/* Huaris AI: Huaris Technology (huaristech.com) marka paletiyle uyumlu tasarım sistemi. Framework ve JavaScript yok.
   Palet: "petroleum" (koyu turkuaz) ve "mint" (zümrüt) ölçekleri. Tüm renkler :root içinden değişir. */
:root {
  --petroleum-50: #f0fafa;
  --petroleum-100: #d0ecec;
  --petroleum-200: #a1d9d9;
  --petroleum-600: #1b6b6b;
  --petroleum-800: #0d3b3b;
  --petroleum-900: #082828;
  --petroleum-950: #041414;
  --mint-400: #34d399;
  --mint-500: #10b981;
  --bg: #ffffff;
  --bg-alt: var(--petroleum-50);
  --text: #0f172a;
  --text-2: #334155;
  --line: var(--petroleum-100);
  --accent: var(--petroleum-600);
  --accent-strong: var(--petroleum-800);
  --accent-tint: rgba(27, 107, 107, 0.08);
  --on-accent: #ffffff;
  --btn-bg: var(--mint-500);
  --btn-bg-hover: var(--mint-400);
  --on-btn: var(--petroleum-950);
  --dark: var(--petroleum-900);
  --on-dark: #ffffff;
  --on-dark-muted: var(--petroleum-200);
  --nav-text: #e2e8f0;
  --mint: var(--mint-400);
  --header-bg: rgba(8, 40, 40, 0.96);
  --glow: rgba(52, 211, 153, 0.16);
  --grid-light: rgba(16, 185, 129, 0.055);
  --grid-dark: rgba(52, 211, 153, 0.055);
  --radius: 18px;
  --shadow: 0 2px 12px rgba(8, 40, 40, 0.07);
  --max: 1080px;
  --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image: linear-gradient(var(--grid-light) 1px, transparent 1px), linear-gradient(90deg, var(--grid-light) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-font-smoothing: antialiased;
}
::selection { background: rgba(52, 211, 153, 0.28); }
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; inset-inline-start: -9999px; top: 0; background: var(--dark); color: var(--on-dark); padding: 10px 16px; z-index: 100; }
.skip:focus { inset-inline-start: 8px; top: 8px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--header-bg); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; color: var(--on-dark); text-decoration: none; }
.brand:hover { color: var(--on-dark); }
.brand span { color: var(--mint); }
.nav { display: flex; align-items: center; gap: 4px 20px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { color: var(--nav-text); font-weight: 500; text-decoration: none; padding: 6px 0; }
.nav a:hover { color: var(--on-dark); }
/* Dil menüsü (JavaScript gerektirmez) */
.langmenu { position: relative; background: none; border: 0; border-radius: 0; padding: 0; margin: 0; }
.langmenu summary { display: inline-flex; align-items: center; justify-content: flex-start; gap: 6px; cursor: pointer; list-style: none; font-weight: 600; font-size: 0.85rem; color: var(--on-dark); border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 8px; padding: 5px 10px; }
.langmenu summary::-webkit-details-marker { display: none; }
.langmenu summary::before { content: ""; width: 14px; height: 14px; background: currentColor; -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M3 12h18M12 3c3 3.2 3 14.8 0 18M12 3c-3 3.2-3 14.8 0 18'/%3E%3C/svg%3E") center / contain no-repeat; mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M3 12h18M12 3c3 3.2 3 14.8 0 18M12 3c-3 3.2-3 14.8 0 18'/%3E%3C/svg%3E") center / contain no-repeat; }
.langmenu summary::after { content: ""; width: 6px; height: 6px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px); }
.langmenu[open] summary::after { content: ""; transform: rotate(-135deg) translateY(-2px); }
.langmenu summary:hover { border-color: var(--mint); }
.langmenu ul { position: absolute; inset-inline-end: 0; top: calc(100% + 8px); z-index: 60; min-width: 150px; margin: 0; padding: 6px; list-style: none; background: var(--dark); border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 12px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35); }
.langmenu li a { display: block; padding: 8px 12px; border-radius: 8px; color: var(--nav-text); }
.langmenu li a:hover, .langmenu li a[aria-current="true"] { background: rgba(52, 211, 153, 0.12); color: var(--on-dark); }

/* Sections */
section { padding: 72px 0; }
section.alt { background: var(--bg-alt); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 16px; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; }
p { margin: 0 0 16px; }
.lead { font-size: clamp(1.1rem, 2vw, 1.3rem); color: var(--text-2); max-width: 46rem; }
.eyebrow { font-size: 0.85rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--mint); margin-bottom: 12px; }
.section-intro { max-width: 46rem; color: var(--text-2); margin-bottom: 40px; }

/* Hero */
.hero { padding: 96px 0 80px; position: relative; overflow: hidden; color: var(--on-dark); background-color: var(--dark); background-image: linear-gradient(var(--grid-dark) 1px, transparent 1px), linear-gradient(90deg, var(--grid-dark) 1px, transparent 1px); background-size: 48px 48px; }
.hero::before { content: ""; position: absolute; inset: 0; pointer-events: none; background: radial-gradient(ellipse 65% 55% at 0% 0%, var(--glow) 0%, transparent 60%), radial-gradient(ellipse 50% 45% at 100% 100%, rgba(52, 211, 153, 0.10) 0%, transparent 60%); }
.hero > .wrap { position: relative; }
.hero h1 { max-width: 16em; color: var(--on-dark); }
.hero .lead { color: var(--on-dark-muted); }
.hero .lead a { color: var(--mint); }
.hero .lead a:hover { color: var(--on-dark); }
.hero .note { color: var(--on-dark-muted); }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn { display: inline-block; padding: 13px 26px; border-radius: 999px; font-weight: 600; text-decoration: none; border: 1px solid transparent; transition: background-color 0.2s, border-color 0.2s; }
.btn-primary { background: var(--btn-bg); color: var(--on-btn); }
.btn-primary:hover { background: var(--btn-bg-hover); color: var(--on-btn); }
.btn-secondary { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-secondary:hover { background: var(--accent-tint); color: var(--accent-strong); }
.hero .btn-secondary { color: var(--on-dark); border-color: rgba(255, 255, 255, 0.3); }
.hero .btn-secondary:hover { color: var(--on-dark); border-color: var(--mint); background: rgba(52, 211, 153, 0.08); }

/* Cards */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
section.alt .card { border-color: transparent; }
.card p:last-child { margin-bottom: 0; }
.card .out { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 0.95rem; color: var(--text-2); }
.card .out strong { color: var(--text); }
.num { display: inline-block; font-size: 0.85rem; font-weight: 700; color: var(--accent-strong); margin-bottom: 8px; }

/* Table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg); }
table { width: 100%; border-collapse: collapse; min-width: 560px; font-size: 0.98rem; }
th, td { text-align: start; padding: 16px 20px; vertical-align: top; border-bottom: 1px solid var(--line); }
th { background: var(--bg-alt); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.note { font-size: 0.9rem; color: var(--text-2); margin-top: 14px; }

/* FAQ */
details { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 0 24px; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 600; padding: 20px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--accent); }
details[open] summary::after { content: "\2212"; }
details .answer { padding-bottom: 20px; color: var(--text-2); }
details .answer p:last-child { margin-bottom: 0; }

/* Contact & footer */
.contact-box { background: var(--dark); color: var(--on-dark); border-radius: 28px; padding: 56px 32px; text-align: center; }
.contact-box h2 { color: var(--on-dark); }
.contact-box p { color: var(--on-dark-muted); max-width: 38rem; margin-left: auto; margin-right: auto; }
.contact-box a.mail { color: var(--on-dark); font-weight: 600; font-size: 1.15rem; }
.contact-box a.mail:hover { color: var(--mint); }
.contact-box .btn-primary { margin-top: 8px; }
.site-footer { padding: 40px 0 56px; font-size: 0.92rem; color: var(--text-2); border-top: 1px solid var(--line); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; }
.site-footer p { margin: 0 0 6px; }

@media (max-width: 640px) {
  section { padding: 52px 0; }
  .hero { padding: 64px 0 52px; }
  .card { padding: 22px; }
  .contact-box { padding: 40px 20px; }
  .nav { gap: 2px 14px; font-size: 0.9rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}

/* Alt sayfalar */
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.hero.sub { padding: 56px 0 48px; }
.hero.sub h1 { font-size: clamp(1.9rem, 4.4vw, 3rem); max-width: 20em; }
.crumbs { font-size: 0.9rem; color: var(--on-dark-muted); margin-bottom: 20px; }
.crumbs a { color: var(--on-dark-muted); }
.crumbs a:hover { color: var(--on-dark); }
.crumbs [aria-current="page"] { color: var(--on-dark); }
.card .more { margin-top: 14px; font-weight: 600; font-size: 0.95rem; }
.card .more a::after { content: " \2192"; }
.h3 { font-size: 1.25rem; letter-spacing: -0.01em; line-height: 1.15; margin: 0 0 16px; }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; max-width: 46rem; }
.checks li { position: relative; padding-inline-start: 32px; }
.checks li::before { content: ""; position: absolute; inset-inline-start: 0; top: 0.45em; width: 16px; height: 9px; border-left: 3px solid var(--accent); border-bottom: 3px solid var(--accent); transform: rotate(-45deg) translateY(-30%); }
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.steps li { counter-increment: step; }
.steps li::before { content: counter(step); display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 700; font-size: 0.95rem; margin-bottom: 14px; }
.link-card { display: block; text-decoration: none; color: var(--text); transition: box-shadow 0.2s; }
.link-card:hover { color: var(--text); box-shadow: 0 6px 24px rgba(8, 40, 40, 0.14); }
.link-card p { color: var(--text-2); font-size: 0.97rem; }
@media (prefers-reduced-motion: reduce) { .link-card { transition: none; } }

h2 + .grid { margin-top: 28px; }

.prose { max-width: 46rem; margin-left: auto; margin-right: auto; }
.prose + .wrap { margin-top: 32px; }

/* Veri akışı şeması */
.flow { list-style: none; margin: 8px 0 0; padding: 0; display: flex; gap: 32px; }
.flow li { position: relative; flex: 1 1 0; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.flow li h3 { font-size: 1rem; margin-bottom: 8px; }
.flow li p { font-size: 0.93rem; color: var(--text-2); margin: 0; }
.flow li:not(:last-child)::after { content: "\2192"; position: absolute; inset-inline-end: -24px; top: 50%; transform: translateY(-50%); color: var(--accent); font-weight: 700; font-size: 1.2rem; }
@media (max-width: 1000px) {
  .flow { flex-direction: column; gap: 34px; }
  .flow li:not(:last-child)::after { content: "\2193"; inset-inline-end: auto; left: 50%; top: auto; bottom: -30px; transform: translateX(-50%); }
}

.checks + p { margin-top: 20px; }

.table-wrap + p { margin-top: 16px; }

.contact-box :focus-visible, .site-header :focus-visible, .hero :focus-visible { outline-color: var(--mint); }

/* Kök dil seçici sayfası */
.picker-page { background: var(--dark); }
.hero.picker { min-height: 100vh; display: flex; align-items: center; padding: 64px 0; }
.brand-big { font-size: 1.4rem; font-weight: 700; margin: 0 0 24px; color: var(--on-dark); }
.brand-big span { color: var(--mint); }
.hero.picker h1 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); max-width: 24em; }
.picker-list { list-style: none; margin: 28px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; }

/* Sağdan sola (Arapça) ve Çince: yön okları, yazı tipi ve harf aralığı.
   Yerleşim mantıksal özelliklerle (inset-inline, padding-inline, text-align: start) iki yönde de çalışır. */
[dir="rtl"] .card .more a::after { content: " \2190"; }
[dir="rtl"] .flow li:not(:last-child)::after { content: "\2190"; }
@media (max-width: 1000px) {
  [dir="rtl"] .flow li:not(:last-child)::after { content: "\2193"; }
}
:root:lang(ar) { --font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans Arabic", "Geeza Pro", Tahoma, Arial, sans-serif; }
:root:lang(zh) { --font: Inter, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", sans-serif; }
/* Arapça harfler birbirine bağlanır; harf aralığı bu bağı koparır. Çince için de negatif aralık kullanılmaz. */
:lang(ar), :lang(zh) { letter-spacing: normal !important; }
:root:lang(ar) body { line-height: 1.8; }
:root:lang(ar) h1, :root:lang(ar) h2, :root:lang(ar) h3 { line-height: 1.4; }
:root:lang(zh) body { line-height: 1.75; }
:root:lang(zh) h1, :root:lang(zh) h2, :root:lang(zh) h3 { line-height: 1.35; }