@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Inter:wght@300;400;600&display=swap');

:root {
  --primary: #2C3E50;
  --secondary: #EAECEE;
  --bg-color: #ffffff;
  --text-color: #171717;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --font-serif: 'Playfair Display', serif;
  --font-sans: 'Inter', sans-serif;
  --transition: all 0.5s cubic-bezier(0.19, 1, 0.22, 1);
  --spacing-unit: 2rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, .serif {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

h1 { font-size: clamp(2.5rem, 8vw, 5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); }
p { margin-bottom: 1.5rem; font-weight: 300; }

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

/* Layout & Containers */
.container {
  width: 90%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 8rem 0;
}

section {
  position: relative;
  overflow: hidden;
}

/* Glassmorphism Effect */
.glass-effect {
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
}

/* Mega Menu Dropdowns - hidden by default, shown on parent hover */
.mega-menu {
  visibility: hidden;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  transition-delay: 0.3s;
}

/* Bridge the gap between trigger button and dropdown */
.mega-menu::before {
  content: '';
  position: absolute;
  top: -1.5rem;
  left: -1rem;
  right: -1rem;
  height: 1.5rem;
}

.group:hover > .mega-menu {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition-delay: 0s;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 2rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--secondary);
}

.nav-links {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav-links a {
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  font-weight: 600;
}

.nav-links a:hover {
  color: var(--primary);
  opacity: 0.6;
}

/* Asymmetric Grid Projects */
.project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 2rem;
  margin-top: 4rem;
}

.project-item {
  position: relative;
  grid-column: span 6;
  overflow: hidden;
  margin-bottom: 4rem;
}

.project-item:nth-child(even) {
  grid-column: 7 / span 5;
  margin-top: 6rem;
}

.project-item:nth-child(odd) {
  grid-column: 2 / span 5;
}

.project-image {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: var(--transition);
  filter: grayscale(20%);
}

.project-item:hover .project-image {
  transform: scale(1.03);
  filter: grayscale(0%);
}

.project-info {
  margin-top: 1.5rem;
}

/* Glassmorphism Elements */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 3rem;
  border-radius: 2px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1.2rem 2.5rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: var(--primary);
  color: #ffffff;
}

.btn-glass {
  background: var(--glass-bg);
  color: var(--primary);
  backdrop-filter: blur(10px);
  border: 1px solid var(--secondary);
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  background: var(--text-color);
}

/* Bio & Testimonials */
.bio-section {
  display: flex;
  align-items: center;
  gap: 10%;
}

.testimonial-slider {
  padding: 4rem;
  background: var(--secondary);
  text-align: center;
}

.testimonial-item blockquote {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-style: italic;
  max-width: 800px;
  margin: 0 auto;
}

/* Contact Form */
.contact-form {
  max-width: 700px;
  margin: 0 auto;
}

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

input, textarea {
  width: 100%;
  padding: 1rem 0;
  border: none;
  border-bottom: 1px solid var(--primary);
  background: transparent;
  font-family: var(--font-sans);
  color: var(--text-color);
  transition: var(--transition);
}

input:focus, textarea:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-bottom-width: 2px;
  padding-left: 10px;
}

/* Regional SEO Section (Cities around Nice) */
.cities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  border-top: 1px solid var(--secondary);
  padding-top: 4rem;
}

.city-link {
  font-size: 0.9rem;
  color: var(--primary);
  opacity: 0.7;
  padding: 0.5rem 0;
  border-bottom: 1px solid transparent;
}

.city-link:hover {
  opacity: 1;
  border-bottom: 1px solid var(--primary);
}

/* Footer */
footer {
  background: var(--primary);
  color: var(--secondary);
  padding: 6rem 5% 2rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: #ffffff;
}

.copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.75rem;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 1024px) {
  .project-item, .project-item:nth-child(even), .project-item:nth-child(odd) {
    grid-column: span 12;
    margin-top: 2rem;
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  header {
    padding: 1.5rem;
  }
  
  .nav-links {
    display: none; /* Mobile menu implementation recommended */
  }

  .container {
    padding: 4rem 0;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* Utilities */
.spacer { height: 10vh; }
.text-center { text-align: center; }
.mt-large { margin-top: 5rem; }