/* Vorteks tanıtım sitesi. Tek dosya, dış bağımlılık yok; yazı tipi olarak sistem yazı tipleri kullanılır. */
:root {
  --bg: #111216;
  --bg-alt: #17181d;
  --surface: #1e2026;
  --surface-2: #272a31;
  --line: #2e3139;
  --text: #d8dbe2;
  --muted: #9aa0ad;
  --heading: #f4f5f7;
  --accent: #f60b3c;
  --accent-hover: #d40a34;
  --accent-soft: #ff6b88;
  --green: #2fbf71;
  --radius: 14px;
  --shadow: 0 24px 60px -20px rgba(0, 0, 0, .7);
  --font: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 var(--font); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-soft); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--heading); line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 750; }
h3 { font-size: 1.12rem; font-weight: 650; }
p { margin: 0 0 1em; }
:focus-visible { outline: 2px solid var(--accent-soft); outline-offset: 3px; border-radius: 6px; }

.container { width: min(1160px, 100% - 40px); margin-inline: auto; }
.narrow { max-width: 780px; }
.narrow-form { max-width: 480px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }
.lead { font-size: 1.14rem; color: var(--muted); }
.icon { width: 1.25em; height: 1.25em; flex: none; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* Düğmeler */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5em; padding: .62em 1.15em; border-radius: 10px; border: 1px solid transparent; font: 600 .95rem var(--font); cursor: pointer; transition: background .15s, border-color .15s, transform .15s; text-decoration: none; white-space: nowrap; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-lg { padding: .82em 1.5em; font-size: 1.02rem; border-radius: 12px; }
.btn-block { width: 100%; margin-top: .6rem; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: rgba(255, 255, 255, .06); color: var(--heading); border-color: var(--line); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); }
.btn-light { background: #fff; color: #17181d; }
.btn-light:hover { background: #f0f0f3; }
.btn-outline { border-color: rgba(255, 255, 255, .55); color: #fff; }
.btn-outline:hover { background: rgba(255, 255, 255, .12); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.6rem 0 1rem; }
.actions.center { justify-content: center; }
.link-arrow { display: inline-flex; align-items: center; gap: .4em; font-weight: 600; }

/* Üst duyuru şeridi */
.announce { background: linear-gradient(90deg, #b3082c, var(--accent)); color: #fff; font-size: .92rem; }
.announce .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px 16px; padding-block: 9px; text-align: center; }
.announce a { color: #fff; font-weight: 700; display: inline-flex; align-items: center; gap: .3em; text-decoration: underline; text-underline-offset: 3px; }

/* Üst bilgi */
.header { position: sticky; top: 0; z-index: 50; background: rgba(17, 18, 22, .86); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; gap: 28px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--heading); font-weight: 800; font-size: 1.3rem; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.nav > a { color: var(--text); padding: 8px 12px; border-radius: 8px; font-weight: 500; font-size: .96rem; }
.nav > a:hover { background: rgba(255, 255, 255, .07); color: var(--heading); text-decoration: none; }
.nav-actions { margin-left: auto; display: flex; gap: 10px; }
.menu-toggle { position: absolute; opacity: 0; pointer-events: none; }
.menu-button { display: none; margin-left: auto; width: 44px; height: 44px; border-radius: 10px; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.menu-button span { width: 22px; height: 2px; background: var(--heading); border-radius: 2px; }
.menu-toggle:focus-visible + .menu-button { outline: 2px solid var(--accent-soft); }

/* Sayfa işaret yolu */
.breadcrumb { border-bottom: 1px solid var(--line); background: var(--bg-alt); font-size: .88rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; padding: 11px 0; margin-block: 0; }
.breadcrumb li { color: var(--muted); }
.breadcrumb li + li::before { content: "›"; margin: 0 8px; color: #5d6370; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--heading); }
.breadcrumb [aria-current] { color: var(--heading); }

/* Ana görsel alan */
.hero { position: relative; overflow: hidden; padding: 72px 0 84px; background: radial-gradient(900px 480px at 85% -10%, rgba(246, 11, 60, .22), transparent 60%), radial-gradient(700px 400px at -5% 20%, rgba(124, 92, 252, .12), transparent 60%); }
.hero-inner { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px; align-items: center; }
.hero-note { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; color: var(--muted); font-size: .9rem; margin: 0; }
.hero-note.center { justify-content: center; }
.hero-shot img, .shot img { border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); width: 100%; }
.hero-shot { transform: perspective(1400px) rotateY(-6deg) rotateX(2deg); transform-origin: left center; }

/* Bölümler */
.section { padding: 76px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-head { max-width: 680px; margin: 0 auto 40px; text-align: center; }
.section-head p { color: var(--muted); font-size: 1.08rem; margin: 0; }
.page-head { padding: 56px 0 8px; }
.page-head time, .card time { color: var(--muted); font-size: .88rem; }
.split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 56px; align-items: center; }
.split.contact, .auth .split { align-items: start; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 20px; margin-bottom: 32px; }
.card { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; color: var(--text); transition: border-color .15s, transform .15s; scroll-margin-top: 90px; }
a.card:hover { border-color: #4a4f5b; transform: translateY(-3px); text-decoration: none; }
.card h2, .card h3 { font-size: 1.12rem; margin-top: .3em; }
.card p { color: var(--muted); margin: 0; font-size: .97rem; }
.card-icon { display: inline-flex; width: 46px; height: 46px; align-items: center; justify-content: center; border-radius: 12px; background: rgba(246, 11, 60, .14); color: var(--accent-soft); margin-bottom: 10px; }
.card-icon.ok { background: rgba(47, 191, 113, .16); color: var(--green); width: 60px; height: 60px; border-radius: 30px; font-size: 1.4rem; }
.post-card img { border-radius: 10px; margin-bottom: 14px; border: 1px solid var(--line); }

.feature-row { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 5fr); gap: 52px; align-items: center; margin-bottom: 76px; scroll-margin-top: 90px; }
.feature-row:nth-of-type(even) > div:first-child { order: 2; }

.checks, .contact-list, .notfound-links { list-style: none; padding: 0; margin: 1.2rem 0; }
.checks li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; }
.checks .icon { color: var(--green); margin-top: .22em; }

.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.steps span { display: inline-flex; width: 38px; height: 38px; border-radius: 19px; background: var(--accent); color: #fff; font-weight: 800; align-items: center; justify-content: center; margin-bottom: 12px; }
.steps p { color: var(--muted); margin: 0; }
.numbered { padding-left: 1.3em; }
.numbered li { margin-bottom: .7em; padding-left: .3em; }

/* SSS */
.faq { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; }
.faq summary { cursor: pointer; padding: 18px 52px 18px 20px; font-weight: 650; color: var(--heading); list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 20px; top: 50%; translate: 0 -50%; font-size: 1.5rem; font-weight: 400; color: var(--accent-soft); transition: rotate .2s; }
.faq[open] summary::after { rotate: 45deg; }
.faq .prose { padding: 0 20px 6px; }

/* Uzun metin içeriği */
.prose { font-size: 1.04rem; }
.prose h2 { font-size: 1.4rem; margin-top: 1.8em; }
.prose h3 { margin-top: 1.5em; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .45em; }
.prose img { border-radius: 12px; margin-block: 1.4em; border: 1px solid var(--line); }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.shot { margin-bottom: 2rem; }
.note { background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 10px; padding: 14px 18px; color: var(--muted); margin-top: 1.6rem; }

/* Alt çağrı bandı */
.cta-band { background: linear-gradient(135deg, #b3082c, var(--accent) 55%, #ff4d70); color: #fff; padding: 68px 0; text-align: center; }
.cta-band h2 { color: #fff; }
.cta-band p { max-width: 620px; margin-inline: auto; font-size: 1.1rem; opacity: .94; }
.cta-band .actions { justify-content: center; margin-bottom: 0; }

/* Formlar */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.panel h1 { font-size: 1.7rem; }
.panel h2 { font-size: 1.3rem; }
.field { margin-bottom: 16px; }
.field-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.field label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 6px; color: var(--heading); }
.field input:not([type=checkbox]), .field textarea, .field select { width: 100%; background: var(--bg); border: 1px solid var(--line); color: var(--heading); border-radius: 10px; padding: 12px 14px; font: inherit; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(246, 11, 60, .22); }
.field textarea { resize: vertical; }
.field .hint { display: block; color: var(--muted); font-size: .84rem; margin-top: 5px; }
.field-error { display: block; color: #ff8b8f; font-size: .87rem; margin-top: 5px; }
.field.check { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; }
.field.check input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--accent); }
.field.check label { font-weight: 400; margin: 0; color: var(--text); }
.field.check .field-error { grid-column: 2; }
.field .code { font-size: 1.7rem; letter-spacing: .5em; text-align: center; font-weight: 700; }
.alert { border-radius: 10px; padding: 12px 16px; margin-bottom: 18px; font-size: .95rem; }
.alert:empty, .alert.validation-summary-valid { display: none; }
.alert ul { margin: 0; padding-left: 1.1em; }
.alert-ok { background: rgba(47, 191, 113, .13); color: #7fe3ad; border: 1px solid rgba(47, 191, 113, .35); }
.alert-error { background: rgba(229, 72, 77, .13); color: #ff9da1; border: 1px solid rgba(229, 72, 77, .35); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.contact-list li { display: flex; gap: 14px; margin-bottom: 18px; }
.contact-list .icon { color: var(--accent-soft); margin-top: .2em; width: 1.4em; height: 1.4em; }
.contact-list strong { display: block; color: var(--heading); font-size: .9rem; }

/* 404 */
.notfound { padding: 90px 0 110px; }
.notfound-code { font-size: clamp(5rem, 18vw, 9rem); font-weight: 900; line-height: 1; margin: 0 0 12px; background: linear-gradient(135deg, var(--accent), #ff7a95); -webkit-background-clip: text; background-clip: text; color: transparent; }
.notfound-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 22px; margin-top: 2rem; }

/* Alt bilgi */
.footer { background: #0c0d10; border-top: 1px solid var(--line); padding-top: 56px; font-size: .94rem; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 36px; }
.footer p { color: var(--muted); margin-top: 14px; max-width: 340px; }
.footer h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: 9px; }
.footer li a, .social a { color: var(--text); }
.social { display: flex; gap: 16px; }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid var(--line); margin-top: 40px; padding-block: 22px; color: var(--muted); font-size: .86rem; }
.footer-bottom img { background: #fff; padding: 6px 10px; border-radius: 8px; }

/* Çerez bildirimi */
.cookie { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 60; max-width: 620px; margin-inline: auto; background: var(--surface-2); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow); font-size: .92rem; }
.cookie[hidden] { display: none; }
.cookie p { margin: 0; flex: 1; }

@media (max-width: 900px) {
  .hero { padding: 44px 0 56px; }
  .hero-inner, .split, .feature-row { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .feature-row:nth-of-type(even) > div:first-child { order: 0; }
  .hero-shot { transform: none; }
  .section { padding: 52px 0; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .menu-button { display: flex; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--bg); border-bottom: 1px solid var(--line); padding: 12px 20px 20px; gap: 2px; }
  .menu-toggle:checked ~ .nav { display: flex; }
  .nav > a { padding: 12px; }
  .nav-actions { margin: 12px 0 0; flex-direction: column; }
}
@media (max-width: 560px) {
  .field-row, .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .panel { padding: 22px; }
  .cookie { flex-direction: column; align-items: stretch; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .card { transition: none; }
}