/* ============================================
   Jorge Muro - Modern Academic Landing Page
   Design System & Core Styles
   ============================================ */

/* ---- CSS Custom Properties ---- */
:root {
  /* Color Palette - Navy / Gold / Cream */
  --navy-900: #0a1628;
  --navy-800: #0f2140;
  --navy-700: #1a3158;
  --navy-600: #1d3557;
  --navy-500: #264d73;
  --navy-400: #457b9d;
  --navy-300: #6b9dbd;
  
  --gold-500: #c9a84c;
  --gold-400: #d4b86a;
  --gold-300: #e0c988;
  --gold-200: #f0dfa8;
  
  --cream-100: #faf8f5;
  --cream-200: #f5f0e8;
  --cream-300: #ede5d5;
  
  --white: #ffffff;
  --text-dark: #1a1a2e;
  --text-body: #3d3d5c;
  --text-muted: #6b6b8a;
  --text-light: #a3a3c2;
  
  --accent-red: #e63946;
  --accent-teal: #2ec4b6;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --section-pad: clamp(4rem, 8vw, 8rem);
  --container-max: 1200px;
  
  /* Transitions */
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(10, 22, 40, 0.08);
  --shadow-md: 0 8px 24px rgba(10, 22, 40, 0.12);
  --shadow-lg: 0 16px 48px rgba(10, 22, 40, 0.16);
  --shadow-xl: 0 24px 64px rgba(10, 22, 40, 0.2);
  --shadow-glow: 0 0 40px rgba(201, 168, 76, 0.15);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text-body);
  background: var(--cream-100);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s var(--ease-out);
}

/* Skip to content - Accessibility */
.skip-to-content {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--gold-500);
  color: var(--navy-900);
  padding: 12px 24px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 10000;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

ul, ol { list-style: none; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

p {
  font-size: clamp(1rem, 1.1vw, 1.125rem);
  line-height: 1.8;
}

.text-gradient {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--gold-500);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--gold-500);
}

/* ---- Container ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-900);
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 168, 76, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  border-color: var(--gold-400);
  color: var(--gold-400);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--navy-600);
  border: 2px solid var(--navy-600);
}

.btn-outline:hover {
  background: var(--navy-600);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

/* ---- Navigation ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.4s var(--ease-out);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo-svg {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: opacity 0.3s;
}

.nav-logo-icon-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: opacity 0.3s;
}

.nav-logo-svg:hover {
  opacity: 0.85;
}

.nav-logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-300));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--navy-900);
}

.nav-logo-text {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--white);
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold-500);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after { width: 100%; }

.nav-lang {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  cursor: pointer;
  transition: all 0.3s;
}

.nav-lang:hover {
  border-color: var(--gold-400);
  color: var(--gold-400);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 4px;
}

.hamburger span {
  width: 28px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s var(--ease-out);
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy-900);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg, 
    rgba(10, 22, 40, 0.95) 0%, 
    rgba(10, 22, 40, 0.7) 50%,
    rgba(26, 49, 88, 0.8) 100%
  );
}

/* Animated particles */
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--gold-500);
  border-radius: 50%;
  opacity: 0;
  animation: float-particle 8s infinite;
}

@keyframes float-particle {
  0% { opacity: 0; transform: translateY(100vh) scale(0); }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-100px) scale(1); }
}

.hero-content {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding-top: 100px;
  padding-bottom: 60px;
}

.hero-text {
  animation: fadeSlideUp 1s var(--ease-out) 0.3s both;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--gold-500);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-subtitle::before {
  content: '';
  width: 40px;
  height: 2px;
  background: var(--gold-500);
}

.hero-title {
  color: var(--white);
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--gold-500), var(--gold-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.15rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 520px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--gold-500);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-image {
  position: relative;
  animation: fadeSlideUp 1s var(--ease-out) 0.6s both;
  max-width: 420px;
  margin-left: auto;
}

.hero-image-wrapper {
  position: relative;
  overflow: hidden;
}

.hero-image-wrapper::before {
  display: none;
}

.hero-image-wrapper::after {
  display: none;
}

.hero-image-wrapper img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: center top;
  mix-blend-mode: lighten;
}

.hero-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  color: var(--navy-900);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: fadeSlideUp 1s var(--ease-out) 1s both;
}

.hero-badge-icon {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.hero-badge-text {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  line-height: 1.3;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

.scroll-indicator .arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* ---- About Section ---- */