/* === Variables === */
:root {
  --primary: #0e7aef;
  --primary-dark: #0b5fc2;
  --accent: #00c9a7;
  --accent2: #06b6d4;
  --dark: #0f172a;
  --gray-900: #1e293b;
  --gray-700: #334155;
  --gray-600: #475569;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50: #f8fafc;
  --white: #ffffff;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(14,122,239,.12), 0 4px 10px rgba(14,122,239,.08);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; color: var(--gray-700); line-height: 1.6; background: var(--white); }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

/* === Layout === */
.container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; border-radius: var(--radius); transition: all .2s; cursor: pointer;
  border: 2px solid transparent; font-size: 15px; padding: 10px 24px;
}
.btn-primary { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--gray-700); border-color: var(--gray-200); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn-lg { padding: 14px 32px; font-size: 17px; }
.btn-block { width: 100%; }

/* === Header === */
#header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent; transition: all .3s;
}
#header.scrolled { border-bottom-color: var(--gray-200); box-shadow: var(--shadow); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 80px; }
.logo img { height: 64px; }
.nav-desktop { display: flex; align-items: center; gap: 32px; }
.nav-desktop a { font-size: 15px; font-weight: 500; color: var(--gray-600); transition: color .2s; }
.nav-desktop a:hover { color: var(--primary); }
.nav-desktop .btn { color: var(--white); }
.nav-desktop .btn:hover { color: var(--white); }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; width: 28px; height: 20px; position: relative; }
.menu-toggle span { display: block; width: 100%; height: 2px; background: var(--gray-700); position: absolute; left: 0; transition: all .3s; }
.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 9px; }
.menu-toggle span:nth-child(3) { top: 18px; }
.menu-toggle.active span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { top: 9px; transform: rotate(-45deg); }
.nav-mobile { display: none; flex-direction: column; gap: 8px; padding: 0 20px 20px; }
.nav-mobile.open { display: flex; }
.nav-mobile a { font-size: 16px; font-weight: 500; padding: 10px 0; color: var(--gray-600); }

/* === Hero === */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  background: linear-gradient(160deg, #eef6ff 0%, var(--white) 40%, #f0fdf9 100%);
}
.badge {
  display: inline-block; background: rgba(14,122,239,.1); color: var(--primary);
  font-size: 14px; font-weight: 600; padding: 6px 18px; border-radius: 50px; margin-bottom: 24px;
}
.hero h1 { font-size: 52px; font-weight: 800; color: var(--dark); line-height: 1.15; margin-bottom: 24px; }
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub { font-size: 19px; color: var(--gray-600); max-width: 600px; margin: 0 auto 40px; line-height: 1.7; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 64px; }
.hero .btn-primary { box-shadow: var(--shadow-lg); }
.stats { display: flex; justify-content: center; gap: 64px; }
.stat { text-align: center; }
.stat strong { display: block; font-size: 36px; font-weight: 800; color: var(--primary); }
.stat span { font-size: 14px; color: var(--gray-500); }

/* === Section Common === */
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { font-size: 36px; font-weight: 800; color: var(--dark); margin-bottom: 16px; }
.section-header p { font-size: 18px; color: var(--gray-600); max-width: 560px; margin: 0 auto; }

/* === Services === */
.services { padding: 100px 0; background: var(--white); }
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.service-card {
  padding: 36px; border-radius: var(--radius-lg); border: 1px solid var(--gray-200);
  transition: all .3s;
}
.service-card:hover { border-color: rgba(14,122,239,.2); box-shadow: 0 8px 30px rgba(14,122,239,.08); transform: translateY(-2px); }
.service-icon {
  width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: rgba(14,122,239,.08); color: var(--primary); margin-bottom: 20px; transition: all .3s;
}
.service-card:hover .service-icon { background: var(--primary); color: var(--white); }
.service-card h3 { font-size: 20px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.service-card p { font-size: 15px; color: var(--gray-600); line-height: 1.7; }

/* === Pricing === */
.pricing { padding: 100px 0; background: var(--gray-50); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 960px; margin: 0 auto; align-items: start; }
.price-card {
  background: var(--white); border-radius: var(--radius-lg); padding: 36px; border: 1px solid var(--gray-200);
  position: relative; transition: all .3s;
}
.price-card.popular { border: 2px solid var(--primary); box-shadow: var(--shadow-lg); transform: scale(1.04); }
.popular-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: var(--white); font-size: 13px; font-weight: 600;
  padding: 4px 20px; border-radius: 50px;
}
.price-header h3 { font-size: 22px; font-weight: 700; color: var(--dark); }
.price-desc { font-size: 14px; color: var(--gray-500); margin-top: 4px; }
.price-amount { margin: 24px 0; }
.price-amount .currency { font-size: 24px; font-weight: 700; color: var(--dark); vertical-align: top; line-height: 1.2; }
.price-amount { font-size: 48px; font-weight: 800; color: var(--dark); }
.price-amount .period { font-size: 16px; font-weight: 500; color: var(--gray-500); }
.price-features { margin-bottom: 28px; }
.price-features li {
  padding: 8px 0; font-size: 14px; color: var(--gray-600);
  display: flex; align-items: flex-start; gap: 10px;
}
.price-features li::before {
  content: '';
  display: inline-block; width: 20px; height: 20px; flex-shrink: 0;
  background: url("data:image/svg+xml,%3Csvg fill='none' stroke='%230e7aef' viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* === Contact === */
.contact { padding: 100px 0; background: var(--white); }
.contact-form { background: var(--gray-50); border-radius: var(--radius-lg); padding: 40px; max-width: 700px; margin: 0 auto; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 28px; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius); border: 1px solid var(--gray-200);
  font-size: 15px; font-family: inherit; color: var(--gray-700); background: var(--white);
  transition: all .2s; outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14,122,239,.12); }
.form-group textarea { resize: none; }
.form-note { text-align: center; font-size: 13px; color: var(--gray-500); margin-top: 16px; }
.form-success { text-align: center; padding: 60px 20px; max-width: 700px; margin: 0 auto; background: #f0fdf4; border-radius: var(--radius-lg); }
.form-success h3 { font-size: 24px; font-weight: 700; color: var(--dark); margin: 16px 0 8px; }
.form-success p { font-size: 16px; color: var(--gray-600); }

/* === Footer === */
.footer { background: var(--dark); color: var(--gray-500); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-logo { margin-bottom: 16px; }
.footer-logo img { height: 44px; filter: brightness(0) invert(1); }
.footer-desc { font-size: 14px; line-height: 1.7; }
.footer h4 { color: var(--white); font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; font-size: 14px; }
.footer ul a:hover { color: var(--white); }
.footer-address { line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; text-align: center; font-size: 14px; }

/* === Responsive === */
@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: block; }
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .stats { gap: 32px; }
  .stat strong { font-size: 28px; }
  .services-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
  .price-card.popular { transform: none; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .section-header h2 { font-size: 28px; }
}