/* Minimal, modern tek-sayfa tasarım */
* {
  box-sizing: border-box;
}

:root {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.7);
  --border: rgba(255, 255, 255, 0.14);
  --primary: #7c5cff;
  --primary-2: #4cc9f0;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --radius-sm: 12px;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    "Noto Sans", "Liberation Sans", sans-serif;
  background: radial-gradient(1200px 600px at 15% 0%, rgba(124, 92, 255, 0.25), transparent),
    radial-gradient(900px 480px at 90% 10%, rgba(76, 201, 240, 0.18), transparent), var(--bg);
  color: var(--text);
  line-height: 1.55;
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  top: -50px;
  left: 0;
  padding: 10px 14px;
  background: #111827;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  transition: top 150ms ease;
  z-index: 1000;
}

.skip-link:focus {
  top: 14px;
  left: 14px;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 18, 32, 0.65);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.35), rgba(76, 201, 240, 0.22));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.brand-name {
  font-weight: 800;
  letter-spacing: 0.2px;
}

.nav-links {
  display: flex;
  gap: 16px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 650;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--text);
}

.hero {
  padding: 54px 0 24px;
}

.hero-inner {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: start;
}

.hero-copy h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 3.4vw, 3rem);
  line-height: 1.1;
}

.lead {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.small-muted {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.95rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 750;
  border: 1px solid var(--border);
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  border-color: rgba(124, 92, 255, 0.55);
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.85), rgba(76, 201, 240, 0.35));
}

.btn-ghost {
  background: transparent;
}

.btn-block {
  width: 100%;
}

.hero-card {
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
  padding: 18px 18px 16px;
}

.hero-card-top {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.pill {
  padding: 7px 10px;
  border-radius: 999px;
  font-weight: 750;
  font-size: 0.86rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
}

.pill-soft {
  border-color: rgba(76, 201, 240, 0.35);
  background: rgba(76, 201, 240, 0.11);
}

.hero-card-title {
  margin: 8px 0 12px;
  font-size: 1.15rem;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.checklist li {
  padding-left: 28px;
  position: relative;
  color: rgba(255, 255, 255, 0.86);
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(124, 92, 255, 0.18);
  border: 1px solid rgba(124, 92, 255, 0.35);
  color: rgba(255, 255, 255, 0.95);
}

.section {
  padding: 48px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.section h2 {
  margin: 0 0 12px;
  font-size: 1.6rem;
}

.section-lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1.05rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature,
.panel {
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.feature h3,
.panel h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.callout {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.75);
}

.steps {
  margin: 0;
  padding-left: 20px;
  color: rgba(255, 255, 255, 0.86);
}

.steps li {
  margin: 10px 0;
}

.download-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 22px;
}

.contact a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.35);
}

.contact a:hover {
  border-bottom-color: rgba(124, 92, 255, 0.8);
}

.site-footer {
  padding: 28px 0 40px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.25);
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.92);
  border-bottom-color: rgba(124, 92, 255, 0.7);
}

.muted {
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .download-row {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}