@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Playfair+Display:wght@700;900&display=swap');

:root {
  /* Colors - Corporate Premium Palette */
  --clr-bg: #F8F9FA;
  --clr-surface: #FFFFFF;
  --clr-surface-alt: #F1F5F9;
  --clr-primary: #0F172A;
  --clr-primary-light: #1E293B;
  --clr-accent: #334155;
  --clr-text: #1E293B;
  --clr-text-muted: #64748B;
  --clr-border: #E2E8F0;
  --clr-glass: rgba(255, 255, 255, 0.8);

  /* Typography */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Sizing */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

/* Background Atmosphere */
.bg-atmosphere {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: -1;
  pointer-events: none;
}

.blob {
  position: absolute;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 25s infinite alternate ease-in-out;
}

.blob-1 {
  width: 800px; height: 800px;
  background: radial-gradient(circle, #E2E8F0, transparent 70%);
  top: -20%; left: -10%;
}

.blob-2 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #CBD5E1, transparent 70%);
  bottom: -10%; right: -5%;
  animation-delay: -5s;
}

@keyframes float {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(40px, 40px) rotate(10deg); }
}

/* Typography Utility */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1.2;
}

.text-gradient {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #475569 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.serif {
  font-family: var(--font-heading);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 80px;
  background: var(--clr-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.navbar.scrolled {
  height: 70px;
  background: var(--clr-surface);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.nav-brand img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  transition: var(--transition);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--clr-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-primary);
}

.nav-links a.active {
  position: relative;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; width: 100%; height: 2px;
  background: var(--clr-primary);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--clr-primary);
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--clr-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--clr-primary-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(15, 23, 42, 0.1);
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border: 1px solid var(--clr-primary);
}

.btn-outline:hover {
  background: var(--clr-primary);
  color: #ffffff;
  transform: translateY(-2px);
}

/* Main Layout */
main {
  padding-top: 80px;
}

section {
  padding: 8rem 0;
}

.section-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  text-align: center;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--clr-text-muted);
  max-width: 650px;
  margin: 0 auto 5rem;
  text-align: center;
}

/* Hero */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  text-align: center;
}

.hero .container {
  width: 100%;
}

.hero-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--clr-surface-alt);
  color: var(--clr-primary);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 2rem;
  border-radius: var(--radius-sm);
}

.hero h1 {
  font-size: 5rem;
  margin-bottom: 2rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--clr-text-muted);
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

/* Cards */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px -12px rgba(15, 23, 42, 0.08);
  border-color: var(--clr-primary);
}

.card-sm {
  padding: 2rem;
  border-radius: var(--radius-md);
}

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--clr-surface-alt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: var(--clr-primary);
  transition: var(--transition);
}

.card:hover .card-icon {
  background: var(--clr-primary);
  color: #ffffff;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--clr-primary);
}

/* Utils */
.split-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 6rem;
  align-items: start;
}

/* About Page Specifics */
.about-image-card {
  position: relative;
  z-index: 1;
}

.about-image-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 125%; /* 4:5 Aspect Ratio */
  overflow: hidden;
  background: var(--clr-surface-alt);
}

.about-image-wrapper img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.about-image-card:hover .about-image-wrapper img {
  transform: scale(1.05);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 3rem;
  border-left: 2px solid var(--clr-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 4rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -3.45rem;
  top: 0;
  width: 14px;
  height: 14px;
  background: var(--clr-primary);
  border: 4px solid var(--clr-bg);
  border-radius: 50%;
}

.timeline-date {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 0.5rem;
  display: block;
}

.timeline-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

/* User's footer customization */
footer {
  padding: 5rem 0;
  border-top: 1px solid var(--clr-border);
  text-align: center;
  margin-top: auto;
}

.license-link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  color: var(--clr-text-muted);
  transition: var(--transition);
}

.license-link:hover {
  color: var(--clr-primary);
  text-decoration-color: var(--clr-primary);
}

/* Forms */
.form-group {
  margin-bottom: 2rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  color: var(--clr-primary);
}

.form-control {
  width: 100%;
  padding: 1.25rem;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-primary);
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

textarea.form-control {
  min-height: 180px;
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%230F172A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.25rem center;
  background-size: 1.25rem;
  padding-right: 3rem;
}

/* Responsive */
@media (max-width: 900px) {
  .section-title { font-size: 2.5rem; }
  .hero h1 { font-size: 3.5rem; }
  .split-grid { grid-template-columns: 1fr; gap: 4rem; }
  
  .nav-links {
    position: fixed;
    top: 80px; left: 100%;
    width: 100%; height: calc(100vh - 80px);
    background: var(--clr-surface);
    flex-direction: column;
    padding: 4rem 2rem;
    transition: var(--transition);
    border-top: 1px solid var(--clr-border);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .hero-actions {
    flex-direction: column;
  }
}