/* ===== Lydie's Local Solar Powered LLM Server ===== */
:root {
  --primary: #7c3aed;
  --primary-dark: #6d28d9;
  --secondary: #a78bfa;
  --dark: #1e1b4b;
  --darker: #0f0a2e;
  --accent: #312e81;
  --light: #f5f3ff;
  --white: #ffffff;
  --gray: #6b7280;
  --gradient: linear-gradient(135deg, var(--dark) 0%, var(--accent) 100%);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { width: 90%; max-width: 1200px; margin: 0 auto; }
.section { padding: 80px 0; }
.section-title { text-align: center; font-size: 2.4rem; margin-bottom: .5rem; color: var(--dark); }
.section-subtitle { text-align: center; color: var(--gray); font-size: 1.1rem; margin-bottom: 3rem; }

.btn {
  display: inline-block; padding: 14px 32px; border-radius: 50px;
  font-weight: 600; font-size: 1rem; cursor: pointer;
  transition: all .3s ease; border: none;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(124,58,237,.35); }
.btn-outline { border: 2px solid var(--white); color: var(--white); background: transparent; }
.btn-outline:hover { background: var(--white); color: var(--dark); }

.navbar {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(15,10,46,.92); backdrop-filter: blur(10px);
  padding: 0 5%; display: flex; align-items: center; justify-content: space-between;
  height: 70px; box-shadow: 0 2px 12px rgba(0,0,0,.15);
}
.navbar .logo { font-size: 1.6rem; font-weight: 800; color: var(--white); }
.navbar .logo span { color: var(--secondary); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,.8); font-weight: 500; font-size: .95rem;
  transition: color .3s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--secondary); transition: width .3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--secondary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; }
.hamburger span { width: 28px; height: 3px; background: var(--white); border-radius: 2px; transition: .3s; }

.hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center; background: var(--gradient); color: var(--white);
  padding: 70px 5% 80px; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(167,139,250,.15) 0%, transparent 70%);
}
.hero-content { position: relative; z-index: 1; max-width: 700px; }
.hero h1 { font-size: 3.2rem; font-weight: 800; margin-bottom: 1rem; line-height: 1.15; }
.hero h1 span { color: var(--secondary); }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,.8); margin-bottom: 2rem; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

.stats-bar { background: var(--darker); color: var(--white); padding: 40px 5%; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem;
  text-align: center; max-width: 1200px; margin: 0 auto;
}
.stat-number { font-size: 2.8rem; font-weight: 800; color: var(--secondary); }
.stat-label { font-size: .95rem; color: rgba(255,255,255,.7); margin-top: .3rem; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.card {
  background: var(--white); border-radius: 16px; padding: 2rem;
  box-shadow: 0 4px 24px rgba(0,0,0,.08); transition: transform .3s, box-shadow .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,.12); }
.card-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.card h3 { font-size: 1.25rem; margin-bottom: .75rem; color: var(--dark); }
.card p { color: var(--gray); font-size: .95rem; }

.about-hero, .hardware-hero, .software-hero, .contact-hero {
  background: var(--gradient); padding: 140px 5% 80px; text-align: center; color: var(--white);
}
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.about-text h2 { font-size: 2rem; margin-bottom: 1rem; color: var(--dark); }
.about-text p { color: var(--gray); margin-bottom: 1rem; }
.about-image { background: var(--gradient); border-radius: 16px; height: 350px; display: flex; align-items: center; justify-content: center; font-size: 6rem; color: var(--secondary); }

.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; margin-top: 2rem; }
.value-item { text-align: center; padding: 1.5rem; }
.value-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.value-item h4 { margin-bottom: .5rem; color: var(--dark); }
.value-item p { font-size: .9rem; color: var(--gray); }

.spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }
.spec-card { background: var(--light); border-radius: 12px; padding: 1.5rem; text-align: center; }
.spec-value { font-size: 1.8rem; font-weight: 800; color: var(--primary-dark); margin-bottom: .3rem; }
.spec-label { font-size: .9rem; color: var(--gray); }

.tech-stack { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-info-card { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 2rem; }
.contact-icon { font-size: 1.8rem; color: var(--secondary); min-width: 40px; text-align: center; }
.contact-info-card h4 { margin-bottom: .25rem; color: var(--dark); }
.contact-info-card p { color: var(--gray); font-size: .95rem; }

form input, form textarea, form select {
  width: 100%; padding: 14px 18px; border: 2px solid #e0e0e0; border-radius: 10px;
  font-size: 1rem; font-family: inherit; margin-bottom: 1rem; transition: border .3s; background: var(--white);
}
form input:focus, form textarea:focus { outline: none; border-color: var(--primary); }
form textarea { min-height: 140px; resize: vertical; }
.form-group label { display: block; margin-bottom: .4rem; font-weight: 600; color: var(--dark); }

.footer { background: var(--darker); color: rgba(255,255,255,.7); padding: 60px 5% 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer h4 { color: var(--white); margin-bottom: 1rem; font-size: 1.1rem; }
.footer p, .footer a { font-size: .9rem; color: rgba(255,255,255,.6); }
.footer a:hover { color: var(--secondary); }
.footer-links li { margin-bottom: .5rem; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 1.5rem; text-align: center; font-size: .85rem; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 70px; left: 0; width: 100%;
    background: rgba(15,10,46,.98); padding: 2rem; gap: 1.5rem;
  }
  .hero h1 { font-size: 2.2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-content, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}