/* ============================================================
   BUYGTAVIRTS — базовые стили
   Тема: ночной город + табло обменника. Тёмный фон, один
   акцент — тёплое золото (цвет валюты), приглушённая бирюза
   для второстепенных элементов и ссылок.
   ============================================================ */

:root {
  --bg: #14161c;
  --bg-elevated: #1b1e27;
  --bg-panel: #21242f;
  --line: #2d3140;
  --line-soft: #262a36;

  --text: #edeff4;
  --text-muted: #9aa1b4;
  --text-faint: #6b7186;

  --gold: #e4b343;
  --gold-strong: #f0c766;
  --teal: #45a99c;
  --teal-strong: #5fc0b2;

  --radius-s: 3px;
  --radius-m: 6px;

  --font-display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-num: "JetBrains Mono", "Consolas", monospace;

  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
}

a {
  color: var(--teal-strong);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--gold-strong);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  margin: 0 0 0.5em;
  letter-spacing: 0.2px;
}

h1 {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.55rem, 2.8vw, 2.1rem);
}

h3 {
  font-size: 1.25rem;
  font-family: var(--font-body);
  font-weight: 600;
}

p {
  margin: 0 0 1em;
  color: var(--text);
  max-width: 70ch;
}

.muted {
  color: var(--text-muted);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(20, 22, 28, 0.92);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 40;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
}

.brand .brand-mark {
  color: var(--gold);
}

.brand .brand-sub {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.72rem;
  color: var(--text-faint);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.94rem;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

.nav-cta {
  border: 1px solid var(--gold);
  color: var(--gold-strong) !important;
  border-radius: var(--radius-s);
  padding: 8px 14px;
}

.nav-cta:hover {
  background: rgba(228, 179, 67, 0.1);
}

.nav-toggle {
  display: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-s);
  padding: 13px 22px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-body);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-gold {
  background: var(--gold);
  color: #1a1607;
}

.btn-gold:hover {
  background: var(--gold-strong);
}

.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--teal-strong);
  color: var(--teal-strong);
}

.btn-block {
  width: 100%;
}

/* ---------- Hero + rate board ---------- */

.hero {
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: start;
}

.hero-copy p.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.trust-row {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.trust-row .trust-item {
  font-size: 0.86rem;
  color: var(--text-faint);
  border-left: 2px solid var(--line);
  padding-left: 10px;
}

.trust-row .trust-item strong {
  display: block;
  color: var(--text);
  font-size: 0.95rem;
}

/* Rate board */

.rate-board {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.rate-board-head {
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.rate-board-head h3 {
  margin: 0;
  font-size: 0.98rem;
  color: var(--text-muted);
  font-weight: 500;
}

.rate-board-head time {
  font-size: 0.78rem;
  color: var(--text-faint);
}

.rate-board-main {
  padding: 26px 22px 20px;
  border-bottom: 1px solid var(--line);
}

.rate-board-main .rate-figure {
  font-family: var(--font-num);
  font-size: 2.5rem;
  color: var(--gold-strong);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.rate-board-main .rate-label {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

.rate-board-list {
  list-style: none;
  margin: 0;
  padding: 6px 0;
}

.rate-board-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 22px;
  color: var(--text);
  border-bottom: 1px solid var(--line-soft);
}

.rate-board-list li:last-child a {
  border-bottom: none;
}

.rate-board-list li a:hover {
  background: rgba(228, 179, 67, 0.06);
  text-decoration: none;
}

.rate-board-list .amount {
  font-family: var(--font-body);
  color: var(--text-muted);
}

.rate-board-list .price {
  font-family: var(--font-num);
  color: var(--gold-strong);
  font-variant-numeric: tabular-nums;
}

.rate-board-foot {
  padding: 14px 22px;
}

.rate-board-foot a {
  font-size: 0.9rem;
}

/* ---------- Sections ---------- */

.section {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: none;
}

.section-head {
  max-width: 62ch;
  margin-bottom: 28px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.info-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 22px;
}

.info-card h3 {
  margin-bottom: 10px;
}

.info-card p {
  color: var(--text-muted);
  margin-bottom: 0;
  font-size: 0.96rem;
}

.step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 18px;
}

.step-list li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.step-list li:last-child {
  border-bottom: none;
}

.step-list li::before {
  content: counter(step);
  font-family: var(--font-num);
  color: var(--gold-strong);
  font-size: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-list h3 {
  margin-bottom: 4px;
}

.step-list p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- Price table ---------- */

.price-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.price-table th,
.price-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line-soft);
}

.price-table thead th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--line);
}

.price-table tbody tr:last-child td {
  border-bottom: none;
}

.price-table td.amount {
  font-weight: 600;
}

.price-table td.price {
  font-family: var(--font-num);
  color: var(--gold-strong);
  font-variant-numeric: tabular-nums;
}

.price-note {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text-faint);
}

/* ---------- Calculator ---------- */

.calc-box {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 28px;
  max-width: 520px;
}

.calc-field {
  margin-bottom: 18px;
}

.calc-field label {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.calc-input-row {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  overflow: hidden;
  background: var(--bg);
}

.calc-input-row input[type="number"] {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-num);
  font-size: 1.3rem;
  padding: 12px 16px;
  min-width: 0;
}

.calc-input-row input[type="number"]:focus {
  outline: none;
}

.calc-input-row .unit {
  display: flex;
  align-items: center;
  padding: 0 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}

.calc-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.calc-chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: var(--radius-s);
  cursor: pointer;
}

.calc-chip:hover,
.calc-chip.active {
  border-color: var(--gold);
  color: var(--gold-strong);
}

.calc-result {
  border-top: 1px solid var(--line);
  margin-top: 22px;
  padding-top: 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.calc-result .result-label {
  color: var(--text-muted);
  font-size: 0.94rem;
}

.calc-result .result-value {
  font-family: var(--font-num);
  font-size: 1.9rem;
  color: var(--gold-strong);
  font-variant-numeric: tabular-nums;
}

.calc-hint {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 14px;
  margin-bottom: 0;
}

/* ---------- FAQ ---------- */

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 600;
  color: var(--text);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-num);
  font-size: 1.4rem;
  color: var(--text-faint);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "\2212";
}

.faq-item .faq-answer {
  padding: 0 4px 18px;
  color: var(--text-muted);
  max-width: 68ch;
}

/* ---------- Breadcrumbs ---------- */

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--text-faint);
  padding: 18px 0 0;
}

.breadcrumbs a {
  color: var(--text-faint);
}

.breadcrumbs a:hover {
  color: var(--teal-strong);
}

/* ---------- Guides ---------- */

.guide-list {
  display: grid;
  gap: 20px;
}

.guide-card {
  display: block;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 22px;
  color: var(--text);
}

.guide-card:hover {
  border-color: var(--teal);
  text-decoration: none;
}

.guide-card .guide-kicker {
  color: var(--teal-strong);
  font-size: 0.82rem;
  margin-bottom: 6px;
}

.guide-card p {
  color: var(--text-muted);
  margin: 6px 0 0;
  font-size: 0.94rem;
}

article.guide-body {
  max-width: 68ch;
}

article.guide-body h2 {
  margin-top: 1.4em;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 44px 0 32px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-col a {
  color: var(--text-muted);
  font-size: 0.92rem;
}

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

.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-faint);
}

.footer-disclaimer {
  max-width: 70ch;
  font-size: 0.8rem;
  color: var(--text-faint);
  margin-top: 18px;
}

/* ---------- Utility ---------- */

.mt-0 { margin-top: 0; }
.center { text-align: center; }

/* ---------- Responsive ---------- */

@media (max-width: 880px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .card-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
    border-radius: var(--radius-s);
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
    cursor: pointer;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .main-nav.nav-open {
    display: flex;
  }

  .main-nav a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .main-nav .nav-cta {
    border: 1px solid var(--gold);
    margin-top: 10px;
    text-align: center;
  }

  .site-header .container {
    height: 60px;
    position: relative;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 40px 0 44px;
  }

  .section {
    padding: 40px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}