/* critical.css - Above the fold content */
:root {
  --primary-color: #6366f1;
  --secondary-color: #a855f7;
  --accent-color: #ec4899;
  --bg-light: #fafafa;
  --bg-dark: #0a0a0a;
  --text-light: #0f172a;
  --text-dark: #f1f5f9;
  --card-light: #ffffff;
  --card-dark: #171717;
  --border-light: #e5e5e5;
  --border-dark: #262626;
  --glass-light: rgba(255, 255, 255, 0.7);
  --glass-dark: rgba(23, 23, 23, 0.7);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI",
    sans-serif;
  transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background-color: var(--bg-light);
  color: var(--text-light);
  overflow-x: hidden;
}

body.dark-mode {
  background-color: var(--bg-dark);
  color: var(--text-dark);
}

/* Navbar - Critical */
.navbar {
  background-color: var(--glass-light);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 1rem 0;
}

body.dark-mode .navbar {
  background-color: var(--glass-dark);
  border-bottom-color: var(--border-dark);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.navbar-brand {
  img.logo-white {
    display: none;
  }
}

body.dark-mode .navbar-brand {
  img.logo-dark {
    display: none;
  }
  img.logo-white {
    display: block;
  }
}

/* Banner - Critical */
.banner {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.banner h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  color: white;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
  line-height: 1.1;
}

.banner p {
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-overlay {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  opacity: 0.5;
}