/* ==========================================================================
   PORTAL DE MINIJUEGOS — ESTILOS GLOBALES DEL HUB
   (Aislados únicamente a la interfaz del portal)
   ========================================================================== */

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --bg-overlay: #080c14;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: #06b6d4;
  --border-glow: rgba(6, 182, 212, 0.4);

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;
  --accent-rose: #f43f5e;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.25);
  --transition-normal: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  min-height: 100vh;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

/* Background Ambient Glows */
.background-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.25;
}

.glow-1 {
  width: 500px;
  height: 500px;
  top: -150px;
  left: 10%;
  background: radial-gradient(circle, var(--accent-cyan), transparent 70%);
}

.glow-2 {
  width: 550px;
  height: 550px;
  bottom: 5%;
  right: 5%;
  background: radial-gradient(circle, var(--accent-purple), transparent 70%);
}

/* ==========================================================================
   HEADER & CONTROLS
   ========================================================================== */

.portal-header {
  position: relative;
  z-index: 10;
  padding: 2.5rem 1.5rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border-subtle);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-icon {
  font-size: 2.5rem;
  line-height: 1;
  filter: drop-shadow(0 0 12px var(--accent-purple));
}

.brand-text h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-text h1 span {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.1rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--text-secondary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.stat-value {
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.15);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
}

/* Controls: Search & Filters */
.controls-container {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

@media (min-width: 768px) {
  .controls-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 420px;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.8rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition-normal);
  outline: none;
}

.search-box input:focus {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow);
  background: rgba(17, 24, 39, 0.95);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.filter-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.chip {
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-normal);
  user-select: none;
}

.chip:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(31, 41, 55, 0.8);
}

.chip.active {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
  font-weight: 600;
}

/* ==========================================================================
   MAIN GALLERY & GRID
   ========================================================================== */

.portal-main {
  position: relative;
  z-index: 10;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 2rem;
}

/* Game Card */
.game-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: var(--transition-normal);
  position: relative;
}

.game-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.6), 0 0 25px rgba(6, 182, 212, 0.2);
  background: var(--bg-card-hover);
}

.game-card-thumbnail-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #0f172a;
  overflow: hidden;
}

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

.game-card:hover .game-card-img {
  transform: scale(1.05);
}

.game-card-body {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.game-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
}

.badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

.badge-difficulty {
  border: 1px solid transparent;
}

.badge-difficulty[data-difficulty="fácil"] {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-difficulty[data-difficulty="medio"] {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border-color: rgba(245, 158, 11, 0.3);
}

.badge-difficulty[data-difficulty="difícil"] {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border-color: rgba(244, 63, 94, 0.3);
}

.badge-ai {
  background: rgba(168, 85, 247, 0.18);
  color: #f3e8ff;
  border: 1px solid rgba(168, 85, 247, 0.45);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.2);
}

.badge-tech {
  background: rgba(6, 182, 212, 0.15);
  color: #a5f3fc;
  border: 1px solid rgba(6, 182, 212, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.game-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.game-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 1.4rem;
  flex: 1;
}

.game-card-footer {
  margin-top: auto;
}

.btn-play {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.2rem;
  background: linear-gradient(135deg, var(--accent-cyan), #0284c7);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.btn-play:hover {
  background: linear-gradient(135deg, #22d3ee, #0369a1);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
  transform: translateY(-2px);
}

.btn-play:active {
  transform: translateY(0);
}

/* Loading & Empty States */
.loading-state, .empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 1.5rem;
  background: var(--bg-card);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-lg);
}

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(6, 182, 212, 0.2);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1.2rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-icon {
  font-size: 3.5rem;
  display: block;
  margin-bottom: 1rem;
}

.empty-state h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.btn-secondary {
  padding: 0.65rem 1.3rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition-normal);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   GAME OVERLAY / MODAL (FULL SCREEN IFRAME)
   ========================================================================== */

.game-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-overlay);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.game-overlay-header {
  height: 64px;
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  flex-shrink: 0;
  z-index: 20;
}

.game-overlay-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  overflow: hidden;
}

.btn-back {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-back:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateX(-2px);
}

.shortcut-kbd {
  background: rgba(0, 0, 0, 0.4);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-secondary);
}

.game-title-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  white-space: nowrap;
}

.game-title-group h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.game-meta-badges {
  display: none;
  gap: 0.4rem;
}

@media (min-width: 640px) {
  .game-meta-badges {
    display: flex;
  }
}

.game-overlay-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-action {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition-normal);
}

.btn-action:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.game-frame-wrapper {
  flex: 1;
  width: 100%;
  height: calc(100vh - 64px);
  position: relative;
  background: #000000;
}

.game-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.portal-footer {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 2rem 1rem;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.85rem;
}