/* Nova Marketim landing — modern KOYU tema (18 Tem 2026, kullanıcı isteği):
   koyu lacivert-siyah zemin + canlı mavi vurgu + camsı kartlar; planotask'ın
   ferah/yuvarlak düzeni korunur. */
:root {
  --primary: #3b82f6;
  --primary-strong: #2563EB;
  --primary-dark: #1d4ed8;
  --bg: #0b1220;                 /* ana zemin */
  --bg-alt: #0e1729;             /* bölüm ayrımı */
  --card: #111c30;               /* kart zemini */
  --border: rgba(148, 163, 184, .16);
  --ink: #f1f5f9;                /* başlıklar */
  --text: #cbd5e1;
  --text-muted: #94a3b8;
  --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 11px 24px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  font-size: 0.95rem;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--primary-strong);
  color: #fff;
  box-shadow: 0 6px 22px rgba(59, 130, 246, .35);
}
.btn-primary:hover { background: var(--primary); }
.btn-ghost {
  border: 1.5px solid rgba(148, 163, 184, .35);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 15px 34px; font-size: 1.05rem; border-radius: 14px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 18, 32, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-icon { width: 32px; height: 32px; }
.brand-name { font-size: 1.22rem; letter-spacing: .2px; font-weight: 700; }
.brand-name strong { color: var(--primary); }
.nav-links {
  display: flex;
  gap: 26px;
  margin-left: auto;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 600;
}
.nav-links a:hover { color: var(--ink); }
.header-cta { margin-left: 8px; }
.header-login {
  margin-left: 4px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 700;
  padding: 10px 14px;
}
.header-login:hover { color: var(--primary); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(800px 400px at 75% -10%, rgba(37, 99, 235, .22), transparent 60%),
    radial-gradient(600px 320px at 15% 110%, rgba(37, 99, 235, .10), transparent 60%),
    linear-gradient(170deg, #0d1729 0%, var(--bg) 60%);
  color: var(--ink);
  padding: 100px 0 110px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-badge {
  display: inline-block;
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .35);
  color: #93c5fd;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5.2vw, 3.5rem);
  line-height: 1.12;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: #fff;
}
.hero .accent {
  background: linear-gradient(90deg, #60a5fa, #3b82f6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 660px;
  margin: 0 auto 36px;
  color: var(--text-muted);
  font-size: 1.12rem;
}
.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.86rem;
}

/* ---------- Sections ---------- */
section { padding: 84px 0; }
.section-title {
  text-align: center;
  font-size: 2.1rem;
  color: var(--ink);
  margin-bottom: 10px;
  font-weight: 800;
  letter-spacing: -0.3px;
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 48px;
}

/* ---------- Features ---------- */
.features { background: var(--bg); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(59, 130, 246, .45);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .35);
}
.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(59, 130, 246, .12);
  border: 1px solid rgba(59, 130, 246, .25);
  border-radius: 12px;
}
.feature-card h3 { color: var(--ink); margin-bottom: 8px; font-size: 1.08rem; font-weight: 700; }
.feature-card p { color: var(--text-muted); font-size: 0.93rem; }

/* ---------- Screens ---------- */
.screens { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.screen-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 28px;
}
.screen-card { text-align: left; margin: 0; }
.screen-card.wide { grid-column: 1 / -1; }
.screen-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid rgba(148, 163, 184, .25);
  box-shadow: 0 12px 34px rgba(0, 0, 0, .45);
  background: #fff;
  cursor: zoom-in;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.screen-card img:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, .5);
  box-shadow: 0 18px 44px rgba(0, 0, 0, .55);
}
.screen-card figcaption { margin-top: 12px; font-size: 0.92rem; }
.screen-card figcaption strong {
  display: block;
  color: var(--ink);
  font-size: 1.02rem;
  margin-bottom: 3px;
  font-weight: 700;
}
.screen-card figcaption span { color: var(--text-muted); }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(2, 6, 14, .94);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 3vh 3vw;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 10px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, .6);
}
.lightbox-close {
  position: absolute;
  top: 14px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* ---------- Download ---------- */
.download { background: var(--bg); }
.download-inner { text-align: center; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
  max-width: 860px;
  margin: 0 auto;
}
.download-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.download-card h3 { color: var(--ink); margin-bottom: 8px; font-size: 1.15rem; font-weight: 700; }
.download-card p { color: var(--text-muted); font-size: 0.93rem; margin-bottom: 18px; }
.download-card .btn { margin-top: auto; }
.download-icon { font-size: 2.6rem; margin-bottom: 8px; }
.btn-download {
  background: #f8fafc;
  color: #0f172a;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .35);
}
.btn-download:hover { background: #e2e8f0; }
.download-note {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---------- Why ---------- */
.why { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.why-list {
  list-style: none;
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.why-list li {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
}
.why-list strong {
  display: block;
  color: var(--ink);
  margin-bottom: 2px;
  font-weight: 700;
}
.why-list span { color: var(--text-muted); font-size: 0.93rem; }

/* ---------- CTA banner ---------- */
.cta-banner {
  background:
    radial-gradient(500px 260px at 20% -30%, rgba(255, 255, 255, .14), transparent 60%),
    linear-gradient(140deg, var(--primary-strong) 0%, var(--primary-dark) 100%);
  color: #fff;
  text-align: center;
  border-radius: 24px;
  max-width: 1072px;
  margin: 0 auto 84px;
  padding: 64px 24px;
  box-shadow: 0 24px 60px rgba(37, 99, 235, .25);
}
.cta-banner h2 { font-size: 2rem; margin-bottom: 8px; font-weight: 800; }
.cta-banner p { color: rgba(255, 255, 255, .85); margin-bottom: 28px; }
.cta-banner .btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
}
.cta-banner .btn-primary:hover { background: #eff6ff; }
.cta-banner .btn-ghost { border-color: rgba(255, 255, 255, .55); color: #fff; background: transparent; }
.cta-banner .btn-ghost:hover { border-color: #fff; color: #fff; }

/* ---------- Footer ---------- */
.site-footer {
  background: #070d18;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  padding: 44px 0;
  text-align: center;
}
.footer-contact {
  display: flex;
  gap: 26px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.footer-contact a { color: #93c5fd; text-decoration: none; font-weight: 600; }
.footer-contact a:hover { text-decoration: underline; }
.footer-copy { font-size: 0.85rem; }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: #0d1729;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 18px 24px;
    gap: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; margin-left: auto; }
  .header-cta { margin-left: 0; }
  .header-login { display: none; }
  .hero { padding: 68px 0 80px; }
  .cta-banner { border-radius: 0; margin-bottom: 0; }
}