/**
 * BIRBUET - Propiedad Intelectual
 * Master Stylesheet
 * Design System: Intellectual Sovereign / Minimalist Editorial
 */

:root {
  /* Colors */
  --color-primary: #0D0D0D;
  --color-surface: #FAF9F5;
  --color-surface-dim: #DBD8D4;
  --color-surface-pure: #FFFFFF;
  --color-surface-low: #F4F4F0;
  --color-surface-high: #E9E8E4;
  --color-on-surface: #1B1C1A;
  --color-on-surface-variant: #444748;
  --color-navy: #103853;
  --color-navy-dark: #0B2538;
  --color-navy-light: #184D72;
  --color-gold: #D4A017;
  --color-gold-light: #D4C3A1;
  --color-gold-subtle: rgba(212, 160, 23, 0.15);
  --color-outline: #747878;
  --color-outline-variant: #C4C7C7;
  --color-outline-subtle: rgba(116, 120, 120, 0.15);
  --color-white: #FFFFFF;

  /* Typography */
  --font-serif: 'EB Garamond', Georgia, serif;
  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing */
  --container-max: 1280px;
  --margin-desktop: 64px;
  --margin-mobile: 20px;
  --gutter: 32px;
}

/* Base Reset & Smooth Scrolling */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-surface);
  color: var(--color-on-surface);
}

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--color-surface);
  color: var(--color-on-surface);
}

/* Sharp Architecture Rule (0px border radius) */
button, input, select, textarea, .card, .badge, .btn {
  border-radius: 0px !important;
}

/* Selection */
::selection {
  background-color: var(--color-gold-light);
  color: var(--color-primary);
}

/* Typography Utility Classes */
.font-serif {
  font-family: var(--font-serif);
}

.font-sans {
  font-family: var(--font-sans);
}

.display-title {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.editorial-tag {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Editorial Gold Markers & Lines */
.editorial-marker {
  width: 24px;
  height: 2px;
  background-color: var(--color-gold-light);
  margin-bottom: 24px;
}

.gold-divider {
  width: 48px;
  height: 2px;
  background-color: var(--color-gold);
}

/* Header & Glassmorphism Navigation */
.header-glass {
  background-color: rgba(16, 56, 83, 0.4);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background-color 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}

.header-solid {
  background-color: rgba(16, 56, 83, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(212, 195, 161, 0.25);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
  transition: background-color 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}

.header-scrolled {
  background-color: rgba(11, 37, 56, 0.98) !important;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  border-bottom: 1px solid rgba(212, 195, 161, 0.35);
}

/* Page Hero Banner para Páginas Internas */
.page-hero-banner {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: 7rem;
  padding-bottom: 5rem;
  background-color: var(--color-navy-dark, #0B2538);
}

@media (min-width: 768px) {
  .page-hero-banner {
    min-height: 520px;
    padding-top: 8rem;
    padding-bottom: 6rem;
  }
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.85);
  transform: scale(1.03);
  transition: transform 8s ease;
}

.page-hero-banner:hover .page-hero-bg img {
  transform: scale(1.06);
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 37, 56, 0.85) 0%, rgba(13, 13, 13, 0.75) 100%);
  z-index: 2;
}

.page-hero-content {
  position: relative;
  z-index: 5;
  max-width: 880px;
  padding: 0 var(--margin-mobile, 20px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* Link Underline Micro-interaction */
.nav-link-hover {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-link-hover::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1.5px;
  bottom: -4px;
  left: 0;
  background-color: var(--color-gold-light);
  transition: width 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

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

/* Buttons */
.btn-primary {
  background-color: var(--color-white);
  color: var(--color-primary);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.btn-primary:hover {
  background-color: var(--color-gold-light);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border: 1px solid rgba(255, 255, 255, 0.85);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: var(--color-gold-light);
  color: var(--color-gold-light);
  transform: translateY(-2px);
}

.btn-dark {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 1rem 2rem;
  border: 1px solid var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-dark:hover {
  background-color: var(--color-navy);
  border-color: var(--color-navy);
  transform: translateY(-2px);
}

/* Editorial Minimalist Inputs */
.input-minimal {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-outline-variant);
  padding: 0.75rem 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-on-surface);
  outline: none;
  transition: border-color 0.3s ease;
}

.input-minimal:focus {
  border-bottom-color: var(--color-gold);
}

/* Animations */
.animate-fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--color-surface-dim);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-outline);
}