/* ===========================
   Reset & Variables
   =========================== */

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

:root {
  --primary: #2856d6;
  --primary-dark: #1d3fa8;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-300: #93c5fd;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --secondary: #755cd0;
  --primary-gradient: linear-gradient(135deg, #2856d6 0%, #755cd0 100%);
  --dark: #0a0a0a;
  --gray-900: #1a1a1a;
  --gray-800: #2d2d2d;
  --gray-700: #404040;
  --gray-600: #666666;
  --gray-500: #808080;
  --gray-400: #9a9a9a;
  --gray-300: #cccccc;
  --gray-200: #e5e5e5;
  --gray-100: #f5f5f5;
  --gray-50: #fafafa;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #ffffff 0%, #fafafa 100%);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-width: 320px;
}

/* ===========================
   Typography
   =========================== */

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: 4rem; }
h2 { font-size: 3rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  line-height: 1.75;
  color: var(--gray-600);
}

strong {
  font-weight: 600;
  color: var(--gray-900);
}

a { text-decoration: none; }

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

/* ===========================
   Containers
   =========================== */

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-wide {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
}

.section-alt {
  background: var(--gray-100);
  position: relative;
  overflow: hidden;
}

.section-alt::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.section-alt::after {
  content: '';
  position: absolute;
  bottom: -15%;
  left: -8%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.section-dark {
  background: var(--gray-900);
  color: var(--white);
}

.section-dark h2, .section-dark h3 { color: var(--white); }
.section-dark p { color: var(--gray-400); }

.section-light {
  background: var(--gray-100);
  color: var(--gray-900);
}

.section-light h2, .section-light h3 { color: var(--gray-900); }
.section-light p { color: var(--gray-600); }
.section-light .contact-item h3 { color: var(--gray-900); }
.section-light .contact-icon { opacity: 0.8; }

.section-cta {
  background: var(--gradient);
  padding: 10rem 0;
  text-align: center;
}

.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-title {
  font-size: 3rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #1d4ed8 0%, #6366f1 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  max-width: 700px;
  margin: 0 auto;
}

/* ===========================
   Navigation
   =========================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar .container-wide {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: color 0.2s ease;
}

.nav-link:hover { color: var(--gray-900); }

.btn-nav {
  padding: 0.625rem 1.5rem;
  background: var(--primary-gradient);
  color: var(--white);
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-nav:hover {
  background: linear-gradient(135deg, #1d3fa8 0%, #5a47a8 100%);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  border-radius: 1px;
  transition: all 0.3s ease;
}

/* ===========================
   Buttons
   =========================== */

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--white);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d3fa8 0%, #5a47a8 100%);
  box-shadow: 0 4px 12px rgba(40, 86, 214, 0.35);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
  border-color: var(--gray-900);
  color: var(--gray-900);
}

.btn-lg { padding: 1.125rem 2.5rem; font-size: 1.0625rem; }
.btn-xl { padding: 1.25rem 3rem; font-size: 1.125rem; }