/* ===== Друганоид.ai — визитка. Тёмная тема, цифровой друг ===== */
:root {
  --bg: #0b0f1a;
  --bg-soft: #111827;
  --bg-card: #151e2e;
  --border: #223049;
  --text: #e6edf7;
  --text-dim: #9fb0c8;
  --accent: #38bdf8;      /* синий */
  --accent-2: #34d399;    /* бирюзовый */
  --accent-3: #a78bfa;    /* фиолетовый */
  --grad: linear-gradient(120deg, #38bdf8, #34d399 55%, #a78bfa);
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0,0,0,.45);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 720px; }

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Кнопки ===== */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
  font-family: inherit;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--grad);
  color: #07111f;
  box-shadow: 0 6px 24px rgba(56,189,248,.35);
}
.btn--primary:hover { box-shadow: 0 8px 30px rgba(56,189,248,.5); }

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

.btn--outline { border-color: var(--accent); color: var(--accent); background: transparent; }
.btn--outline:hover { background: rgba(56,189,248,.1); }

.btn--lg { padding: 14px 32px; font-size: 16px; }
.btn--block { display: block; width: 100%; text-align: center; }

/* ===== Шапка ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,15,26,.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); font-weight: 700; font-size: 18px; }
.logo__img { width: 38px; height: 38px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent); }
.logo__dot { color: var(--accent); }

.nav { display: flex; align-items: center; gap: 22px; }
.nav__link { color: var(--text-dim); text-decoration: none; font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav__link:hover { color: var(--text); }
.nav__cta { padding: 9px 18px; font-size: 14px; }

.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  padding: 80px 0 70px;
  background:
    radial-gradient(800px 400px at 85% -10%, rgba(167,139,250,.16), transparent 60%),
    radial-gradient(700px 380px at 10% 20%, rgba(56,189,248,.14), transparent 60%);
}
.hero__inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }

.hero__badge {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 999px;
  background: rgba(52,211,153,.12);
  border: 1px solid rgba(52,211,153,.35);
  color: var(--accent-2);
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero__title { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.12; font-weight: 800; letter-spacing: -.02em; margin-bottom: 18px; }
.hero__subtitle { font-size: 17.5px; color: var(--text-dim); max-width: 540px; margin-bottom: 28px; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; }
.hero__hint { font-size: 14px; color: var(--text-dim); }

.hero__visual { display: flex; justify-content: center; }
.hero__avatar-wrap { position: relative; }
.hero__avatar {
  width: 260px;
  height: 260px;
  border-radius: 28px;
  object-fit: cover;
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
  animation: float 5s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.hero__chat-bubble {
  position: absolute;
  top: -18px;
  left: -60px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 14px;
  box-shadow: var(--shadow);
  max-width: 220px;
  animation: float 5s ease-in-out infinite;
  animation-delay: 1s;
}

/* ===== Секции ===== */
.section { padding: 76px 0; }
.section--dark { background: var(--bg-soft); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__title { font-size: clamp(26px, 3.4vw, 36px); font-weight: 800; letter-spacing: -.02em; margin-bottom: 14px; }
.section__lead { font-size: 16.5px; color: var(--text-dim); max-width: 640px; margin-bottom: 34px; }
.section__note { margin-top: 24px; font-size: 14px; color: var(--text-dim); }

/* ===== Карточки ===== */
.cards { display: grid; gap: 20px; }
.cards--3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .2s, border-color .2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.card:hover { transform: translateY(-4px); border-color: rgba(56,189,248,.5); }
.card__icon { font-size: 30px; }
.card__title { font-size: 18.5px; font-weight: 700; }
.card__text { font-size: 14.5px; color: var(--text-dim); flex: 1; }
.card__price { font-size: 30px; font-weight: 800; letter-spacing: -.02em; }
.card__period { font-size: 15px; color: var(--text-dim); font-weight: 500; }
.card__tag {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--grad);
  color: #07111f;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
}
.card--highlight, .card--featured { position: relative; }
.card--featured { border-color: rgba(56,189,248,.55); box-shadow: 0 0 0 1px rgba(56,189,248,.3), var(--shadow); }

/* ===== Навыки ===== */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.skill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.skill__emoji { font-size: 20px; }

/* ===== Шаги ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.step__num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--grad);
  color: #07111f;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
}
.step__title { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; }
.step__text { font-size: 14px; color: var(--text-dim); }

/* ===== Авторизация ===== */
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
}
.auth-card__tabs { display: flex; gap: 8px; margin-bottom: 24px; }
.auth-card__tab {
  padding: 10px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  font-family: inherit;
  transition: .15s;
}
.auth-card__tab.is-active { background: var(--grad); color: #07111f; border-color: transparent; }

.auth-form { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field__label { font-size: 13.5px; color: var(--text-dim); font-weight: 600; }
.field__input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s;
}
.field__input:focus { border-color: var(--accent); }
.field__row { display: flex; gap: 10px; }
.field__row .field__input { flex: 1; }

.auth-card__note { font-size: 13px; color: var(--text-dim); margin-top: 14px; }
.auth-card__status { margin-top: 16px; padding: 12px 16px; border-radius: 10px; font-size: 14px; }
.auth-card__status.is-ok { background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.35); color: var(--accent-2); }
.auth-card__status.is-err { background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.35); color: #fca5a5; }

/* ===== FAQ ===== */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
}
.faq__q { cursor: pointer; font-weight: 600; font-size: 15.5px; list-style: none; }
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after { content: '+'; float: right; color: var(--accent); font-size: 20px; }
.faq__item[open] .faq__q::after { content: '–'; }
.faq__a { margin-top: 10px; color: var(--text-dim); font-size: 14.5px; }

/* ===== Подвал ===== */
.footer { padding: 34px 0; border-top: 1px solid var(--border); }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer__brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 14.5px; }
.footer__logo { width: 30px; height: 30px; border-radius: 50%; object-fit: cover; }
.footer__links { display: flex; gap: 18px; }
.footer__links a { color: var(--text-dim); text-decoration: none; font-size: 14px; }
.footer__links a:hover { color: var(--text); }
.footer__meta { width: 100%; text-align: center; color: var(--text-dim); font-size: 13px; margin-top: 18px; }

/* ===== Адаптив ===== */
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__subtitle { margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .hero__avatar { width: 200px; height: 200px; }
  .hero__chat-bubble { left: -20px; }
  .cards--3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .skills { grid-template-columns: 1fr; }
  .nav {
    position: fixed;
    inset: 68px 0 auto 0;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    transform: translateY(-130%);
    transition: transform .25s;
  }
  .nav.is-open { transform: translateY(0); }
  .burger { display: flex; }
}

@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .hero { padding: 50px 0 44px; }
  .section { padding: 54px 0; }
}