/* ============================================================
   Spambil — tasarım sistemi
   Kurumsal güvenlik ürünü: koyu zemin + koruyucu teal, net CTA'lar
   ============================================================ */

:root {
  --ink: #0b1220;
  --ink-soft: #17233b;
  --ink-mute: #5b6b85;
  --paper: #ffffff;
  --cloud: #f5f8f8;
  --mist: #e9f1f0;
  --line: #dbe6e4;

  --brand: #0d9488;
  --brand-deep: #0a6d64;
  --brand-soft: #e3f7f4;
  --brand-bright: #14b8a6;

  --danger: #f43f5e;
  --danger-soft: #fef1f3;
  --gold: #f5b942;

  --good: #12875a;
  --good-soft: #e6f6ee;

  --grad-hero: radial-gradient(1100px 560px at 85% -10%, rgba(20, 184, 166, 0.28), transparent 60%),
    radial-gradient(760px 460px at 5% 105%, rgba(244, 63, 94, 0.12), transparent 55%),
    linear-gradient(165deg, #071019 0%, #0b1220 55%, #060c14 100%);
  --grad-brand: linear-gradient(120deg, #0d9488 0%, #14b8a6 100%);

  --font-head: "Sora", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 26px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(6, 12, 20, 0.06), 0 2px 8px rgba(6, 12, 20, 0.05);
  --shadow-md: 0 4px 14px rgba(6, 12, 20, 0.08), 0 20px 44px rgba(6, 12, 20, 0.1);
  --shadow-brand: 0 12px 30px rgba(13, 148, 136, 0.32);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3 { font-family: var(--font-head); color: var(--ink); letter-spacing: -0.01em; }

.container { width: 100%; max-width: 76rem; margin: 0 auto; padding-inline: 20px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 14px; }
.brand-row { display: flex; align-items: center; gap: 10px; }
.brand-row img { width: 30px; height: 30px; }
.brand-name { font-family: var(--font-head); font-weight: 800; font-size: 1.15rem; color: #fd4902; }
.brand-name em { color: var(--ink); font-style: normal; }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 0.92rem; font-weight: 600; color: var(--ink-mute); }
.nav-links a:hover { color: var(--brand); }
.nav-cta { display: flex; gap: 10px; align-items: center; }

@media (max-width: 760px) {
  .nav-links { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border: none; border-radius: var(--radius-sm);
  font-weight: 700; font-size: 0.95rem; cursor: pointer;
  transition: transform 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out), background 0.15s var(--ease-out);
}
.btn-brand { background: var(--grad-brand); color: #fff; box-shadow: var(--shadow-brand); }
.btn-brand:hover { transform: translateY(-1px); box-shadow: 0 16px 36px rgba(13,148,136,0.4); }
.btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); }
.btn-ghost:hover { background: var(--mist); }
.btn-light { background: #fff; color: var(--ink); }
.btn-light:hover { transform: translateY(-1px); }
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }

/* ---------- Hero ---------- */
.hero { background: var(--grad-hero); color: #fff; padding: 64px 0 90px; position: relative; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14);
  padding: 7px 16px; border-radius: var(--radius-pill); font-size: 0.82rem; font-weight: 600;
  color: #b7f5ed; margin-bottom: 22px;
}
.hero h1 {
  color: #fff; font-size: clamp(2.1rem, 5vw, 3.4rem); line-height: 1.12; font-weight: 800;
  max-width: 780px; margin-bottom: 20px;
}
.hero h1 span { background: linear-gradient(100deg, #5eead4, #14b8a6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: #b9c6d6; font-size: 1.1rem; max-width: 620px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 36px; flex-wrap: wrap; }
.hero-stat b { display: block; font-family: var(--font-head); font-size: 1.7rem; color: #fff; }
.hero-stat span { font-size: 0.85rem; color: #8fa0b8; }

/* ---------- Trust strip ---------- */
.trust-strip { background: var(--cloud); border-bottom: 1px solid var(--line); padding: 18px 0; }
.trust-strip .container { display: flex; align-items: center; justify-content: center; gap: 36px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.86rem; font-weight: 600; color: var(--ink-mute); }
.trust-item svg { width: 18px; height: 18px; color: var(--brand); flex-shrink: 0; }

/* ---------- Section ---------- */
.section { padding: 84px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.eyebrow { display: inline-block; color: var(--brand-deep); font-weight: 700; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 12px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: 14px; }
.section-head p { color: var(--ink-mute); font-size: 1.05rem; }

/* ---------- Feature grid ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 860px) { .feature-grid { grid-template-columns: 1fr; } }
.feature-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; box-shadow: var(--shadow-sm);
}
.feature-card .icon-wrap {
  width: 46px; height: 46px; border-radius: 14px; background: var(--brand-soft);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.feature-card .icon-wrap svg { width: 24px; height: 24px; color: var(--brand-deep); }
.feature-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.feature-card p { color: var(--ink-mute); font-size: 0.92rem; }

/* ---------- Split (panel showcase) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.split .visual {
  background: var(--ink); border-radius: var(--radius-lg); padding: 8px;
  box-shadow: var(--shadow-md);
}
.split .visual-inner { background: var(--paper); border-radius: 14px; overflow: hidden; }
.mock-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: 0.82rem; }
.mock-row:last-child { border-bottom: none; }
.mock-pill { padding: 3px 10px; border-radius: var(--radius-pill); font-size: 0.72rem; font-weight: 700; }
.mock-pill.deliver { background: var(--brand-soft); color: var(--brand-deep); }
.mock-pill.block { background: var(--danger-soft); color: var(--danger); }
.split ul.check-list li { display: flex; gap: 12px; margin-bottom: 16px; align-items: flex-start; }
.split ul.check-list svg { width: 20px; height: 20px; color: var(--brand); flex-shrink: 0; margin-top: 2px; }
.split ul.check-list b { color: var(--ink); }
.split ul.check-list span { color: var(--ink-mute); font-size: 0.92rem; }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
@media (max-width: 940px) { .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; } }
.price-card {
  background: var(--paper); border: 1.5px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; display: flex; flex-direction: column;
}
.price-card.featured { border-color: var(--brand); box-shadow: var(--shadow-brand); position: relative; }
.price-card.featured .featured-tag {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--grad-brand); color: #fff; font-size: 0.74rem; font-weight: 800;
  padding: 5px 16px; border-radius: var(--radius-pill);
}
.price-card h3 { font-size: 1.15rem; margin-bottom: 6px; }
.price-card .desc { color: var(--ink-mute); font-size: 0.86rem; margin-bottom: 20px; }
.price-card .amount { font-family: var(--font-head); font-size: 2.3rem; font-weight: 800; color: var(--ink); }
.price-card .amount span { font-size: 0.95rem; font-weight: 600; color: var(--ink-mute); }
.price-card .period { color: var(--ink-mute); font-size: 0.82rem; margin-bottom: 24px; }
.price-card ul { margin-bottom: 26px; flex: 1; }
.price-card ul li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 12px; }
.price-card ul li svg { width: 17px; height: 17px; color: var(--brand); flex-shrink: 0; margin-top: 2px; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-item summary { cursor: pointer; font-weight: 700; color: var(--ink); font-size: 1rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.4rem; color: var(--brand); font-weight: 400; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin-top: 12px; color: var(--ink-mute); font-size: 0.92rem; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--grad-hero); border-radius: var(--radius-lg); padding: 56px 40px; text-align: center; color: #fff; }
.cta-band h2 { color: #fff; font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: 14px; }
.cta-band p { color: #b9c6d6; margin-bottom: 28px; max-width: 480px; margin-inline: auto; }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: #8fa0b8; padding: 56px 0 28px; }
.footer .brand-name em { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 40px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer h4 { color: #fff; font-size: 0.85rem; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; font-size: 0.88rem; }
.footer ul li a:hover { color: #fff; }
.footer p.tag { font-size: 0.88rem; max-width: 280px; margin-top: 12px; color: #6b7d96; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; font-size: 0.8rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

@media (max-width: 500px) {
  .section { padding: 56px 0; }
  .price-card.featured { transform: none; }
}