    --radius-lg: 1.25rem;
    --radius-md: 0.8rem;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.5);
  }
  
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
  
  html,
  body {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #111827, #020617);
    color: var(--text);
  }
  
  body {
    display: flex;
    align-items: stretch;
    justify-content: center;
  }
  
  .app {
    width: 100%;
    max-width: 1100px;
    margin: auto;
    padding: 1.5rem;
  }
  
  /* Screens */
  
  .screen {
    display: none;
  }
  
  .screen.active {
    display: block;
  }
  
  /* Panneau de login / cartes "panneau" */
  
  .login-panel {
    background: linear-gradient(145deg, #111827, #020617);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(148, 163, 184, 0.15);
  }
  
  .login-panel.large {
    max-width: 480px;
    margin: 6vh auto 0;
  }
  
  /* Titres / texte */
  
  h1 {
    margin: 0 0 0.6rem;
    font-size: 2.2rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
  
  h1 .accent {
    color: var(--accent);
  }
  
  .subtitle {
    margin: 0 0 1.8rem;
    color: var(--text-muted);
  }
  
  /* Forms */
  
  .form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  
  label {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.9rem;
    color: var(--text-muted);
  }
  
  input,
  select {
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    padding: 0.6rem 1rem;
    background: rgba(15, 23, 42, 0.9);
    color: var(--text);
    outline: none;
  }
  
  input:focus,
  select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-soft);
  }
  
  /* Buttons */
  
  .btn {
    border: none;
    border-radius: 999px;
    padding: 0.6rem 1.2rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease,
      opacity 0.12s ease;
  }
  
  .btn.primary {
    background: linear-gradient(135deg, #fbbf24, #f97316);
    color: #111827;
    box-shadow: 0 8px 18px rgba(251, 191, 36, 0.35);
  }
  
  .btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(251, 191, 36, 0.45);
  }
  
  .btn.secondary {
    background: rgba(15, 23, 42, 0.9);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.5);
  }
  
  .btn.secondary:hover {
    background: rgba(30, 64, 175, 0.6);
  }
  
  .btn.ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(148, 163, 184, 0.3);
  }
  
  .btn.small {
    padding: 0.35rem 0.9rem;
    font-size: 0.8rem;
  }
  
  .btn.full {
    width: 100%;
  }
  
  .btn:disabled {
    opacity: 0.45;
    cursor: default;
    transform: none;
    box-shadow: none;
  }
  
  /* Topbar / lobby */
  
  .topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
  }
  
  .brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
  }
  
  .logo {
    width: 38px;
    height: 38px;
    border-radius: 13px;
    background: radial-gradient(circle at 20% 20%, #facc15, #f97316);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #111827;
    font-size: 0.9rem;
    box-shadow: 0 12px 30px rgba(251, 191, 36, 0.5);
  }
  
  .brand-text {
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.8rem;
    color: var(--text-muted);
  }
  
  .player-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.5);
    font-size: 0.85rem;
  }
  
  .avatar {
    font-size: 1.2rem;
  }
  
  .nickname {
    font-weight: 500;
  }
  
  /* Layout lobby */
  
  .layout {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 1.5rem;
  }
  
  .panel {
    background: rgba(15, 23, 42, 0.95);
    border-radius: var(--radius-lg);
    padding: 1.3rem 1.4rem;
    border: 1px solid rgba(148, 163, 184, 0.2);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.8);
  }
  
  .panel h2,
  .panel h3 {
    margin: 0 0 0.8rem;
    font-size: 1.1rem;
  }
  
  /* Room list */
  
  .room-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    max-height: 350px;
    overflow-y: auto;
  }
  
  .room-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.9rem;
    border-radius: var(--radius-md);
    background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.22), transparent 60%),
      rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(148, 163, 184, 0.4);
  }
  
  .room-main {
    display: flex;
    flex-direction: column;
  }
  
  .room-name {
    font-weight: 500;
    margin-bottom: 0.15rem;
  }
  
  .room-info {
    font-size: 0.8rem;
    color: var(--text-muted);
  }
  
  /* Badges */
  
  .badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.1rem 0.6rem;
    font-size: 0.75rem;
    background: rgba(34, 197, 94, 0.13);
    border: 1px solid rgba(34, 197, 94, 0.5);
    color: #bbf7d0;
  }
  
  .badge.danger {
    background: rgba(239, 68, 68, 0.13);
    border-color: rgba(239, 68, 68, 0.6);
    color: #fecaca;
  }
  
  /* Toast */
  
  .toast {
    position: fixed;
    bottom: 1.4rem;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    background: #020617;
    color: var(--text);
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.6);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    font-size: 0.9rem;
  }
  
  .toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  
  /* Room screen */
  
  .room-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }
  
  .room-layout {
    display: grid;
    grid-template-columns: 2.2fr 3fr;
    gap: 1.5rem;
  }
  
  .player-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .player-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-md);
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(148, 163, 184, 0.4);
  }
  
  /* Text utils */
  
  .muted {
    color: var(--text-muted);
    font-size: 0.85rem;
  }
  
  .small {
    font-size: 0.75rem;
  }
  
  /* Responsive */
  
  @media (max-width: 900px) {
    .layout,
    .room-layout {
      grid-template-columns: 1fr;
    }
  
    .login-panel.large {
      margin-top: 3vh;
    }
  }
  
  @media (max-width: 600px) {
    .app {
      padding: 1rem;
    }
  
    .panel {
      padding: 1rem;
    }
  
    h1 {
      font-size: 1.7rem;
    }
  }
  
  /* Zone de jeu : lignes et main */
  
  .rows {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1rem;
  }
  
  .row {
    background: rgba(15, 23, 42, 0.9);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.7rem;
    border: 1px solid rgba(148, 163, 184, 0.35);
  }
  
  .row-header {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
  }
  
  .row-cards {
    display: flex;
    gap: 0.3rem;
    flex-wrap: wrap;
  }
  
  .hand {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
  }
  
  /* Cartes du jeu */
  
  .card {
    width: 60px;
    height: 100px;
    border-radius: 0.8rem;
    padding: 0.35rem 0.4rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
  
    background: #020617;
    border: 2px solid rgba(148, 163, 184, 0.6);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
  
    font-size: 0.9rem;
  }
  
  .card-number {
    align-self: flex-start;
    font-weight: 600;
    font-size: 0.9rem;
  }
  
  .card-bulls {
    font-size: 0.8rem;
  }
  
  .hand-card {
    cursor: pointer;
    transition:
      transform 0.12s ease,
      box-shadow 0.12s ease,
      border-color 0.12s ease,
      filter 0.12s ease;
  }
  
  /* Hover simple quand pas sélectionnée */
  .hand-card:hover:not(.selected) {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.7);
  }
  
  /* Carte sélectionnée : bien mise en avant */
  .hand-card.selected {
    position: relative;
    transform: translateY(-6px) scale(1.08);
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-soft), 0 18px 40px rgba(251, 191, 36, 0.5);
    filter: brightness(1.1);
  }
  
  /* Petit badge "Choisie" en haut */
  .hand-card.selected::after {
    content: "Choisie";
    position: absolute;
    top: -10px;
    right: -6px;
    padding: 0.1rem 0.4rem;
    font-size: 0.6rem;
    border-radius: 999px;
    background: var(--accent);
    color: #111827;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
  }
  
  
  /* Couleurs selon le nombre de têtes de bœuf */
  
  .card.bull-1 {
    background: radial-gradient(circle at top, #1e293b, #020617);
    border-color: rgba(148, 163, 184, 0.7);
  }
  
  .card.bull-2 {
    background: radial-gradient(circle at top, #0f766e, #022c22);
    border-color: rgba(45, 212, 191, 0.9);
  }
  
  .card.bull-3 {
    background: radial-gradient(circle at top, #1d4ed8, #020617);
    border-color: rgba(129, 140, 248, 0.9);
  }
  
  .card.bull-5 {
    background: radial-gradient(circle at top, #7c3aed, #1e1b4b);
    border-color: rgba(167, 139, 250, 0.95);
  }
  
  .card.bull-7 {
    background: radial-gradient(circle at top, #b91c1c, #111827);
    border-color: rgba(248, 113, 113, 0.95);
  }