/* ============================================================================
   SEASONAL THEMES v1.1 — Letras & Versos
   Estilos festivos. Activados por data-season en <html>.
   Partículas hechas 100% con formas CSS (sin emoji).
   ============================================================================ */

/* ══════════════════════════════════════════════
   ICONO DECORATIVO JUNTO AL LOGO
   ══════════════════════════════════════════════ */
.seasonal-icon {
  font-size: 1.2rem;
  margin-left: 0.3rem;
  display: inline-block;
  animation: seasonIconBounce 2s ease-in-out infinite;
  line-height: 1;
  vertical-align: middle;
}

@keyframes seasonIconBounce {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25%      { transform: translateY(-3px) rotate(-5deg); }
  75%      { transform: translateY(-2px) rotate(5deg); }
}

/* ══════════════════════════════════════════════
   NAVBAR — BORDE INFERIOR FESTIVO
   ══════════════════════════════════════════════ */
[data-season="navidad"] .main-nav {
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, #c0392b, #e74c3c, #d4af37, #e74c3c, #c0392b) 1;
}

[data-season="anio-nuevo"] .main-nav {
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, #d4af37, #f5f5f5, #d4af37, #f5f5f5, #d4af37) 1;
}

[data-season="san-valentin"] .main-nav {
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, #e91e63, #ff6b9d, #e91e63, #ff6b9d, #e91e63) 1;
}

[data-season="halloween"] .main-nav {
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, #ff6f00, #e65100, #7b1fa2, #e65100, #ff6f00) 1;
}

/* ══════════════════════════════════════════════
   TARJETAS — BORDE SUTIL FESTIVO
   ══════════════════════════════════════════════ */
[data-season="navidad"] .writing-card {
  border-color: rgba(192, 57, 43, 0.3);
}
[data-season="navidad"] .writing-card:hover {
  border-color: rgba(192, 57, 43, 0.6);
  box-shadow: 0 8px 30px rgba(192, 57, 43, 0.15), var(--shadow-xl);
}

[data-season="anio-nuevo"] .writing-card {
  border-color: rgba(212, 175, 55, 0.3);
}
[data-season="anio-nuevo"] .writing-card:hover {
  border-color: rgba(212, 175, 55, 0.6);
  box-shadow: 0 8px 30px rgba(212, 175, 55, 0.15), var(--shadow-xl);
}

[data-season="san-valentin"] .writing-card {
  border-color: rgba(233, 30, 99, 0.25);
}
[data-season="san-valentin"] .writing-card:hover {
  border-color: rgba(233, 30, 99, 0.5);
  box-shadow: 0 8px 30px rgba(233, 30, 99, 0.12), var(--shadow-xl);
}

[data-season="halloween"] .writing-card {
  border-color: rgba(255, 111, 0, 0.3);
}
[data-season="halloween"] .writing-card:hover {
  border-color: rgba(255, 111, 0, 0.6);
  box-shadow: 0 8px 30px rgba(255, 111, 0, 0.15), var(--shadow-xl);
}

/* ══════════════════════════════════════════════
   TOAST DE SALUDO FESTIVO
   ══════════════════════════════════════════════ */
.seasonal-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  z-index: 10001;
  padding: 1rem 2rem;
  border-radius: 16px;
  font-family: var(--font-display, 'Playfair Display', Georgia, serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  cursor: pointer;
  opacity: 0;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  text-align: center;
  max-width: calc(100vw - 40px);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  user-select: none;
}

.seasonal-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.seasonal-toast-navidad {
  background: linear-gradient(135deg, #b71c1c, #c62828, #d4af37);
  border: 1px solid rgba(212, 175, 55, 0.4);
}
.seasonal-toast-anio-nuevo {
  background: linear-gradient(135deg, #1a1a2e, #16213e, #d4af37);
  border: 1px solid rgba(212, 175, 55, 0.4);
}
.seasonal-toast-san-valentin {
  background: linear-gradient(135deg, #880e4f, #c2185b, #e91e63);
  border: 1px solid rgba(255, 107, 157, 0.4);
}
.seasonal-toast-halloween {
  background: linear-gradient(135deg, #1a1a2e, #4a148c, #e65100);
  border: 1px solid rgba(255, 111, 0, 0.4);
}

/* ══════════════════════════════════════════════
   CONTENEDOR DE PARTÍCULAS
   ══════════════════════════════════════════════ */
.seasonal-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 3;
}

.seasonal-particle {
  position: absolute;
  top: -20px;
  display: block;
  opacity: 0;
}

/* ── COPOS DE NIEVE (Navidad) — estrella CSS ── */
.sp-snowflake {
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  box-shadow:
    0 0 6px 2px rgba(255, 255, 255, 0.6),
    0 0 12px 4px rgba(200, 220, 255, 0.3);
  animation: snowFall linear infinite;
}

@keyframes snowFall {
  0% {
    transform: translateY(-20px) rotate(0deg) scale(var(--s, 1));
    opacity: 0;
  }
  8% { opacity: 0.9; }
  50% { transform: translateY(50vh) translateX(20px) rotate(180deg) scale(var(--s, 1)); }
  92% { opacity: 0.5; }
  100% {
    transform: translateY(calc(100vh + 20px)) translateX(-15px) rotate(360deg) scale(var(--s, 1));
    opacity: 0;
  }
}

/* ── CONFETI (Año Nuevo) — rectángulos de colores ── */
.sp-confetti {
  width: var(--cw, 5px);
  height: var(--ch, 10px);
  background: var(--cc, #FFD700);
  border-radius: 1px;
  animation: confettiFall linear infinite;
}

.sp-confetti.sp-round {
  border-radius: 50%;
}

@keyframes confettiFall {
  0% {
    transform: translateY(-20px) rotate(0deg) scale(var(--s, 1));
    opacity: 0;
  }
  8% { opacity: 0.9; }
  50% {
    transform: translateY(50vh) rotate(360deg) translateX(30px) scale(var(--s, 1));
  }
  92% { opacity: 0.4; }
  100% {
    transform: translateY(calc(100vh + 20px)) rotate(720deg) translateX(-20px) scale(var(--s, 1));
    opacity: 0;
  }
}

/* ── CORAZONES (San Valentín) — forma CSS ── */
.sp-heart {
  width: 10px;
  height: 10px;
  background: #e91e63;
  position: absolute;
  transform-origin: center;
  animation: heartFloat linear infinite;
  opacity: 0;
}

.sp-heart::before,
.sp-heart::after {
  content: '';
  width: 10px;
  height: 10px;
  background: #e91e63;
  border-radius: 50%;
  position: absolute;
}

.sp-heart::before {
  top: -5px;
  left: 0;
}

.sp-heart::after {
  left: 5px;
  top: 0;
}

@keyframes heartFloat {
  0% {
    transform: translateY(-20px) rotate(-45deg) scale(var(--s, 0.5));
    opacity: 0;
  }
  8% { opacity: 0.7; }
  50% {
    transform: translateY(50vh) translateX(25px) rotate(-45deg) scale(var(--s, 0.5));
  }
  92% { opacity: 0.3; }
  100% {
    transform: translateY(calc(100vh + 20px)) translateX(-15px) rotate(-45deg) scale(var(--s, 0.5));
    opacity: 0;
  }
}

/* ── MURCIÉLAGOS (Halloween) — silueta CSS ── */
.sp-bat {
  width: 18px;
  height: 8px;
  background: transparent;
  position: absolute;
  animation: batFly linear infinite;
  opacity: 0;
}

/* Cuerpo del murciélago */
.sp-bat::before {
  content: '';
  position: absolute;
  width: 6px;
  height: 6px;
  background: #2d1b4e;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Alas del murciélago */
.sp-bat::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 8px;
  top: 0;
  left: 0;
  background:
    radial-gradient(ellipse at 25% 50%, #2d1b4e 0%, #2d1b4e 60%, transparent 61%),
    radial-gradient(ellipse at 75% 50%, #2d1b4e 0%, #2d1b4e 60%, transparent 61%);
  border-radius: 50% 50% 0 0;
}

:root[data-theme="light"] .sp-bat::before,
:root[data-theme="light"] .sp-bat::after {
  background-color: #4a2d6e;
}
:root[data-theme="light"] .sp-bat::after {
  background:
    radial-gradient(ellipse at 25% 50%, #4a2d6e 0%, #4a2d6e 60%, transparent 61%),
    radial-gradient(ellipse at 75% 50%, #4a2d6e 0%, #4a2d6e 60%, transparent 61%);
}

@keyframes batFly {
  0% {
    transform: translateY(-30px) translateX(0) scale(var(--s, 1));
    opacity: 0;
  }
  8% { opacity: 0.75; }
  25% {
    transform: translateY(25vh) translateX(40px) scale(var(--s, 1)) rotate(-10deg);
  }
  50% {
    transform: translateY(50vh) translateX(-30px) scale(var(--s, 1)) rotate(10deg);
  }
  75% {
    transform: translateY(75vh) translateX(25px) scale(var(--s, 1)) rotate(-5deg);
  }
  92% { opacity: 0.4; }
  100% {
    transform: translateY(calc(100vh + 30px)) translateX(-20px) scale(var(--s, 1));
    opacity: 0;
  }
}

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */
@media (max-width: 768px) {
  .seasonal-icon {
    font-size: 1rem;
  }

  .seasonal-toast {
    font-size: 0.95rem;
    padding: 0.875rem 1.5rem;
    bottom: 20px;
  }

  .seasonal-particle:nth-child(n+15) {
    display: none;
  }
}

@media (max-width: 480px) {
  .seasonal-toast {
    font-size: 0.85rem;
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
  }

  .seasonal-particle:nth-child(n+10) {
    display: none;
  }
}

/* ══════════════════════════════════════════════
   ACCESIBILIDAD — Reducir movimiento
   ══════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  .seasonal-icon {
    animation: none;
  }

  .seasonal-particle {
    display: none !important;
  }

  .seasonal-toast {
    transition: opacity 0.3s ease;
    transform: translateX(-50%) translateY(0);
  }
}