/* ==========================================================================
   RETÍFICA OLARIENSE - STYLESHEET (styles.css)
   Aesthetics: Dark Industrial Tech, Glassmorphic UI, Precision Typography
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS VARIABLES & THEME TOKENS
   -------------------------------------------------------------------------- */
:root {
  --color-bg-dark: #0f172a;       /* Slate 900 */
  --color-bg-deeper: #0a0f1c;     /* Deep Industrial Slate */
  --color-bg-footer: #050811;     /* Ultra Dark Footer */
  --color-brand-red: #dc2626;     /* Primary Action Red */
  --color-brand-red-hover: #ef4444;/* Bright Action Red */
  --color-brand-red-dark: #b91c1c; /* Deep Red */
  --color-metal: #334155;         /* Slate 700 */
  --color-metal-light: #475569;   /* Slate 600 */
  --color-text-main: #cbd5e1;     /* Slate 300 */
  --color-text-heading: #ffffff;  /* White */
  --color-text-muted: #94a3b8;    /* Slate 400 */
  --color-whatsapp: #25d366;      /* Official WhatsApp Green */
  --color-whatsapp-hover: #20ba5a;/* WhatsApp Hover Green */
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Montserrat', system-ui, -apple-system, sans-serif;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* --------------------------------------------------------------------------
   2. CUSTOM SCROLLBAR & BASE RESET
   -------------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--color-brand-red);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-brand-red-dark);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-dark);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  overflow-x: hidden;
  line-height: 1.6;
}

/* Custom Scrollbar inside elements */
.custom-scrollbar::-webkit-scrollbar {
  width: 6px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(220, 38, 38, 0.5);
  border-radius: 4px;
}
.custom-scrollbar::-webkit-scrollbar-thumb:hover {
  background: var(--color-brand-red);
}

/* --------------------------------------------------------------------------
   3. ANIMATIONS & REVEAL CLASSES
   -------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Spinner */
.loader {
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-bottom-color: var(--color-brand-red-hover);
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  animation: rotation 1s linear infinite;
}

@keyframes rotation {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Pulsing Glow Animation for WhatsApp */
@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* Background Technical SVG Pattern */
.bg-pattern {
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* --------------------------------------------------------------------------
   4. GLASSMORPHISM COMPONENTS
   -------------------------------------------------------------------------- */
.glass-panel {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-input {
  background-color: #0a0f1c;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  transition: var(--transition-normal);
}

select.glass-input {
  background-color: #0a0f1c;
  color: #ffffff;
  font-size: 14px;
  min-height: 46px;
  border-radius: 0.5rem;
  padding-right: 2.25rem;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
}

input.glass-input {
  background-color: #0a0f1c;
  color: #ffffff;
  font-size: 14px;
  min-height: 46px;
}

select.glass-input option {
  background-color: #0a0f1c;
  color: #ffffff;
  padding: 12px 16px;
  font-size: 14px;
}

.glass-input:focus {
  background-color: #0f172a;
  border-color: var(--color-brand-red-hover);
  color: #ffffff;
  outline: none;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

/* Hide scrollbar for horizontal mobile pill scroll */
.no-scrollbar::-webkit-scrollbar {
  display: none;
}
.no-scrollbar {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

/* --------------------------------------------------------------------------
   5. NAVIGATION BAR & MOBILE MENU
   -------------------------------------------------------------------------- */
.nav-link {
  color: var(--color-text-main);
  font-weight: 500;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-brand-red);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

/* Blog Navigation Badge Button */
.btn-blog {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4rem 0.85rem;
  border-radius: 0.375rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.btn-blog:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* Mobile Drawer Overlay */
#mobile-menu {
  transition: all 0.3s ease-in-out;
}

/* --------------------------------------------------------------------------
   6. TECHNICAL CATALOG & ESTIMATOR SECTION
   -------------------------------------------------------------------------- */
.catalog-card {
  background: rgba(51, 65, 85, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.75rem;
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

.catalog-card:hover {
  background: rgba(51, 65, 85, 0.3);
  border-color: rgba(239, 68, 68, 0.4);
  transform: translateY(-2px);
}

.estimate-box {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.95), rgba(10, 15, 28, 0.95));
  border: 1px solid rgba(220, 38, 38, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* --------------------------------------------------------------------------
   7. INTERACTIVE BOOKING ENGINE (4-STEP MODULE)
   -------------------------------------------------------------------------- */
.booking-step {
  display: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.booking-step.active-step {
  display: block;
  opacity: 1;
  pointer-events: auto;
  position: relative;
  z-index: 10;
}

#step-4.active-step {
  display: flex;
}

.service-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.service-btn:hover {
  border-color: var(--color-brand-red-hover);
  background: rgba(239, 68, 68, 0.08);
  transform: translateY(-2px);
}

.date-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-fast);
}

.date-btn.selected-date {
  background: rgba(185, 28, 28, 0.35);
  border-color: var(--color-brand-red);
}

.time-btn {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

.time-btn:hover {
  border-color: var(--color-brand-red-hover);
  color: var(--color-brand-red-hover);
  background: rgba(239, 68, 68, 0.1);
}

/* Step 4 WhatsApp Action Button (Under New Booking Button) */
.btn-whatsapp-booking {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  width: 100%;
  padding: 0.875rem 1.5rem;
  background-color: var(--color-whatsapp);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 0.5rem;
  border: none;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
  transition: all var(--transition-normal);
  cursor: pointer;
  margin-top: 0.75rem;
}

.btn-whatsapp-booking:hover {
  background-color: var(--color-whatsapp-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

/* --------------------------------------------------------------------------
   8. FIXED FLOATING WHATSAPP BUTTON (RIGHT SIDE)
   -------------------------------------------------------------------------- */
.whatsapp-float-widget {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.whatsapp-float-btn {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-whatsapp);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  animation: pulse-ring 2.5s infinite;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.whatsapp-float-btn:hover {
  background-color: var(--color-whatsapp-hover);
  transform: scale(1.1) rotate(5deg);
  color: #ffffff;
}

.whatsapp-float-tooltip {
  background: rgba(15, 23, 42, 0.95);
  color: #ffffff;
  border: 1px solid rgba(37, 211, 102, 0.4);
  padding: 0.5rem 0.875rem;
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  opacity: 0;
  transform: translateX(10px);
  pointer-events: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.whatsapp-float-widget:hover .whatsapp-float-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* --------------------------------------------------------------------------
   9. FOOTER & UTILITIES
   -------------------------------------------------------------------------- */
.footer-link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   10. MOBILE-FIRST RESPONSIVE FINE TUNING
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  .whatsapp-float-widget {
    right: 1rem;
    bottom: 1rem;
  }
  .whatsapp-float-btn {
    width: 3.25rem;
    height: 3.25rem;
    font-size: 1.5rem;
  }
  .whatsapp-float-tooltip {
    display: none;
  }
  .estimate-box {
    padding: 1.25rem !important;
  }
}

/* --------------------------------------------------------------------------
   11. BLOG COMPONENT ENHANCEMENTS & MODAL STYLES
   -------------------------------------------------------------------------- */
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#article-modal {
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  animation: fadeInModal 0.25s ease-out forwards;
}

@keyframes fadeInModal {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.blog-hero-badge {
  background: linear-gradient(135deg, rgba(220, 38, 38, 0.9), rgba(185, 28, 28, 0.9));
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
}

/* --------------------------------------------------------------------------
   12. MULTI-SELECT SERVICE CARDS & PRE-REGISTRATION STYLES
   -------------------------------------------------------------------------- */
.service-multiselect-card {
  position: relative;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.875rem;
  padding: 1.25rem;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
}

.service-multiselect-card:hover {
  background: rgba(30, 41, 59, 0.85);
  border-color: rgba(220, 38, 38, 0.4);
  transform: translateY(-2px);
}

.service-multiselect-card.selected {
  background: linear-gradient(145deg, rgba(220, 38, 38, 0.18), rgba(15, 23, 42, 0.9));
  border-color: #ef4444;
  box-shadow: 0 0 25px rgba(239, 68, 68, 0.25);
  transform: translateY(-2px);
}

.service-checkbox {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 0.375rem;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: rgba(10, 15, 28, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.service-multiselect-card.selected .service-checkbox {
  background: #dc2626;
  border-color: #ef4444;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.5);
}

.subtotal-sticky-bar {
  background: linear-gradient(135deg, rgba(10, 15, 28, 0.95), rgba(15, 23, 42, 0.95));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(239, 68, 68, 0.4);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(220, 38, 38, 0.2);
}