/* ============================================================
   style.css - CalcFinance
   Полный файл: базовые стили + партнёрские блоки
   Сохранять в UTF-8 без BOM.
   ============================================================ */

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

/* ---------- Светлая тема (по умолчанию) ---------- */
:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --result-bg: #eff6ff;
  --radius: 14px;
  --shadow: 0 10px 25px rgba(37,99,235,.08);
}

/* ---------- Тёмная тема ---------- */
[data-theme="dark"] {
  --primary: #3b82f6;
  --primary-dark: #60a5fa;
  --bg: #0f172a;
  --card: #1e293b;
  --text: #f1f5f9;
  --muted: #94a3b8;
  --border: #334155;
  --result-bg: #1e3a5f;
  --shadow: 0 10px 25px rgba(0,0,0,.4);
}

/* Авто-тема при первом заходе */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --primary: #3b82f6;
    --primary-dark: #60a5fa;
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --border: #334155;
    --result-bg: #1e3a5f;
    --shadow: 0 10px 25px rgba(0,0,0,.4);
  }
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 16px;
  transition: background .25s, color .25s;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  transition: background .25s, border-color .25s;
}
.header-inner {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px; gap: 12px;
}
.logo { font-size: 22px; font-weight: 800; color: var(--text); text-decoration: none; }
.logo span { color: var(--primary); }

/* Переключатель темы и кнопки-иконки */
.theme-toggle {
  background: var(--bg); border: 1px solid var(--border);
  width: 40px; height: 40px; border-radius: 10px;
  cursor: pointer; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s, transform .15s;
  flex-shrink: 0;
  color: var(--text);
}
.theme-toggle:hover { transform: scale(1.05); border-color: var(--primary); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Бургер */
.burger {
  display: none; background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; position: relative; flex-shrink: 0;
}
.burger span, .burger span::before, .burger span::after {
  content: ''; position: absolute; left: 8px; width: 24px; height: 2px;
  background: var(--text); transition: .25s;
}
.burger span { top: 19px; }
.burger span::before { top: -8px; }
.burger span::after { top: 8px; }
.burger.active span { background: transparent; }
.burger.active span::before { top: 0; transform: rotate(45deg); }
.burger.active span::after { top: 0; transform: rotate(-45deg); }

.nav { display: flex; gap: 22px; }
.nav a {
  color: var(--muted); text-decoration: none; font-weight: 500; font-size: 15px;
  transition: color .2s; white-space: nowrap;
}
.nav a:hover { color: var(--primary); }

/* ---------- Hero ---------- */
.hero { padding: 50px 0 30px; text-align: center; }
.hero h1 { font-size: 40px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
.hero p { color: var(--muted); font-size: 18px; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-size: 14px; color: var(--muted); margin: 20px 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  line-height: 1.4;
}
.breadcrumbs a { color: var(--primary); text-decoration: none; }
.breadcrumbs a:hover { text-decoration: underline; }
.breadcrumbs span[aria-hidden="true"] { color: var(--border); font-size: 16px; user-select: none; }
.breadcrumbs [aria-current="page"] { color: var(--text); font-weight: 600; }

/* ---------- Category ---------- */
.category { margin: 40px 0; }
.category h2 { font-size: 24px; margin-bottom: 18px; font-weight: 700; }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  text-decoration: none; color: var(--text);
  transition: transform .15s, box-shadow .15s, border-color .15s, background .25s;
  display: block;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.card-icon {
  font-size: 26px; margin-bottom: 10px;
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--result-bg); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.card h3 { font-size: 17px; margin-bottom: 6px; }
.card p { color: var(--muted); font-size: 14px; }

/* ---------- Calculator ---------- */
.calc-wrapper {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  margin: 24px 0; max-width: 720px;
  transition: background .25s, border-color .25s;
}
.calc-wrapper h1 { font-size: 26px; margin-bottom: 8px; }
.calc-wrapper .subtitle { color: var(--muted); margin-bottom: 22px; font-size: 15px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select {
  width: 100%; padding: 13px 14px;
  border: 1px solid var(--border); border-radius: 10px;
  font-size: 16px; background: var(--card); color: var(--text);
  transition: border-color .2s, background .25s, color .25s;
  -webkit-appearance: none;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.btn {
  display: inline-block; padding: 14px 26px;
  background: var(--primary); color: #fff;
  border: none; border-radius: 10px;
  font-size: 16px; font-weight: 600; cursor: pointer;
  transition: background .2s; min-height: 48px;
  touch-action: manipulation;
}
.btn:hover { background: var(--primary-dark); }
.btn-block { display: block; width: 100%; text-align: center; text-decoration: none; }

.btn-pdf { background: #16a34a; }
.btn-pdf:hover { background: #15803d; }
.btn-share { background: #7c3aed; }
.btn-share:hover { background: #6d28d9; }
.btn-copy { background: #475569; }
.btn-copy:hover { background: #334155; }
.btn-qr { background: #0891b2; }
.btn-qr:hover { background: #0e7490; }

.result {
  margin-top: 22px; padding: 20px;
  background: var(--result-bg); border-radius: 12px; display: none;
  transition: background .25s;
}
.result.show { display: block; }
.result-row {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 10px 0; border-bottom: 1px dashed var(--border);
  font-size: 15px;
}
.result-row:last-child { border-bottom: none; }
.result-row .val { font-weight: 700; color: var(--primary); text-align: right; }

/* ---------- SEO-контент ---------- */
.seo-text {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; margin: 24px 0;
  max-width: 720px;
  transition: background .25s, border-color .25s;
}
.seo-text h2 { font-size: 22px; margin: 20px 0 12px; }
.seo-text h3 { font-size: 18px; margin: 16px 0 8px; }
.seo-text p, .seo-text li { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
.seo-text ul, .seo-text ol { padding-left: 22px; margin-bottom: 12px; }

/* ---------- FAQ ---------- */
.faq { max-width: 720px; margin: 24px 0; }
.faq h2 { font-size: 22px; margin-bottom: 16px; }
.faq-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; margin-bottom: 10px; overflow: hidden;
  transition: background .25s, border-color .25s;
}
.faq-item summary {
  padding: 16px 20px; font-weight: 600; cursor: pointer;
  list-style: none; position: relative; padding-right: 44px;
  font-size: 15px; color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; position: absolute; right: 20px; top: 50%;
  transform: translateY(-50%); font-size: 20px; color: var(--primary);
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-item .faq-body { padding: 0 20px 16px; color: var(--muted); font-size: 15px; }

/* ---------- Ads ---------- */
.ad-block {
  background: var(--card); border: 1px dashed var(--border);
  border-radius: 12px; padding: 18px; text-align: center;
  color: var(--muted); font-size: 13px; margin: 24px 0;
  transition: background .25s, border-color .25s;
}
.ad-top { margin-top: 20px; }

/* ---------- Footer ---------- */
.footer {
  margin-top: 60px; padding: 30px 0;
  background: var(--card); border-top: 1px solid var(--border);
  color: var(--muted); font-size: 14px;
  transition: background .25s, border-color .25s;
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 20px; justify-content: space-between; }
.footer a { color: var(--muted); text-decoration: none; margin-right: 16px; }
.footer a:hover { color: var(--primary); }

/* ============================================================
   ПАРТНЁРСКИЕ БЛОКИ
   ============================================================ */
.affiliate-block {
  background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%);
  border: 1px solid #bfdbfe;
  border-radius: 14px;
  padding: 20px;
  margin: 20px 0;
}
[data-theme="dark"] .affiliate-block {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border-color: #334155;
}
.affiliate-head h3 {
  font-size: 17px;
  margin-bottom: 4px;
  color: var(--text);
}
.affiliate-sub {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 14px;
}
.affiliate-list {
  display: grid;
  gap: 8px;
}
.affiliate-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--text);
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.affiliate-item:hover {
  transform: translateX(4px);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(37,99,235,.12);
}
.affiliate-name {
  flex: 1;
  font-weight: 600;
  font-size: 15px;
}
.affiliate-rate {
  font-weight: 700;
  color: #16a34a;
  font-size: 14px;
  white-space: nowrap;
}
.affiliate-arrow {
  color: var(--primary);
  font-size: 18px;
  transition: transform .15s;
}
.affiliate-item:hover .affiliate-arrow {
  transform: translateX(4px);
}
.chart-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin: 20px 0;
}
.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}
.pie-wrap {
  display: flex;
  gap: 24px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin: 20px 0;
  flex-wrap: wrap;
}
.pie-svg {
  width: 200px;
  height: 200px;
  flex-shrink: 0;
}

/* ============================================================
   АДАПТАЦИЯ ПОД МОБИЛЬНЫЕ
   ============================================================ */
@media (max-width: 768px) {
  .burger { display: block; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--card); flex-direction: column; gap: 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 20px rgba(0,0,0,.06);
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 14px 20px; border-bottom: 1px solid var(--border);
    font-size: 16px;
  }

  .hero { padding: 30px 0 20px; }
  .hero h1 { font-size: 26px; }
  .hero p { font-size: 15px; }

  .calc-wrapper, .seo-text { padding: 20px; }
  .calc-wrapper h1 { font-size: 22px; }
  .category h2 { font-size: 20px; }

  .cards { grid-template-columns: 1fr; gap: 12px; }

  .result-row { flex-direction: column; gap: 4px; }
  .result-row .val { text-align: left; }

  .btn { width: 100%; padding: 14px; font-size: 16px; }

  .breadcrumbs { font-size: 13px; }

  .footer-inner { flex-direction: column; gap: 10px; }
  .footer a { display: inline-block; margin-bottom: 6px; }
}

/* ============================================================
   ПЕЧАТЬ (для PDF-отчётов)
   ============================================================ */
@media print {
  .btn-pdf, .btn-share, .btn-copy, .btn-qr,
  .theme-toggle, .burger, .nav,
  .header, .footer, .ad-block, .affiliate-block,
  .presets-slot, .action-buttons { display: none !important; }
}

/* ---------- Виджет валют ---------- */
.currency-widget {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 20px;
  margin: 20px 0;
}
.currency-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.currency-title {
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
}
.currency-date {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  text-align: right;
}
.currency-list {
  display: grid;
  gap: 8px;
}
.currency-item {
  display: grid;
  grid-template-columns: 24px 1fr auto auto;
  gap: 10px;
  align-items: center;
  font-size: 14px;
}
.currency-flag { font-size: 18px; }
.currency-name { color: var(--muted); font-size: 13px; }
.currency-value {
  font-weight: 700;
  color: var(--text);
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 13px;
}
.currency-diff {
  font-size: 12px;
  font-weight: 600;
  min-width: 60px;
  text-align: right;
}
.currency-diff.up { color: #dc2626; }
.currency-diff.down { color: #16a34a; }
.currency-diff.flat { color: var(--muted); }