/* ===== 1) База / переменные ===== */
:root {
  /* Цвета */
  --bg: #0b0f17;
  --surface: #111827;
  --surface-2: #0f172a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #7c3aed;

  /* Типографика */
  --font: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --fs-base: 16px;
  --lh: 1.6;

  /* Сетка / размеры */
  --container: 1100px;
  --pad: 20px;
  --radius: 14px;

  /* Тени */
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);

  /* Отступы */
  --space-1: 8px;
  --space-2: 12px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 72px;
}

/* Минимальный reset */
* { box-sizing: border-box; }
html { font-size: var(--fs-base); scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  line-height: var(--lh);
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% 10%, rgba(124, 58, 237, 0.20), transparent 55%),
              radial-gradient(900px 500px at 90% 30%, rgba(59, 130, 246, 0.10), transparent 50%),
              var(--bg);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:focus, button:focus { outline: 2px solid rgba(124, 58, 237, 0.75); outline-offset: 2px; }

.container {
  width: min(var(--container), 100% - (var(--pad) * 2));
  margin-inline: auto;
}

/* ===== 2) Общие элементы ===== */
.section {
  padding: var(--space-7) 0;
}

.section__title {
  margin: 0 0 var(--space-4);
  font-size: 1.6rem;
  letter-spacing: 0.2px;
}

.text {
  margin: 0 0 var(--space-4);
  color: var(--muted);
  max-width: 70ch;
}

.list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.link {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--text);
  opacity: 0.9;
  border-bottom: 1px dashed rgba(255,255,255,0.25);
}
.link:hover { opacity: 1; border-bottom-color: rgba(124,58,237,0.8); }

/* ===== 3) Кнопки ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); border-color: rgba(124,58,237,0.55); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: linear-gradient(180deg, rgba(124,58,237,0.95), rgba(124,58,237,0.70));
  border-color: rgba(124,58,237,0.45);
}
.btn--primary:hover { border-color: rgba(255,255,255,0.25); }

.btn--ghost {
  background: rgba(255,255,255,0.03);
}

/* ===== 4) Карточки и сетка ===== */
.grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: var(--space-4);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card__title {
  margin: 0 0 var(--space-2);
  font-size: 1.05rem;
}

.card__text {
  margin: 0 0 var(--space-3);
  color: var(--muted);
}

/* ===== 5) Header / навигация ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 23, 0.65);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: var(--space-3);
}

.logo {
  font-weight: 800;
  letter-spacing: 0.2px;
  padding: 6px 10px;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.nav {
  display: flex;
  gap: 14px;
  align-items: center;
}

.nav__link {
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--muted);
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.nav__link:hover {
  color: var(--text);
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.06);
}

.burger {
  display: none;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
}

/* ===== 6) Hero ===== */
.hero {
  padding: var(--space-7) 0 var(--space-6);
}

.hero__inner {
  padding: var(--space-6);
  border-radius: calc(var(--radius) + 6px);
  border: 1px solid rgba(255,255,255,0.08);
  background:
    radial-gradient(800px 300px at 20% 20%, rgba(124,58,237,0.20), transparent 55%),
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  box-shadow: var(--shadow);
}

.hero__title {
  margin: 0 0 var(--space-3);
  font-size: 2.2rem;
  line-height: 1.15;
  letter-spacing: 0.2px;
  max-width: 26ch;
}

.hero__text {
  margin: 0 0 var(--space-4);
  color: var(--muted);
  max-width: 70ch;
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ===== 7) Контакты / футер ===== */
.contact {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  background: rgba(0,0,0,0.15);
}

.footer__inner {
  padding: 18px 0;
  color: var(--muted);
}

/* ===== 8) Адаптив ===== */
@media (max-width: 980px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero__inner { padding: var(--space-5); }
  .hero__title { font-size: 2rem; }
}

@media (max-width: 640px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .nav { display: none; }
  .burger { display: inline-flex; align-items: center; justify-content: center; }

  .section { padding: var(--space-6) 0; }
  .hero__inner { padding: var(--space-4); }
  .hero__title { font-size: 1.7rem; }
}
/* ===== Мобильное меню (управляется классом .navwrap--open) ===== */
.navwrap {
  display: contents; /* на десктопе обёртка не влияет на layout */
}

@media (max-width: 640px) {
  .navwrap {
    display: none; /* закрыто по умолчанию */
  }

  .navwrap--open {
    display: block;
    position: fixed;
    inset: 56px 0 auto 0; /* ниже хедера */
    padding: 10px var(--pad);
    z-index: 60;
  }

  .navwrap--open .nav {
    display: grid;
    gap: 8px;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(11, 15, 23, 0.92);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
  }

  .navwrap--open .nav__link {
    justify-content: flex-start;
  }

  /* затемнение фона кликом вне меню */
  .navwrap--open::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: -1;
  }
}
/* Contact layout */
.contact-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: 16px;
}

@media (min-width: 860px) {
  .contact-grid {
    grid-template-columns: 1.4fr 0.6fr;
    align-items: start;
  }
}

/* Card wrapper */
.contact-card {
  border-radius: 16px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, .10);
  background: rgba(255, 255, 255, .04);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

/* Form spacing */
.contact-form { display: grid; gap: 12px; }
.form-row { display: grid; gap: 12px; grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.field { display: grid; gap: 6px; }

.label {
  font-size: 13px;
  letter-spacing: .02em;
  opacity: .85;
}

/* Inputs */
.input, .textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.25);
  color: inherit;
  outline: none;
  transition: border-color .15s ease, background .15s ease;
}

.input::placeholder, .textarea::placeholder { opacity: .55; }

.input:focus, .textarea:focus {
  border-color: rgba(255,255,255,.35);
  background: rgba(0,0,0,.35);
}

.textarea { resize: vertical; min-height: 140px; }

/* Button row */
.contact-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 4px;
}

.contact-note { margin: 0; opacity: .75; font-size: 13px; }

/* Side badges */
.contact-side { display: grid; gap: 12px; }

.contact-badge {
  border-radius: 16px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, .10);
  background: rgba(255, 255, 255, .02);
}

.contact-badge__title {
  margin: 0 0 6px;
  font-size: 16px;
}

.contact-badge__text {
  margin: 0 0 12px;
  opacity: .8;
}