/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --surface: #111118;
  --border: #1e1e2e;
  --accent: #6c63ff;
  --accent-light: #8b84ff;
  --text: #e4e4f0;
  --text-muted: #8888aa;
  --radius: 10px;
  --max-w: 1100px;
  --nav-h: 64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== UTIL ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section__title.left { text-align: left; }

.section__sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 56px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover { background: var(--accent-light); }

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover { border-color: var(--accent); color: var(--accent-light); }

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo span { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 32px;
}

.nav__links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.nav__links a:hover { color: var(--text); }

.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 30%, transparent 100%);
  opacity: 0.35;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 48px;
  padding-bottom: 80px;
}

.hero__tag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 20px;
  font-weight: 500;
}

.hero__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 700px;
}

.hero__sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 40px;
}

.hero__cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== SERVICES ===== */
.services { background: var(--surface); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 56px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.card__icon {
  width: 44px;
  height: 44px;
  color: var(--accent);
  margin-bottom: 16px;
}

.card__icon svg { width: 100%; height: 100%; }

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== ABOUT ===== */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about__text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about__text p strong { color: var(--text); }

.about__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}

.about__list li {
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}

.about__list li span { color: var(--accent); font-weight: 700; }

.about__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__num {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent-light);
}

.stat__label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== CONTACT ===== */
.contact { background: var(--surface); }

.contact__inner {
  max-width: 680px;
  margin: 0 auto;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 48px;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form__group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form__group input,
.form__group select,
.form__group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  padding: 10px 14px;
  transition: border-color 0.2s;
  outline: none;
  width: 100%;
}

.form__group select { appearance: none; cursor: pointer; }

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: var(--accent);
}

.form__group input::placeholder,
.form__group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

.form__group textarea { resize: vertical; min-height: 120px; }

.form__success {
  display: none;
  color: #6ee7b7;
  font-size: 0.9rem;
  text-align: center;
}

.form__success.show { display: block; }

/* ===== FOOTER ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer__links a:hover { color: var(--text); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    gap: 20px;
  }
  .nav__toggle { display: block; }

  .about__inner { grid-template-columns: 1fr; gap: 48px; }
  .form__row { grid-template-columns: 1fr; }
  .footer__inner { flex-direction: column; text-align: center; }
  .section { padding: 64px 0; }
}