/* IRSWAY — публичный сайт. Ручной CSS без внешних зависимостей.
   Направление письма (RTL для арабского) обеспечивают логические свойства:
   margin-inline/padding-inline/inset-inline, а не left/right. */

/* ── Токены темы ─────────────────────────────────────────────────────────── */
:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #eef2f7;
  --text: #0f172a;
  --muted: #5a6b7e;
  --border: #dfe6ee;
  --accent: #1677ff;
  --accent-strong: #0958d9;
  --accent-soft: #e6f4ff;
  --accent-contrast: #ffffff;
  --warn: #d48806;
  --ok: #389e0d;
  --danger: #cf1322;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1180px;
  --header-h: 64px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1117;
    --surface: #151b24;
    --surface-2: #1c2530;
    --text: #e6edf3;
    --muted: #9aa7b6;
    --border: #263140;
    --accent: #4096ff;
    --accent-strong: #1677ff;
    --accent-soft: #10243c;
    --accent-contrast: #071018;
    --warn: #e8a33d;
    --ok: #6abf4b;
    --danger: #ff6b6b;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
  }
}

:root[data-theme="dark"] {
  --bg: #0d1117;
  --surface: #151b24;
  --surface-2: #1c2530;
  --text: #e6edf3;
  --muted: #9aa7b6;
  --border: #263140;
  --accent: #4096ff;
  --accent-strong: #1677ff;
  --accent-soft: #10243c;
  --accent-contrast: #071018;
  --warn: #e8a33d;
  --ok: #6abf4b;
  --danger: #ff6b6b;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .35);
}

/* ── База ────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", "Noto Sans", "Noto Sans Arabic", "Noto Sans SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; font-weight: 650; }
h1 { font-size: 2.1rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

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

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

.section { padding-block: 48px; }
.section-head { margin-block-end: 24px; }
.section-sub { color: var(--muted); margin: 0; }

/* ── Шапка ───────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-block-end: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: var(--header-h);
  flex-wrap: wrap;
  padding-block: 8px;
}

.brand { display: flex; flex-direction: column; line-height: 1.1; color: inherit; }
.brand:hover { text-decoration: none; }
.brand-mark { font-weight: 800; letter-spacing: .14em; font-size: 1.15rem; }
.brand-tagline { font-size: .68rem; color: var(--muted); letter-spacing: .02em; }

.main-nav {
  display: flex;
  gap: 14px;
  flex: 1 1 auto;
  overflow-x: auto;
  scrollbar-width: thin;
  white-space: nowrap;
}
.main-nav a { color: var(--muted); font-size: .92rem; padding-block: 6px; }
.main-nav a:hover { color: var(--text); text-decoration: none; }
.main-nav a.active { color: var(--accent); border-block-end: 2px solid var(--accent); }

.header-actions { display: flex; align-items: center; gap: 8px; }

/* ── Кнопки ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: .92rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-strong); color: var(--accent-contrast); }
.btn-secondary { background: var(--surface-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--text); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--text); }
.btn-market { background: var(--accent-soft); color: var(--accent-strong); }
.btn-login { background: transparent; border-color: var(--border); color: var(--text); }

.icon-btn {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
}
.icon-btn:hover { border-color: var(--accent); }

/* ── Переключатель языка ─────────────────────────────────────────────────── */
.lang-switch { position: relative; }
.lang-switch summary {
  list-style: none;
  cursor: pointer;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: .88rem;
  user-select: none;
}
.lang-switch summary::-webkit-details-marker { display: none; }
.lang-menu {
  position: absolute;
  inset-block-start: calc(100% + 6px);
  inset-inline-end: 0;
  min-width: 160px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 4px;
  z-index: 30;
}
.lang-option {
  text-align: start;
  padding: 8px 10px;
  background: none;
  border: 0;
  border-radius: 6px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: .9rem;
}
.lang-option:hover { background: var(--surface-2); }
.lang-option.current { color: var(--accent); font-weight: 600; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding-block: 64px 48px;
  background:
    radial-gradient(1200px 400px at 15% -10%, var(--accent-soft), transparent 70%),
    var(--bg);
  border-block-end: 1px solid var(--border);
}
.hero-text { max-width: 760px; }
.hero h1 { font-size: clamp(1.9rem, 4vw, 3rem); }
.hero-sub { color: var(--muted); font-size: 1.05rem; }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-block: 18px; }
.tag {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: .85rem;
  color: var(--muted);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-block-start: 22px; }

/* ── Карточки ────────────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.card h2 { font-size: 1.15rem; }
.card p:last-child { margin-block-end: 0; }
.card-modes { color: var(--accent); font-weight: 600; font-size: .9rem; }

/* ── Курсы валют ─────────────────────────────────────────────────────────── */
.rates-section { background: var(--surface-2); border-block: 1px solid var(--border); }
.rates-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.rate-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.rate-pair { font-weight: 700; letter-spacing: .04em; }
.rate-values { display: flex; gap: 18px; }
.rate-value { display: flex; flex-direction: column; align-items: flex-end; }
.rate-value em { font-style: normal; font-size: .72rem; color: var(--muted); text-transform: uppercase; }
.rate-value b { font-variant-numeric: tabular-nums; font-size: 1.02rem; }
.rates-meta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-block-start: 16px; }
.badge {
  display: inline-flex; gap: 6px; align-items: center;
  background: var(--accent-soft); color: var(--accent-strong);
  border-radius: 999px; padding: 4px 12px; font-size: .8rem;
}
.disclaimer { color: var(--muted); font-size: .85rem; max-width: 80ch; }

/* ── Формы и калькулятор ─────────────────────────────────────────────────── */
.calc-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-wide { grid-column: 1 / -1; }
.field label { font-size: .85rem; color: var(--muted); }
.hint { font-size: .78rem; }

input[type="text"], input[type="email"], input[type="password"], select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: .95rem;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.calc-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.form-error {
  background: color-mix(in srgb, var(--danger) 12%, transparent);
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-block-end: 14px;
}

.calc-result {
  margin-block-start: 18px;
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 20px;
}
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 0; }
.result-grid dt { font-size: .8rem; color: var(--muted); }
.result-grid dd { margin: 4px 0 0; font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.result-total dd { color: var(--accent); font-weight: 700; font-size: 1.5rem; }
.result-manual { color: var(--warn); font-weight: 600; }
.result-note { margin: 12px 0 0; color: var(--muted); font-size: .88rem; }

.calc-explain { margin-block-start: 24px; }

/* ── Страницы ────────────────────────────────────────────────────────────── */
.page-head { padding-block: 48px 8px; border-block-end: 1px solid var(--border); background: var(--surface-2); }
.page-lead { color: var(--muted); font-size: 1.05rem; max-width: 70ch; }
.prose { max-width: 74ch; }

.steps { max-width: 74ch; padding-inline-start: 22px; margin: 0; }
.steps li { margin-block-end: 12px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.stat-value { display: block; font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-label { color: var(--muted); font-size: .9rem; }

.narrow-section { padding-block: 64px; }
.narrow { max-width: 460px; margin-inline: auto; }
.auth-form {
  display: flex; flex-direction: column; gap: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-block-end: 16px;
}

.cta-section { background: var(--surface-2); border-block-start: 1px solid var(--border); }
.cta-inner { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: space-between; }
.cta-inner h2 { margin-block-end: 4px; }
.cta-inner p { margin: 0; color: var(--muted); }

/* ── Футер ───────────────────────────────────────────────────────────────── */
.site-footer { background: var(--surface); border-block-start: 1px solid var(--border); padding-block: 36px 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; }
.footer-col { display: flex; flex-direction: column; gap: 8px; }
.footer-col h3 { font-size: .95rem; margin: 0 0 4px; }
.footer-col a, .footer-col span { color: var(--muted); font-size: .9rem; }
.footer-col a:hover { color: var(--accent); }
.footer-brand p { color: var(--muted); font-size: .9rem; max-width: 42ch; margin: 8px 0 0; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between;
  margin-block-start: 24px; padding-block-start: 16px;
  border-block-start: 1px solid var(--border);
  font-size: .82rem; color: var(--muted);
}

/* ── Адаптив ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .section { padding-block: 32px; }
  .hero { padding-block: 40px 32px; }
  h1 { font-size: 1.8rem; }

  .header-inner { gap: 10px; }
  .brand { flex: 0 0 auto; }
  .main-nav { order: 3; flex-basis: 100%; gap: 12px; padding-block-end: 4px; }
  .header-actions { margin-inline-start: auto; }
  .btn-market .btn-label { display: none; }
  .btn-market { padding-inline: 12px; }

  .rates-grid { grid-template-columns: 1fr; }
  .calc-form { grid-template-columns: 1fr; padding: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

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