/* ==========================================================================
   ESTILOS BASE, RESETS Y UTILIDADES
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Fonde inmersivo Mesh Gradient */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -1;
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.12), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.08), transparent 40%);
  animation: bgMeshPulse 20s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes bgMeshPulse {
  0% { background-position: 0% 0%; transform: scale(1); }
  50% { background-position: 100% 100%; transform: scale(1.05); }
  100% { background-position: 0% 100%; transform: scale(1); }
}

/* Tipografía */
h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

p {
  color: var(--color-text-muted);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
  touch-action: manipulation;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

input, select, textarea {
  font-family: inherit;
  font-size: 16px; /* Evita zoom automático en iOS */
  color: var(--color-text-main);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   BOTONES REUTILIZABLES
   ========================================================================== */
.btn {
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  min-height: 48px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn-primary:active {
  transform: scale(0.98);
  background-color: var(--color-primary-hover);
}

.btn-whatsapp {
  background-color: var(--color-whatsapp);
  color: #FFFFFF;
  box-shadow: var(--shadow-floating);
  font-weight: 700;
  font-size: 1rem;
}

.btn-whatsapp:active {
  transform: scale(0.98);
  background-color: var(--color-whatsapp-hover);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text-main);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:active {
  background-color: var(--color-surface-hover);
}

.btn-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.btn-icon:active {
  transform: scale(0.92);
}

.btn-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-theme-toggle:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  transform: rotate(20deg);
}

.btn-theme-toggle:active {
  transform: scale(0.92);
}

/* ==========================================================================
   BADGES Y PÍLDORAS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-sale {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: #FFFFFF;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.35);
  letter-spacing: 0.04em;
}

.badge-size {
  background-color: var(--color-surface-hover);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  font-size: 0.72rem;
  padding: 3px 8px;
}

.badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-paused {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

/* ==========================================================================
   SKELETON SHIMMER (ESTADOS DE CARGA)
   ========================================================================== */
.skeleton {
  background: linear-gradient(90deg, #EDF2F7 25%, #E2E8F0 50%, #EDF2F7 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite ease-in-out;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-card {
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.skeleton-img {
  aspect-ratio: 1/1;
  width: 100%;
}

.skeleton-content {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ==========================================================================
   TOASTS FLOTANTES
   ========================================================================== */
#toast-container {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 90%;
  max-width: 400px;
  pointer-events: none;
}

.toast {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  pointer-events: auto;
  animation: toast-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success {
  background-color: #065F46;
  border-left: 4px solid var(--color-success);
}

.toast.toast-error {
  background-color: #991B1B;
  border-left: 4px solid var(--color-danger);
}

.toast.toast-warning {
  background-color: #78350F;
  border-left: 4px solid #F59E0B;
}

.toast.toast-info {
  background-color: #1E3A5F;
  border-left: 4px solid #38bdf8;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(-16px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toast-out {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to { opacity: 0; transform: translateY(-16px) scale(0.95); }
}

/* ==========================================================================
   BOTÓN FLOTANTE RESONANTE DE WHATSAPP (CORNER RADAR)
   ========================================================================== */
.btn-floating-wa-radar {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  background-color: var(--color-whatsapp);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
  transition: transform var(--transition-fast);
  animation: wa-pulse-ring 2.2s infinite cubic-bezier(0.455, 0.03, 0.515, 0.955);
}

.btn-floating-wa-radar:hover {
  transform: scale(1.08);
}

.btn-floating-wa-radar:active {
  transform: scale(0.94);
}

.btn-floating-wa-radar .wa-tooltip {
  position: absolute;
  right: 68px;
  background-color: #0F172A;
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-md);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(8px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.btn-floating-wa-radar:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

@keyframes wa-pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7), 0 6px 20px rgba(37, 211, 102, 0.4);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(37, 211, 102, 0), 0 6px 20px rgba(37, 211, 102, 0.4);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0), 0 6px 20px rgba(37, 211, 102, 0.4);
  }
}

/* ==========================================================================
   MODAL TIPO BOTTOM SHEET (O CENTRADO EN PC)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 150;
  display: flex;
  align-items: flex-end; /* Bottom sheet en móvil */
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-sheet {
  background-color: #0F172A;
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  padding: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}

[data-theme="light"] .modal-sheet {
  background-color: #FFFFFF;
  border-color: #E2E8F0;
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

.modal-backdrop.open .modal-sheet {
  transform: translateY(0);
}

@media (min-width: 640px) {
  .modal-backdrop {
    align-items: center; /* Centrado en PC */
    padding: 20px;
  }
  .modal-sheet {
    border-radius: var(--radius-lg);
    transform: scale(0.95) translateY(20px);
  }
  .modal-backdrop.open .modal-sheet {
    transform: scale(1) translateY(0);
  }
}

/* ==========================================================================
   MODAL DE CONFIRMACIÓN ELEGANTE (SIN CONFIRM DEL NAVEGADOR)
   ========================================================================== */
.confirm-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 150;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.confirm-modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.confirm-modal-box {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 380px;
  width: 100%;
  padding: 24px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.confirm-modal-backdrop.open .confirm-modal-box {
  transform: scale(1);
}

.confirm-modal-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.confirm-modal-actions {
  display: flex;
  gap: 10px;
}

.confirm-modal-actions button {
  flex: 1;
}

/* Scrollbar sutil */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   BOTÓN INTELIGENTE VOLVER ARRIBA (SCROLL TO TOP)
   ========================================================================== */
.btn-scroll-top {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  border: 1.5px solid var(--color-border);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  z-index: var(--z-sticky);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.85);
  transition: all var(--transition-normal);
}

[data-theme="light"] .btn-scroll-top {
  background-color: #FFFFFF;
  border-color: var(--color-border);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  color: #0F172A;
}

.btn-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.btn-scroll-top:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-3px) scale(1.08);
  box-shadow: var(--shadow-lg), 0 0 16px rgba(59, 130, 246, 0.25);
}

.btn-scroll-top:active {
  transform: scale(0.92);
}

@media (max-width: 600px) {
  .btn-scroll-top {
    bottom: 20px;
    left: 18px;
    width: 44px;
    height: 44px;
  }
}