:root {
  --bg: #0a0e27;
  --bg-soft: #12172f;
  --text: #eaf0ff;
  --muted: #8a93b2;
  --primary: #4f7cff;
  --primary-2: #7c5cff;
  --accent: #00e0b8;
  --danger: #ff4d6d;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0,0,0,.35);
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

[data-theme="light"] {
  --bg: #f6f8ff;
  --bg-soft: #ffffff;
  --text: #0a0e27;
  --muted: #5b6480;
  --shadow: 0 10px 40px rgba(80,100,200,.15);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container { width: min(1200px, 92%); margin: 0 auto; }

/* ============ GLASS ============ */
.glass {
  background: color-mix(in srgb, var(--bg-soft) 70%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
}

/* ============ HEADER ============ */
.header {
  position: sticky; top: 0; z-index: 100;
  border-radius: 0;
  border-left: none; border-right: none; border-top: none;
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; }
.logo__icon { font-size: 26px; }
.nav { display: flex; gap: 26px; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; transition: var(--transition); }
.nav a:hover { color: var(--text); }
.header__actions { display: flex; align-items: center; gap: 12px; }
.theme-toggle, .burger {
  background: transparent; border: 1px solid rgba(255,255,255,.12);
  color: var(--text); border-radius: 12px; cursor: pointer;
  width: 42px; height: 42px; font-size: 18px;
  transition: var(--transition);
}
.theme-toggle:hover { background: rgba(255,255,255,.06); }
.burger { display: none; flex-direction: column; justify-content: center; gap: 5px; padding: 0 10px; }
.burger span { display: block; width: 20px; height: 2px; background: var(--text); transition: var(--transition); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 22px; border-radius: 12px;
  font-weight: 600; font-size: 15px; cursor: pointer;
  text-decoration: none; border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 8px 24px rgba(79,124,255,.35);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(79,124,255,.5); }
.btn--outline { background: transparent; border: 1px solid rgba(255,255,255,.18); color: var(--text); }
.btn--outline:hover { background: rgba(255,255,255,.06); }
.btn--ghost { background: transparent; color: var(--text); }
.btn--lg { padding: 16px 30px; font-size: 16px; }
.btn--block { width: 100%; }

/* ============ HERO ============ */
.hero { position: relative; padding: 90px 0 80px; overflow: hidden; }
.hero__bg {
  position: absolute; inset: -20%;
  background:
    radial-gradient(circle at 20% 30%, rgba(79,124,255,.35), transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(124,92,255,.35), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(0,224,184,.2), transparent 40%);
  filter: blur(30px);
  animation: heroFloat 20s ease-in-out infinite alternate;
}
@keyframes heroFloat {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(2%, -3%) scale(1.1); }
}
.hero__inner { position: relative; z-index: 2; }
.hero__title { font-size: clamp(34px, 6vw, 64px); line-height: 1.05; font-weight: 800; margin: 20px 0; }
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__subtitle { font-size: clamp(15px, 2vw, 19px); color: var(--muted); max-width: 620px; margin-bottom: 32px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 50px; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 40px; }
.hero__stats strong { font-size: 34px; font-weight: 800; display: block; }
.hero__stats span { color: var(--muted); font-size: 14px; }
.badge {
  display: inline-block; padding: 8px 16px; border-radius: 100px;
  background: rgba(0,224,184,.12); color: var(--accent);
  font-weight: 600; font-size: 13px;
}

/* ============ SECTIONS ============ */
.section { padding: 80px 0; }
.section__title { font-size: clamp(26px, 4vw, 42px); font-weight: 800; margin-bottom: 14px; text-align: center; }
.section__subtitle { text-align: center; color: var(--muted); margin-bottom: 46px; }

/* ============ SERVICES ============ */
.services {
  display: grid; gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.service-card {
  padding: 28px; transition: var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.service-card__icon { font-size: 36px; margin-bottom: 14px; }
.service-card__price { color: var(--accent); font-weight: 700; margin-top: 14px; }

/* ============ CALC ============ */
.section--calc { background: var(--bg-soft); }
.calc { max-width: 700px; margin: 0 auto; padding: 32px; display: grid; gap: 20px; }
.calc__field label { display: block; margin-bottom: 8px; font-weight: 600; }
.calc__field--row { display: flex; gap: 22px; flex-wrap: wrap; }
.calc select, .calc input[type=range] { width: 100%; }
.calc select, .form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 15px; border-radius: 12px;
  background: var(--bg); color: var(--text);
  border: 1px solid rgba(255,255,255,.1);
  font-family: inherit; font-size: 15px; transition: var(--transition);
}
.calc select:focus, .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,124,255,.2);
}
.calc__result {
  padding: 20px; border-radius: 12px;
  background: rgba(79,124,255,.1); border: 1px solid rgba(79,124,255,.25);
  text-align: center;
}
.calc__result strong { font-size: 26px; color: var(--accent); display: block; margin: 4px 0; }
.calc__result small { color: var(--muted); font-size: 12px; }

/* ============ DISTRICTS ============ */
.districts-grid {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
}
.district-chip {
  padding: 10px 16px; border-radius: 100px; cursor: pointer;
  background: var(--bg-soft); color: var(--text);
  border: 1px solid rgba(255,255,255,.1);
  font-size: 14px; font-family: inherit;
  transition: var(--transition);
}
.district-chip:hover, .district-chip.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff; border-color: transparent; transform: translateY(-2px);
}

/* ============ FORM ============ */
.lead-form { max-width: 640px; margin: 0 auto; padding: 32px; display: grid; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-error { color: var(--danger); font-size: 13px; display: block; margin-top: 4px; }
.form-checkbox { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--muted); }
.form-checkbox a { color: var(--primary); }

.lead-success { max-width: 500px; margin: 0 auto; padding: 40px; text-align: center; }
.lead-success__icon { font-size: 56px; margin-bottom: 12px; }

/* ============ REVEAL ============ */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ MOBILE ============ */
@media (max-width: 900px) {
  .nav {
    position: fixed; inset: 68px 0 auto 0;
    background: var(--bg-soft); flex-direction: column;
    padding: 20px; gap: 14px;
    transform: translateY(-150%); transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,.1);
  }
  .nav.open { transform: translateY(0); }
  .burger { display: flex; }
  .hide-mobile { display: none; }
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 40px; }
  .section { padding: 50px 0; }
  .hero__stats { gap: 26px; }
  .hero__stats strong { font-size: 26px; }
  .calc { padding: 22px; }
  .lead-form { padding: 22px; }
}