/* GRIE şirket sitesi. Stripe disiplini: beyaz zemin, sıkı ızgara, sakin tipografi, tek vurgu, ürün sayfada. */
:root {
  --bg: #ffffff; --bg-soft: #f6f8fb; --ink: #0a2540; --ink-2: #425466; --ink-3: #8b90a0; --line: #e6e8ee;
  --accent: #635bff; --accent-ink: #4f47d6; --pos: #0e9f6e; --neg: #df1b41; --neu: #9aa3b2;
  --display: 'Inter Tight', 'Inter', system-ui, -apple-system, sans-serif;
  --body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #0b1220; --bg-soft: #111a2b; --ink: #edf0f5; --ink-2: #b6bfcc; --ink-3: #7f8797; --line: #22304a; --accent: #8f88ff; --accent-ink: #b3adff; --neu: #6c7688; color-scheme: dark; }
  :root:not([data-theme="light"]) img[src$="-siyah.svg"] { filter: invert(1); }
}
:root[data-theme="dark"] { --bg: #0b1220; --bg-soft: #111a2b; --ink: #edf0f5; --ink-2: #b6bfcc; --ink-3: #7f8797; --line: #22304a; --accent: #8f88ff; --accent-ink: #b3adff; --neu: #6c7688; color-scheme: dark; }
:root[data-theme="dark"] img[src$="-siyah.svg"] { filter: invert(1); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--body); font-size: 16px; line-height: 1.6; padding-inline: clamp(16px, 4vw, 32px); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { color: inherit; }
.wrap { max-width: 1080px; margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 6px 10px; }
.skip:focus { left: 16px; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--accent-ink); margin: 0 0 10px; }
h1, h2, h3, h4 { font-family: var(--display); letter-spacing: -.02em; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(34px, 4.6vw, 52px); font-weight: 700; line-height: 1.08; }
h2 { font-size: clamp(26px, 3.2vw, 36px); font-weight: 700; line-height: 1.12; }
h3 { font-size: clamp(22px, 2.4vw, 28px); font-weight: 600; line-height: 1.2; }
h4 { font-size: 17px; font-weight: 600; }
p { margin: 0; }

/* Üst */
.top { position: sticky; top: env(safe-area-inset-top, 0px); background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); z-index: 10; }
.top-row { display: flex; align-items: center; gap: 24px; padding-block: 14px; }
.brand img { display: block; height: 17px; width: auto; }
.nav { display: flex; gap: 22px; margin-left: 8px; flex: 1; }
.nav a { text-decoration: none; font-size: 15px; font-weight: 500; color: var(--ink-2); }
.nav a:hover, .nav a:focus-visible { color: var(--ink); }
.btn { display: inline-flex; align-items: center; text-decoration: none; font-size: 15px; font-weight: 600; padding: 10px 16px; border-radius: 8px; border: 1px solid transparent; white-space: nowrap; }
.btn-dark { background: var(--ink); color: var(--bg); }
.btn-dark:hover, .btn-dark:focus-visible { background: var(--accent); color: #fff; }
.link-arrow { text-decoration: none; font-weight: 600; color: var(--accent-ink); font-size: 15px; }
.link-arrow::after { content: " →"; }
.link-arrow:hover, .link-arrow:focus-visible { text-decoration: underline; }

/* Hero */
.hero { padding-block: clamp(48px, 8vw, 96px) clamp(32px, 5vw, 56px); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 40px 56px; align-items: center; }
.hero-text { max-width: 520px; }
.lede { font-size: clamp(17px, 1.5vw, 19px); color: var(--ink-2); margin: 18px 0 26px; max-width: 54ch; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }

/* Ürün çizimi */
.mock { margin: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); box-shadow: 0 30px 60px -30px rgba(10,37,64,.35), 0 2px 6px rgba(10,37,64,.06); overflow: hidden; }
.mock-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.mock-bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.mock-bar em { font-style: normal; font-size: 12px; color: var(--ink-3); margin-left: 8px; }
.mock-body { padding: 18px 18px 16px; display: grid; gap: 14px; }
.mock-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; }
.mock-label { font-size: 12px; color: var(--ink-3); }
.mock-big { font-family: var(--display); font-size: 30px; font-weight: 700; letter-spacing: -.02em; line-height: 1.1; font-variant-numeric: tabular-nums; }
.mock-big small { font-size: 13px; font-weight: 500; color: var(--ink-3); letter-spacing: 0; }
.mock-delta { font-weight: 600; color: var(--pos); font-variant-numeric: tabular-nums; text-align: right; }
.mock-delta small { display: block; font-weight: 400; color: var(--ink-3); font-size: 12px; }
.mock-chart { width: 100%; height: auto; display: block; }
.mock-rows { display: grid; gap: 8px; }
.mock-row { display: grid; grid-template-columns: 10px 1fr auto; grid-template-rows: auto 4px; column-gap: 10px; row-gap: 5px; align-items: center; font-size: 13.5px; }
.mock-row b { font-variant-numeric: tabular-nums; font-weight: 600; }
.mock-row .bar { grid-column: 2 / 4; height: 4px; border-radius: 2px; background: var(--line); position: relative; }
.mock-row .bar::after { content: ""; position: absolute; inset: 0; width: var(--w); border-radius: 2px; background: var(--accent); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-neg { background: var(--neg); } .dot-pos { background: var(--pos); } .dot-neu { background: var(--neu); }
.mock-alert { font-size: 13px; color: var(--ink-2); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.mock-pill { font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--neg); border: 1px solid currentColor; border-radius: 999px; padding: 1px 8px; }
.mock figcaption, .panel figcaption { font-size: 12px; color: var(--ink-3); padding: 8px 14px 10px; }

/* Kaynaklar */
.sources { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); padding-block: 22px; }
.source-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 14px; font-weight: 500; color: var(--ink-2); }

/* Ürünler */
.products { padding-block: clamp(56px, 8vw, 96px); }
.sub { color: var(--ink-2); max-width: 62ch; margin: 12px 0 0; font-size: 17px; }
.product { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 32px 64px; align-items: center; padding-block: clamp(40px, 6vw, 72px); border-bottom: 1px solid var(--line); }
.product:last-child { border-bottom: 0; }
.product-rev .product-text { order: 2; }
.product-text img { height: 20px; width: auto; display: block; margin-bottom: 14px; }
.tag { font-size: 13px; font-weight: 600; color: var(--ink-3); margin: 0 0 10px; }
.product-text h3 { margin-bottom: 12px; }
.product-text > p { color: var(--ink-2); max-width: 52ch; }
.checks { list-style: none; padding: 0; margin: 18px 0 20px; display: grid; gap: 8px; }
.checks li { padding-left: 24px; position: relative; color: var(--ink); font-size: 15px; }
.checks li::before { content: ""; position: absolute; left: 0; top: 7px; width: 12px; height: 7px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.panel { margin: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); box-shadow: 0 2px 6px rgba(10,37,64,.06); overflow: hidden; }
.mini { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.mini th { text-align: left; font-weight: 600; color: var(--ink-3); font-size: 12px; letter-spacing: .03em; text-transform: uppercase; padding: 10px 14px; border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.mini td { padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.mini tr:last-child td { border-bottom: 0; }
.mini td:first-child { font-weight: 600; white-space: nowrap; }
.chip { display: inline-block; font-size: 12px; font-weight: 500; padding: 2px 8px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--ink-2); white-space: nowrap; }
.chip-neg { color: var(--neg); border-color: color-mix(in srgb, var(--neg) 35%, var(--line)); }
.chip-pos { color: var(--pos); border-color: color-mix(in srgb, var(--pos) 35%, var(--line)); }
.phone { max-width: 380px; justify-self: center; padding: 14px; display: grid; gap: 10px; background: var(--bg-soft); }
.notif { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; font-size: 13.5px; }
.notif b { font-weight: 600; } .notif span { color: var(--ink-3); font-size: 12px; } .notif p { grid-column: 1 / -1; color: var(--ink-2); }
.notif.muted { opacity: .7; }

/* Nasıl çalışır */
.how { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: clamp(48px, 7vw, 80px); }
.steps { list-style: none; margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.steps li { display: grid; gap: 8px; align-content: start; }
.step-n { width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: var(--bg); font-size: 13px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.steps p { color: var(--ink-2); font-size: 15px; }

/* İletişim */
.contact { padding-block: clamp(56px, 8vw, 96px); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px 64px; align-items: center; }
.contact-grid p { color: var(--ink-2); margin-top: 12px; max-width: 50ch; }
.contact-card { border: 1px solid var(--line); border-radius: 12px; padding: 24px; display: grid; gap: 12px; justify-items: start; }
.mail { font-family: var(--display); font-size: clamp(20px, 2.4vw, 26px); font-weight: 600; letter-spacing: -.01em; text-decoration: none; }
.mail:hover, .mail:focus-visible { color: var(--accent-ink); }

/* Alt */
.foot { border-top: 1px solid var(--line); padding-block: 20px 36px; font-size: 13px; color: var(--ink-3); }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 20px; }
.foot nav { display: flex; gap: 18px; } .foot a { color: var(--ink-3); text-decoration: none; } .foot a:hover { color: var(--ink); text-decoration: underline; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 860px) {
  .hero-grid, .product, .contact-grid { grid-template-columns: 1fr; }
  .product-rev .product-text { order: 0; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .nav { display: none; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
  .top-row .btn { padding: 8px 12px; font-size: 14px; }
}