:root {
  --primary: #0f172a;
  --accent: #0f766e;
  --accent-dark: #0b5f59;
  --accent-light: #f0fdfa;
  --text-main: #334155;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --surface: #ffffff;
  --bg-body: #f8fafc;
  --warning: #9a5a00;
  --warning-bg: #fff7df;
  --shadow: 0 10px 30px rgba(2, 6, 23, .06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text-main);
  background: var(--bg-body);
  font-family: Inter, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { color: var(--accent-dark); }
button, input { font: inherit; }
.container, .header-inner { width: min(1140px, calc(100% - 24px)); margin-inline: auto; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; padding: 12px 16px; background: #fff; color: var(--primary); }
.skip-link:focus { left: 16px; top: 16px; }

.main-header { position: relative; z-index: 20; padding: 16px 0; color: var(--text-main); background: #fff; border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { color: var(--primary); font-size: 22.4px; font-weight: 800; letter-spacing: -1px; line-height: 1; text-decoration: none; white-space: nowrap; }
.brand span { color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 2px; }
.nav-link { display: block; padding: 8px 10px; border-radius: 8px; color: var(--text-main); font-size: 14px; font-weight: 600; line-height: 1.35; text-decoration: none; white-space: nowrap; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.active { color: var(--accent); background: var(--accent-light); }
.nav-menu { position: relative; }
.nav-menu > summary { cursor: pointer; list-style: none; }
.nav-menu > summary::-webkit-details-marker { display: none; }
.nav-menu > summary::after { content: "▾"; margin-left: 5px; font-size: 11px; }
.nav-dropdown { position: absolute; top: calc(100% + 8px); left: 0; width: 230px; padding: 8px; border: 1px solid var(--border); border-radius: 12px; background: #fff; box-shadow: 0 10px 30px rgba(2,6,23,.1); }
.nav-dropdown a { display: block; padding: 8px 12px; border-radius: 7px; color: var(--primary); font-size: 14.4px; font-weight: 500; text-decoration: none; }
.nav-dropdown a:hover, .nav-dropdown a.active { color: var(--accent); background: var(--accent-light); }
.mobile-nav { display: none; position: relative; }
.mobile-nav > summary { display: grid; gap: 4px; padding: 7px; cursor: pointer; list-style: none; }
.mobile-nav > summary::-webkit-details-marker { display: none; }
.mobile-nav > summary span { display: block; width: 24px; height: 2px; background: var(--primary); }
.mobile-nav-panel { position: absolute; top: 42px; right: 0; width: min(290px, calc(100vw - 24px)); padding: 8px; border: 1px solid var(--border); border-radius: 12px; background: #fff; box-shadow: 0 10px 30px rgba(2,6,23,.1); }
.mobile-nav-panel a { display: block; padding: 10px 12px; border-radius: 8px; color: var(--text-main); font-weight: 600; text-decoration: none; }
.mobile-nav-panel a.active, .mobile-nav-panel a:hover { color: var(--accent); background: var(--accent-light); }

.breadcrumbs { padding: 16px 0 4px; color: var(--text-muted); font-size: 14px; }
.breadcrumbs a { text-decoration: none; }
.hero { padding: 36px 0 28px; }
.search-hero { padding-bottom: 14px; }
.search-hero h1 { margin-bottom: 0; }
.year-tag { display: inline-block; color: var(--accent); white-space: nowrap; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: start; }
h1, h2, h3 { margin-top: 0; color: var(--primary); font-family: "Plus Jakarta Sans", Inter, sans-serif; line-height: 1.2; letter-spacing: -.025em; }
h1 { margin-bottom: 14px; font-size: clamp(32px, 5vw, 49.6px); font-weight: 900; }
h2 { margin-bottom: 16px; font-size: clamp(22px, 3vw, 32px); font-weight: 800; }
h3 { margin-bottom: 7px; font-size: 18px; font-weight: 800; }
.lead { max-width: 800px; margin: 0; color: var(--text-muted); font-size: 16.8px; }
.verified-pill { display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; border: 1px solid var(--border); border-radius: 999px; color: var(--primary); background: rgba(255,255,255,.78); font-size: 13.6px; font-weight: 800; white-space: nowrap; }
.stat-strip { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; margin-top: 22px; }
.stat { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: rgba(255,255,255,.8); }
.stat strong { display: block; color: var(--primary); font-family: "Plus Jakarta Sans", Inter, sans-serif; font-size: 20px; font-weight: 900; }
.stat span { color: var(--text-muted); font-size: 14px; }

.search-panel, .content-card, .best-card, .result-row, .product-answer { border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.search-panel { padding: clamp(20px,3vw,28px); box-shadow: var(--shadow); }
.featured-search {
  position: relative;
  padding: clamp(24px, 4vw, 36px);
  border: 2px solid var(--accent);
  background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%);
  box-shadow: 0 16px 38px rgba(15, 118, 110, .13);
}
.featured-search::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 30px;
  width: 92px;
  height: 4px;
  border-radius: 0 0 4px 4px;
  background: var(--accent);
}
.search-kicker {
  display: inline-block;
  margin-bottom: 7px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .055em;
  text-transform: uppercase;
}
.search-panel h2 { margin-bottom: 12px; font-size: 23.2px; font-weight: 900; }
.search-label { display: block; margin-bottom: 7px; color: var(--primary); font-weight: 700; }
.search-box { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 10px; }
.search-input { width: 100%; min-height: 60px; padding: 0 18px; border: 2px solid #94a3b8; border-radius: 12px; color: var(--primary); background: #fff; font-size: 17px; outline: none; }
.search-input::placeholder { color: #94a3b8; }
.search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(15,118,110,.13); }
.button { min-width: 190px; min-height: 60px; padding: 0 24px; border: 1px solid var(--accent); border-radius: 12px; color: #fff; background: var(--accent); font-weight: 900; cursor: pointer; box-shadow: 0 8px 18px rgba(15,118,110,.18); }
.button:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.search-help, .status-line { margin: 10px 0 0; color: var(--text-muted); font-size: 14px; }
.status-line { font-weight: 600; }

.results-section { padding: 24px 0; }
.section-heading { margin: 28px 0 14px; font-size: 23.2px; font-weight: 900; }
.best-card, .product-answer { display: grid; grid-template-columns: 190px minmax(0,1fr); overflow: hidden; box-shadow: var(--shadow); }
.vat-panel { display: flex; min-height: 210px; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 20px; color: #fff; background: var(--primary); text-align: center; }
.vat-panel.rate-1 { background: #0f766e; }
.vat-panel.rate-10 { background: #036575; }
.vat-panel.rate-20 { background: #0f172a; }
.vat-panel.rate-conditional { color: #684400; background: #fde68a; }
.vat-label { font-size: 14px; font-weight: 700; opacity: .9; }
.vat-value { font-family: "Plus Jakarta Sans", Inter, sans-serif; font-size: 45px; font-weight: 900; letter-spacing: -.05em; line-height: 1; }
.vat-panel.rate-conditional .vat-value { font-size: 21px; letter-spacing: -.02em; }
.result-content { min-width: 0; padding: clamp(20px,3vw,28px); overflow-wrap: anywhere; }
.result-content p { margin: 6px 0; }
.result-name { margin: 0 0 7px; color: var(--primary); font-family: "Plus Jakarta Sans", Inter, sans-serif; font-size: 21px; font-weight: 900; }
.gtip-code { color: var(--accent); font-family: "JetBrains Mono", ui-monospace, monospace; font-weight: 700; font-variant-numeric: tabular-nums; }
.result-note { color: var(--text-muted); }
.result-link { display: inline-block; margin-top: 10px; font-weight: 800; }
.similar-list { display: grid; gap: 12px; }
.result-row { display: grid; grid-template-columns: 108px minmax(0,1fr) auto; gap: 16px; align-items: center; padding: 16px; }
.result-row:hover { border-color: rgba(15,118,110,.45); box-shadow: 0 7px 22px rgba(2,6,23,.06); }
.result-row { color: inherit; text-decoration: none; }
.result-row:focus-visible { outline: 3px solid rgba(15,118,110,.3); outline-offset: 2px; }
.mini-rate { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; border-radius: 10px; color: #fff; background: var(--primary); font-weight: 900; text-align: center; }
.mini-rate.rate-1 { background: #0f766e; }
.mini-rate.rate-10 { background: #036575; }
.mini-rate.rate-20 { background: #0f172a; }
.mini-rate.rate-conditional { color: #684400; background: #fde68a; font-size: 13px; }
.result-row p { margin: 3px 0; }
.row-name { margin: 3px 0; color: var(--primary); font-family: Inter, sans-serif; font-size: 16px; font-weight: 800; letter-spacing: 0; }
.row-description { display: -webkit-box; overflow: hidden; color: var(--text-muted); font-size: 15px; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }
.row-arrow { color: var(--accent); font-weight: 800; white-space: nowrap; }
mark { padding: 0 .08em; border-radius: 3px; color: inherit; background: #fef08a; font-weight: 900; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 16px; }
.page-button { padding: 10px 14px; border: 1px solid var(--border); border-radius: 10px; color: var(--primary); background: #fff; font-weight: 800; cursor: pointer; }
.page-button:hover { color: var(--accent); border-color: var(--accent); }
.page-button:disabled { cursor: not-allowed; opacity: .45; }

.data-summary { margin: 12px 0 8px; padding: 26px; border: 1px solid var(--border); border-radius: 16px; background: #fff; }
.data-summary-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: start; }
.data-summary h2 { margin-bottom: 8px; font-size: 22px; }
.data-summary .lead { font-size: 15.5px; }

.content-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; padding: 24px 0 64px; }
.content-card { min-width: 0; padding: 24px; overflow-wrap: anywhere; }
.content-card h2 { font-size: 22px; }
.content-card.wide { grid-column: 1/-1; }
.content-card p:last-child { margin-bottom: 0; }
.warning { padding: 14px 16px; border-left: 4px solid #d49a18; border-radius: 8px; color: #684400; background: var(--warning-bg); }
.source-list { min-width: 0; padding-left: 20px; overflow-wrap: anywhere; }
.source-list li { margin: 9px 0; }
.chapter-callout { background: linear-gradient(135deg, #fff 0%, var(--accent-light) 100%); }
.chapter-grid { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 12px; padding: 0 0 64px; }
.chapter-link { display: flex; min-height: 92px; flex-direction: column; justify-content: center; padding: 18px; border: 1px solid var(--border); border-radius: 14px; color: var(--primary); background: #fff; text-decoration: none; }
.chapter-link:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.chapter-link strong { font-family: "Plus Jakarta Sans", Inter, sans-serif; font-size: 18px; }
.chapter-link span { color: var(--text-muted); font-size: 14px; }
.chapter-link small { display: block; margin-top: 9px; color: var(--accent); font-weight: 800; }
.position-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
.position-link { justify-content: flex-start; }
.position-link span { display: -webkit-box; margin-top: 6px; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 3; line-clamp: 3; }
.position-tools { display: grid; grid-template-columns: auto minmax(240px,1fr) auto minmax(150px,auto) auto; gap: 10px; align-items: center; margin: 0 0 18px; padding: 18px; border: 1px solid var(--border); border-radius: 14px; background: #fff; }
.position-tools label { color: var(--primary); font-weight: 800; }
.position-tools select { min-height: 48px; padding: 0 38px 0 12px; border: 1px solid var(--border); border-radius: 10px; color: var(--primary); background: #fff; font: inherit; }
.position-tools span { color: var(--text-muted); font-weight: 700; white-space: nowrap; }
.compact-input { min-height: 48px; border-width: 1px; font-size: 15px; }
.tariff-list { display: grid; gap: 10px; padding: 0 0 64px; }
.tariff-item { display: grid; grid-template-columns: 108px minmax(0,1fr) auto; gap: 16px; align-items: center; padding: 14px; border: 1px solid var(--border); border-radius: 14px; color: var(--text-main); background: #fff; text-decoration: none; }
.tariff-item:hover { border-color: var(--accent); box-shadow: 0 7px 22px rgba(2,6,23,.06); }
.tariff-item h3 { display: block; margin: 0; color: var(--primary); font-family: Inter, sans-serif; font-size: 16px; font-weight: 800; letter-spacing: 0; }
.tariff-item small { display: -webkit-box; margin-top: 3px; overflow: hidden; color: var(--text-muted); font-size: 14px; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }
.tariff-list.no-filter-results::after { content: "Bu filtrelerle eşleşen GTİP satırı bulunamadı."; display: block; padding: 24px; border: 1px dashed var(--border); border-radius: 12px; color: var(--text-muted); background: #fff; text-align: center; }
.faq-list { display: grid; gap: 10px; }
.faq-list details { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-soft); }
.faq-list summary { padding: 15px 18px; color: var(--primary); font-weight: 800; cursor: pointer; }
.faq-list details p { margin: 0; padding: 0 18px 16px; }

.site-footer { margin-top: auto; padding: 64px 0 32px; color: #fff; background: var(--primary); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 2fr; gap: 32px; }
.footer-about { max-width: 390px; }
.footer-brand { margin-bottom: 16px; color: #fff; }
.site-footer h2 { margin: 0 0 16px; color: #fff; font-size: 16px; font-weight: 700; letter-spacing: 0; }
.site-footer p, .site-footer a { color: rgba(255,255,255,.55); font-size: 14px; }
.site-footer p { margin: 0 0 16px; line-height: 1.6; }
.site-footer a { display: block; margin: 0 0 8px; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-bottom { margin-top: 32px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.5); font-size: 14px; text-align: center; }
.hidden { display: none !important; }

@media (max-width: 1080px) { .main-nav { display: none; } .mobile-nav { display: block; } }
@media (max-width: 760px) {
  .hero { padding: 28px 0 22px; }
  .search-hero { padding-bottom: 12px; }
  .hero-grid, .data-summary-head, .content-grid, .best-card, .product-answer, .result-row, .tariff-item, .footer-grid { grid-template-columns: 1fr; }
  .verified-pill { justify-self: start; }
  .search-box { grid-template-columns: 1fr; }
  .button { width: 100%; }
  .featured-search { padding: 22px 18px; }
  .data-summary { padding: 20px 18px; }
  .vat-panel { min-height: 125px; }
  .result-row { gap: 10px; }
  .mini-rate { width: 112px; }
  .result-row > a { justify-self: start; }
  .stat-strip { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .chapter-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .position-grid, .position-tools { grid-template-columns: 1fr; }
  .tariff-item { gap: 10px; }
  .site-footer { padding-top: 44px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print { .main-header, .search-panel, .pagination, .site-footer { display: none; } body { background: #fff; } .best-card, .content-card, .product-answer { box-shadow: none; } }