/* Naz Edu sitesi: uygulamanın renkleri (internal/ui/screens/theme.go, "nazedu" teması) ve yazı tipi (Lexend, OFL). */
@font-face { font-family: "Lexend"; src: url("/assets/fonts/Lexend-Regular-Sub.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Lexend"; src: url("/assets/fonts/Lexend-Bold-Sub.ttf") format("truetype"); font-weight: 700; font-display: swap; }

:root {
  --bg: #FAF2EA; --panel: #FFFCFA; --border: #E0DAD3; --ink: #2F2A25; --muted: #625950;
  --accent: #BE471B; --accent-ink: #FFFFFF; --teal: #07857E; --blue: #0577C5;
  --radius: 18px; --shadow: 0 1px 2px rgba(47,42,37,.06), 0 8px 28px rgba(47,42,37,.08);
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 "Lexend", "Segoe UI", system-ui, sans-serif; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 8px; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--panel); padding: 8px 14px; border-radius: 10px; }
.skip:focus { left: 12px; z-index: 10; }

.top { max-width: var(--max); margin: 0 auto; padding: 22px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand img { width: 170px; height: auto; }
.top nav { display: flex; align-items: center; gap: 22px; }
.top nav a { color: var(--ink); text-decoration: none; font-size: 15px; }
.top nav a:hover { color: var(--accent); }
.lang { font: inherit; font-size: 14px; color: var(--ink); background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 8px 14px; cursor: pointer; }
.lang:hover { border-color: var(--muted); }

main { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 56px 0; }
h1 { font-size: clamp(34px, 4.6vw, 54px); line-height: 1.12; margin: 0 0 18px; letter-spacing: -.01em; }
h2 { font-size: clamp(26px, 3vw, 34px); margin: 0 0 10px; }
h3 { font-size: 19px; margin: 0 0 6px; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.sub { color: var(--muted); margin: 0 0 28px; }

.hero { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center; padding-top: 28px; }
.hero-shot { margin: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); background: var(--panel); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 14px; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 22px; border-radius: 14px; font-weight: 700; font-size: 17px; text-decoration: none; color: var(--ink); background: var(--panel); border: 1px solid var(--border); }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.meta { color: var(--muted); font-size: 14px; margin: 0; }

.install .video { margin: 0 0 32px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); background: var(--panel); }
.install .video video { width: 100%; height: auto; display: block; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.steps li { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.steps .num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--accent); color: var(--accent-ink); font-weight: 700; margin-bottom: 12px; }
.steps p { margin: 0; color: var(--muted); font-size: 16px; }

.features .grid { list-style: none; margin: 24px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.features li { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.features li h3::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--teal); margin-right: 10px; vertical-align: 2px; }
.features li:nth-child(3n+2) h3::before { background: var(--accent); }
.features li:nth-child(3n) h3::before { background: var(--blue); }
.features p { margin: 0; color: var(--muted); font-size: 16px; }

.privacy ul { margin: 18px 0 0; padding-left: 22px; color: var(--muted); max-width: 52em; }
.privacy li { margin-bottom: 8px; }

.foot { max-width: var(--max); margin: 24px auto 0; padding: 28px 24px 40px; border-top: 1px solid var(--border); color: var(--muted); font-size: 15px; }
.foot p { margin: 0 0 8px; }
.foot .small { font-size: 13px; }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .features .grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .top nav a { display: none; }
  .steps, .features .grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }