/* =============================================
   DESIGN SYSTEM — Juan Carlos Mora × RE/MAX
   "Minimalismo de Autoridad"
   ============================================= */

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

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-base: #F9F9F9;
  --color-base-alt: #F0F0F0;
  --color-white: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-dark: #1A1A1A;
  --color-accent: #003DA5;
  --color-accent-hover: #002D7A;
  --color-accent-light: rgba(0, 61, 165, 0.08);
  --color-success: #2D6A4F;
  --color-success-light: rgba(45, 106, 79, 0.1);
  --color-warning: #E07C24;
  --color-danger: #C0392B;
  --color-rent: #003DA5;
  --color-sale: #1A1A1A;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-hover: rgba(0, 0, 0, 0.16);
  --color-overlay: rgba(26, 26, 26, 0.6);
  --color-overlay-deep: rgba(26, 26, 26, 0.85);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --fs-display: clamp(2.5rem, 5vw, 4.5rem);
  --fs-h1: clamp(2rem, 4vw, 3.5rem);
  --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.75rem);
  --fs-h4: clamp(1.1rem, 1.5vw, 1.25rem);
  --fs-body: 1rem;
  --fs-body-lg: 1.125rem;
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;
  --fs-label: 0.6875rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5rem;
  --space-section: clamp(4rem, 8vw, 8rem);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 900px;
  --navbar-height: 80px;
  --border-radius: 4px;
  --border-radius-lg: 8px;
  --border-radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.06), 0 4px 10px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.08), 0 8px 16px rgba(0,0,0,0.04);
  --shadow-card: 0 2px 20px rgba(0,0,0,0.06);
  --shadow-card-hover: 0 8px 30px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Base Styles --- */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-base);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-dark);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
  margin-bottom: var(--space-md);
  font-weight: 300;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--color-accent-hover); }

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

ul, ol { list-style: none; }

::selection {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.12em; font-family: var(--font-sans); }
.text-serif { font-family: var(--font-serif); }
.text-sans { font-family: var(--font-sans); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }
.text-dark { color: var(--color-dark); }
.text-white { color: var(--color-white); }
.text-light-weight { font-weight: 300; }
.text-medium { font-weight: 500; }
.text-semibold { font-weight: 600; }
.text-bold { font-weight: 700; }

.fs-display { font-size: var(--fs-display); }
.fs-body-lg { font-size: var(--fs-body-lg); }
.fs-small { font-size: var(--fs-small); }
.fs-xs { font-size: var(--fs-xs); }
.fs-label { font-size: var(--fs-label); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Keyframe Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(100%); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

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

/* Scroll-triggered animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children .animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.stagger-children .animate-on-scroll:nth-child(2) { transition-delay: 120ms; }
.stagger-children .animate-on-scroll:nth-child(3) { transition-delay: 240ms; }
.stagger-children .animate-on-scroll:nth-child(4) { transition-delay: 360ms; }
.stagger-children .animate-on-scroll:nth-child(5) { transition-delay: 480ms; }