:root {
  --bg-color: #03001e;
  --bg-gradient: linear-gradient(135deg, #03001e 0%, #300652 50%, #0d0124 100%);
  --space-dark: #070312;
  --primary: #00f2fe;
  --primary-glow: rgba(0, 242, 254, 0.4);
  --secondary: #fe00a5;
  --secondary-glow: rgba(254, 0, 165, 0.4);
  --accent-gold: #ffe600;
  --accent-gold-glow: rgba(255, 230, 0, 0.4);
  --success: #39ff14;
  --success-glow: rgba(57, 255, 20, 0.4);
  --danger: #ff3366;
  --white: #ffffff;
  --text-muted: #a5a1c0;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-hover: rgba(0, 242, 254, 0.4);
  --font-heading: 'Orbitron', 'Arial Black', sans-serif;
  --font-ui: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-ui);
  background-color: var(--space-dark);
  color: var(--white);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  padding-bottom: 60px;
}

/* Fundo Espacial com Estrelas Animadas */
#stars-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(circle at 50% 20%, #1a0833 0%, #06020f 85%);
}

.star {
  position: absolute;
  background-color: #fff;
  border-radius: 50%;
  animation: float-star linear infinite;
}

@keyframes float-star {
  from { transform: translateY(-10px); }
  to { transform: translateY(100vh); }
}

/* Layout Principal */
.app-container {
  position: relative;
  z-index: 10;
  width: 95vw;
  max-width: 1240px;
  margin: 30px auto;
  background: rgba(13, 7, 30, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 50px rgba(115, 3, 192, 0.15);
  padding: 35px 40px;
  display: flex;
  flex-direction: column;
  gap: 30px;
}

/* Barra Superior de Navegação */
.top-navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--glass-border);
}

.nav-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--white);
  padding: 10px 18px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s ease;
}

.nav-back-btn:hover {
  background: rgba(0, 242, 254, 0.15);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateX(-4px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-teacher {
  background: linear-gradient(135deg, rgba(254, 0, 165, 0.25) 0%, rgba(115, 3, 192, 0.3) 100%);
  border: 1px solid rgba(254, 0, 165, 0.5);
  color: #ff9ee2;
  padding: 10px 20px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.btn-teacher:hover {
  background: linear-gradient(135deg, rgba(254, 0, 165, 0.4) 0%, rgba(115, 3, 192, 0.5) 100%);
  box-shadow: 0 0 20px var(--secondary-glow);
  transform: translateY(-2px);
  color: #fff;
}

/* Cabeçalho do Arcade */
.arcade-header {
  text-align: center;
  padding: 10px 0 15px 0;
}

.arcade-brand {
  display: inline-flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 12px;
}

.arcade-logo-icon {
  font-size: 3.2rem;
  filter: drop-shadow(0 0 18px var(--primary-glow));
  animation: pulse-icon 2.5s infinite alternate ease-in-out;
}

@keyframes pulse-icon {
  0% { transform: scale(1) rotate(-3deg); }
  100% { transform: scale(1.1) rotate(3deg); }
}

.arcade-header h1 {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: 3px;
  background: linear-gradient(to right, var(--primary), #ffffff 50%, var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: uppercase;
}

.arcade-header p {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 650px;
  margin: 0 auto;
}

/* Painel de Controle: Busca e Filtros */
.controls-bar {
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  padding: 20px 24px;
  border-radius: 20px;
}

.search-row {
  display: flex;
  align-items: center;
  gap: 15px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  position: relative;
  min-width: 260px;
}

.search-box input {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--glass-border);
  padding: 14px 20px 14px 48px;
  border-radius: 14px;
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: all 0.25s ease;
}

.search-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
  background: rgba(0, 0, 0, 0.6);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--text-muted);
  pointer-events: none;
}

.games-counter-pill {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--primary);
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
}

/* Categorias / Tags */
.category-filters {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.cat-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cat-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.cat-btn.active {
  background: linear-gradient(135deg, var(--primary) 0%, #00a8ff 100%);
  color: #03001e;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 4px 15px var(--primary-glow);
}

/* Modo Professor Ativo Banner */
.teacher-mode-banner {
  display: none;
  background: rgba(254, 0, 165, 0.15);
  border: 1px dashed var(--secondary);
  border-radius: 14px;
  padding: 12px 20px;
  align-items: center;
  justify-content: space-between;
  color: #ffbfe8;
  font-size: 0.9rem;
}

.teacher-mode-banner.active {
  display: flex;
}

.btn-add-game-fast {
  background: var(--secondary);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Grade de Jogos */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  min-height: 200px;
}

/* Card de Jogo */
.game-card {
  position: relative;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.game-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 15px 35px rgba(0, 242, 254, 0.25);
  background: rgba(255, 255, 255, 0.04);
}

.game-card-thumbnail {
  width: 100%;
  height: 155px;
  border-radius: 14px;
  overflow: hidden;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.game-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.game-card:hover .game-card-thumbnail img {
  transform: scale(1.06);
}

.game-card-thumb-icon {
  font-size: 4rem;
  filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.3));
}

.badge-category {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(10, 5, 25, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.game-card-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.3;
}

.game-card-info p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.45;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.game-card-actions {
  display: flex;
  gap: 10px;
  margin-top: auto;
}

.btn-play-game {
  flex: 1;
  background: linear-gradient(135deg, var(--primary) 0%, #0099ff 100%);
  color: #04091a;
  border: none;
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-play-game:hover {
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.6);
  transform: translateY(-2px);
  color: #000;
}

.btn-delete-game {
  display: none;
  background: rgba(255, 51, 102, 0.15);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 0 14px;
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.2s ease;
}

.btn-delete-game:hover {
  background: var(--danger);
  color: #fff;
}

/* Quando o Modo Professor está ativo, mostra o botão de excluir */
.teacher-mode .btn-delete-game {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Estado Vazio */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 15px;
  opacity: 0.6;
}

/* Modais (Formulário do Professor e Launcher) */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 2, 12, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #110924;
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  width: 100%;
  max-width: 600px;
  padding: 30px 35px;
  position: relative;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.8), 0 0 40px rgba(254, 0, 165, 0.2);
  animation: modal-enter 0.3s ease-out;
}

@keyframes modal-enter {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}

.modal-header h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.modal-close-btn:hover {
  background: var(--danger);
  border-color: var(--danger);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: #d1cbe5;
  margin-bottom: 7px;
}

.input-with-action {
  display: flex;
  gap: 8px;
}

.form-input {
  width: 100%;
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--glass-border);
  padding: 12px 16px;
  border-radius: 12px;
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.25s;
}

.form-input:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 15px var(--secondary-glow);
}

.btn-action-small {
  background: rgba(0, 242, 254, 0.15);
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 0 16px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}

.btn-action-small:hover {
  background: var(--primary);
  color: #000;
}

.icon-selector-grid {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.icon-choice {
  font-size: 1.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.icon-choice:hover, .icon-choice.selected {
  background: rgba(254, 0, 165, 0.25);
  border-color: var(--secondary);
  transform: scale(1.1);
}

.modal-footer {
  margin-top: 25px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.btn-cancel {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 12px 22px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

.btn-submit-modal {
  background: linear-gradient(135deg, var(--secondary) 0%, #b80277 100%);
  color: #fff;
  border: none;
  padding: 12px 26px;
  border-radius: 12px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--secondary-glow);
  transition: all 0.25s;
}

.btn-submit-modal:hover {
  box-shadow: 0 6px 25px var(--secondary-glow);
  transform: translateY(-2px);
}

/* Toast de Notificação */
.toast-msg {
  position: fixed;
  bottom: 25px;
  right: 25px;
  background: #180933;
  border: 1px solid var(--primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7), 0 0 20px var(--primary-glow);
  padding: 14px 24px;
  border-radius: 14px;
  color: #fff;
  font-weight: 600;
  z-index: 2000;
  display: none;
  animation: toast-in 0.3s ease;
}

@keyframes toast-in {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Responsividade */
@media (max-width: 768px) {
  .app-container {
    padding: 20px;
    margin: 15px auto;
  }
  .arcade-header h1 {
    font-size: 2.2rem;
  }
  .search-row {
    flex-direction: column;
  }
  .search-box {
    width: 100%;
  }
}