/* =============================================================
   Ceviz 3D Viewer — Landing styles
   Yapı/komponent dili app.cevizbiotech.com referansından; renkler
   app_colors.dart (cyan + turuncu) paletine çekildi. Framework yok.
   ============================================================= */

/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ===== TOKENS (app_colors.dart) ===== */
:root {
  /* Backgrounds — koyu navy/teal katmanlar */
  --bg-0: #02080F;
  --bg-1: #04101C;
  --bg-2: #07182A;
  --bg-3: #0A2238;

  /* Surfaces — Ceviz cam (glass) imzası */
  --surface: rgba(8, 22, 38, 0.55);        /* glassFill */
  --surface-strong: rgba(10, 28, 48, 0.74);

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --glass-stroke: rgba(150, 210, 235, 0.18);
  --glass-stroke-strong: rgba(150, 210, 235, 0.28);

  /* Text — beyaz alpha hiyerarşisi */
  --text-1: #FFFFFF;
  --text-2: rgba(255, 255, 255, 0.72);
  --text-3: rgba(255, 255, 255, 0.50);

  /* Accent — cyan (marka/bilgi) */
  --accent: #7FE0E8;
  --accent-soft: #A6ECF2;
  --accent-deep: #4FC3D6;
  --violet: #5B6EE8;
  --glow: 127, 224, 232;   /* rgba(var(--glow), 0.x) */

  /* CTA — turuncu */
  --orange: #FF8A2B;
  --orange-2: #FF7016;
  --orange-glow: 255, 138, 43;

  /* Fonts */
  --display: 'Bricolage Grotesque', system-ui, sans-serif;
  --serif: 'Instrument Serif', Georgia, serif;

  --container: 1200px;
}

/* ===== BASE ===== */
body {
  font-family: 'Manrope', system-ui, sans-serif;
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

/* ===== ATMOSPHERE ===== */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  pointer-events: none;
}
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 15% 0%, rgba(79, 195, 214, 0.16), transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 30%, rgba(91, 110, 232, 0.12), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(127, 224, 232, 0.07), transparent 70%);
}
/* İnce film greni — düz gradient'lere doku katar (referanstaki SVG turbulence) */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2' /><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.04 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
}

/* ===== LAYOUT ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.005em;
  transition: transform 0.15s, background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--orange-2));
  box-shadow: 0 4px 20px rgba(var(--orange-glow), 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(var(--orange-glow), 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ghost {
  color: var(--text-1);
  border: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.btn-ghost:hover {
  background: var(--surface-strong);
  border-color: var(--border-strong);
}
.btn-arrow {
  transition: transform 0.2s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.btn:hover .btn-arrow {
  transform: translateX(3px);
}
.btn-lg {
  font-size: 15px;
  padding: 13px 24px;
}
.btn-wide {
  flex: 1;
  min-width: 200px;
  justify-content: center;
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-bottom: 1px solid transparent;
  transition: backdrop-filter 0.3s, background 0.3s, border-color 0.3s;
}
.nav.scrolled {
  background: rgba(2, 8, 15, 0.72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom-color: var(--glass-stroke);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav-logo {
  display: block;
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.nav-logo:hover {
  transform: scale(1.02);
}
.nav-logo img {
  height: 38px;
  display: block;
}
.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  color: var(--text-2);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.nav-links a:hover {
  color: var(--text-1);
}
.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-btn {
  padding: 9px 16px;
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  width: 32px;
  height: 32px;
  position: relative;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-1);
  position: absolute;
  left: 5px;
  transition: all 0.3s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.nav-toggle span:nth-child(1) { top: 11px; }
.nav-toggle span:nth-child(2) { top: 16px; }
.nav-toggle span:nth-child(3) { top: 21px; }
.nav-toggle.active span:nth-child(1) { top: 16px; transform: rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { top: 16px; transform: rotate(-45deg); }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 49;
  background: rgba(2, 8, 15, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s cubic-bezier(0.2, 0.7, 0.2, 1), visibility 0.3s;
}
.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}
.mobile-menu-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-align: center;
}
.mobile-menu-links a {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  color: var(--text-1);
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.mobile-menu-links a:hover {
  color: var(--accent);
}
.mobile-menu-cta {
  padding: 14px 32px;
  font-size: 16px;
}

/* ===== REVEAL ===== */
section[id] {
  scroll-margin-top: 110px;
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HERO ===== */
.hero {
  padding: 172px 0 112px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 72px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--glass-stroke);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 28px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(var(--glow), 0.6);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(var(--glow), 0.5); }
  70%  { box-shadow: 0 0 0 8px rgba(var(--glow), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--glow), 0); }
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(40px, 5.4vw, 72px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  color: var(--text-1);
}
.hero h1 em {
  font-family: inherit;
  font-style: normal;
  font-weight: 500;
  color: var(--accent-soft);
}
.hero .lead {
  font-size: 18px;
  line-height: 1.68;
  color: var(--text-2);
  max-width: 560px;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero-trust {
  display: flex;
  gap: 20px 28px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.trust-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-3);
}
.trust-item svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Hero visual */
.hero-viz {
  position: relative;
  aspect-ratio: 1 / 1.08;
  border-radius: 24px;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(135deg, rgba(79, 195, 214, 0.13), rgba(4, 16, 28, 0.82));
  border: 1px solid var(--glass-stroke);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
.hero-viz model-viewer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
  background: transparent;
  --poster-color: transparent;
  /* İki viewer üst üste durur; aktif olan görünür. Format değişiminde
     crossfade ile geçilir → boş kare / titreme olmadan. */
  opacity: 0;
  transition: opacity 0.7s ease;
}
.hero-viz model-viewer.is-active { opacity: 1; }
.viz-tag-top {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(2, 8, 15, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  font-size: 11px;
  color: var(--text-1);
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.viz-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #6BFFB0;
  box-shadow: 0 0 8px rgba(107, 255, 176, 0.6);
}
.viz-tag-format {
  color: var(--accent-soft);
  font-weight: 600;
}
.viz-meta {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  z-index: 2;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
  padding: 12px 18px;
  border-radius: 12px;
  background: rgba(2, 8, 15, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
}
.viz-meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.viz-meta-key {
  font-size: 11px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.viz-meta-val {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-1);
}
.viz-corner {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--accent);
  opacity: 0.5;
  z-index: 1;
  pointer-events: none;
}
.viz-corner-tl { top: 12px; left: 12px; border-top: 1.5px solid; border-left: 1.5px solid; }
.viz-corner-tr { top: 12px; right: 12px; border-top: 1.5px solid; border-right: 1.5px solid; }
.viz-corner-bl { bottom: 12px; left: 12px; border-bottom: 1.5px solid; border-left: 1.5px solid; }
.viz-corner-br { bottom: 12px; right: 12px; border-bottom: 1.5px solid; border-right: 1.5px solid; }

/* ===== CONVERSION SCAN =====
   Modeli "ham mesh → STL" dönüşümü gibi tarar. Tarama çizgisinin altı
   (henüz dönüşmemiş) tel-kafes, üstü (dönüşmüş) temiz katı yüzey kalır.
   z-index:1 → corner'larla aynı katman, viz-tag/meta (z-2) altında durur. */
.viz-scan {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.viz-scan-grid {
  position: absolute;
  inset: 0;
  /* ince cyan tel-kafes = ham mesh hissi */
  background-image:
    linear-gradient(rgba(var(--glow), 0.20) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--glow), 0.20) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0;
  /* taranan çizginin altı görünür; çizgi indikçe üstten temizlenir */
  animation: vizScanGrid 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
.viz-scan-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  opacity: 0;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-soft), var(--accent), transparent);
  box-shadow: 0 0 12px 2px rgba(var(--glow), 0.55), 0 0 40px 8px rgba(var(--glow), 0.22);
  animation: vizScanLine 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
@keyframes vizScanLine {
  0%, 5%  { top: 0%;   opacity: 0; }
  9%      { opacity: 1; }
  44%     { top: 100%; opacity: 1; }
  48%     { top: 100%; opacity: 0; }
  100%    { top: 100%; opacity: 0; }
}
@keyframes vizScanGrid {
  0%      { clip-path: inset(0 0 0 0);    opacity: 0; }
  7%      { clip-path: inset(0 0 0 0);    opacity: 0.9; }
  44%     { clip-path: inset(100% 0 0 0); opacity: 0.9; }
  50%     { clip-path: inset(100% 0 0 0); opacity: 0; }
  /* dönüşüm:bekleme — sonra opacity:0 iken clip resetlenir (sıçrama görünmez) */
  100%    { clip-path: inset(100% 0 0 0); opacity: 0; }
}
/* Tarama bitince "STL" çıktısı parlar — dönüşümün tamamlandığını vurgular */
.viz-meta-val--out {
  animation: vizConverted 6s ease-out infinite;
}
@keyframes vizConverted {
  0%, 40%  { color: var(--text-1); text-shadow: none; }
  50%      { color: var(--accent-soft); text-shadow: 0 0 14px rgba(var(--glow), 0.7); }
  70%, 100% { color: var(--text-1); text-shadow: none; }
}
@media (prefers-reduced-motion: reduce) {
  .viz-scan { display: none; }
  .viz-meta-val--out { animation: none; }
}

/* ===== SECTIONS ===== */
.section {
  padding: 112px 0;
  position: relative;
}
.section-head {
  margin-bottom: 56px;
  max-width: 720px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--display);
  font-size: clamp(32px, 3.8vw, 52px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--text-1);
  margin-bottom: 20px;
}
.section-title em {
  font-family: inherit;
  font-style: normal;
  font-weight: 500;
  color: var(--accent-soft);
}
.section-sub {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.6;
  max-width: 640px;
}

/* ===== FEATURES (Özellikler) ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.feature-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--glass-stroke);
  border-radius: 20px;
  padding: 32px;
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.3s, background 0.3s;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--glass-stroke-strong);
  background: var(--surface-strong);
}
.feature-card.featured {
  background: linear-gradient(160deg, rgba(127, 224, 232, 0.10), var(--surface));
  border-color: var(--border-strong);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(var(--glow), 0.16), rgba(var(--glow), 0.05));
  border: 1px solid rgba(var(--glow), 0.24);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent);
}
.feature-icon svg {
  width: 22px;
  height: 22px;
}
.feature-card h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text-1);
  margin-bottom: 12px;
  line-height: 1.2;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-2);
  line-height: 1.6;
}

/* Roadmap (Yakında) kartları — çalışan özelliklerden ayrışsın diye soluk + kesik çizgi */
.feature-card.roadmap {
  background: rgba(8, 22, 38, 0.32);
  border-style: dashed;
  border-color: var(--border);
}
.feature-card.roadmap .feature-icon {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border);
  color: var(--text-3);
}
.feature-card.roadmap h3 {
  color: var(--text-2);
}
.soon-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-soft);
  background: rgba(127, 224, 232, 0.10);
  border: 1px solid rgba(127, 224, 232, 0.28);
}

/* ===== PRICING (Fiyatlandırma) ===== */
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--glass-stroke);
  border-radius: 20px;
  padding: 32px 28px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.3s;
}
.plan:hover {
  border-color: var(--glass-stroke-strong);
}
.plan.featured {
  border: 1px solid transparent;
  background:
    linear-gradient(var(--bg-2), var(--bg-2)) padding-box,
    linear-gradient(135deg, var(--accent), var(--violet)) border-box;
  box-shadow: 0 24px 60px rgba(79, 195, 214, 0.14);
}
.plan-badge {
  position: absolute;
  top: -12px;
  left: 28px;
  height: 24px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #fff;
  background: linear-gradient(135deg, var(--orange), var(--orange-2));
}
.plan-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-2);
}
.plan-price {
  margin: 14px 0 4px;
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.03em;
  font-size: 40px;
  color: var(--text-1);
}
.plan-price .per {
  font-family: 'Manrope', sans-serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--text-3);
}
.plan-sub {
  font-size: 13px;
  color: var(--text-3);
  min-height: 18px;
}
.plan-feats {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 12px;
  flex: 1;
}
.plan-feats li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-2);
}
.plan .btn {
  justify-content: center;
}
.check {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(var(--glow), 0.15);
  border: 1px solid rgba(var(--glow), 0.3);
  position: relative;
  flex-shrink: 0;
}
.check::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 3px;
  width: 4px;
  height: 7px;
  border-right: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(45deg);
}

/* ===== SECURITY / HAKKINDA ===== */
.security-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: start;
}
.security-content {
  position: sticky;
  top: 100px;
}
.security-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 28px;
}
.badge {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--glass-stroke);
  font-size: 12px;
  color: var(--text-2);
  font-weight: 500;
}
.security-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--glass-stroke);
  border-radius: 16px;
  padding: 28px;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: border-color 0.3s, background 0.3s;
}
.stat-card:hover {
  border-color: var(--glass-stroke-strong);
  background: var(--surface-strong);
}
.stat-value {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--accent-soft);
  line-height: 1.1;
}
.stat-label {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.5;
}

/* ===== CTA Band ===== */
.section-cta {
  padding: 72px 0 120px;
}
.cta-band {
  background: linear-gradient(135deg, rgba(79, 195, 214, 0.12), rgba(91, 110, 232, 0.08));
  border: 1px solid var(--glass-stroke);
  border-radius: 24px;
  max-width: 980px;
  margin: 0 auto;
  padding: 80px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(var(--glow), 0.12), transparent 60%);
  pointer-events: none;
}
.cta-band h2 {
  font-family: var(--display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text-1);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cta-band h2 em {
  font-family: inherit;
  font-style: normal;
  font-weight: 500;
  color: var(--accent-soft);
}
.cta-band p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.cta-actions .btn-wide {
  flex: 0 1 240px;
}

/* ===== FOOTER ===== */
.footer {
  padding: 80px 0 40px;
  margin-top: 120px;
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}
.footer-brand p {
  color: var(--text-3);
  font-size: 14px;
  line-height: 1.6;
  margin-top: 16px;
  max-width: 320px;
}
.footer-logo {
  height: 38px;
  display: block;
}
.footer-col h5 {
  font-family: var(--display);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 10px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-3);
  display: inline-block;
  transition: color 0.2s, transform 0.25s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.footer-col a:hover {
  color: var(--text-1);
  transform: translateX(2px);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-3);
  font-size: 13px;
  gap: 24px;
  flex-wrap: wrap;
}
/* İmza: LinkedIn linki + shimmer. Font diğer Ceviz siteleriyle tutarlı (Manrope). */
.by-ozyurt {
  display: inline-block; /* anchor inline → transform için blokvari kutu gerek */
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: linear-gradient(
    100deg,
    var(--text-3) 0%,
    var(--text-3) 38%,
    #ffffff 50%,
    var(--accent-soft) 58%,
    var(--text-3) 70%,
    var(--text-3) 100%
  );
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: ozyurt-shimmer 3.6s linear infinite;
  transition: filter 0.3s, transform 0.3s;
}
.by-ozyurt:hover {
  filter: drop-shadow(0 0 10px rgba(var(--glow), 0.7));
  transform: translateY(-1px);
}
@keyframes ozyurt-shimmer {
  0%   { background-position: 160% 0; }
  100% { background-position: -60% 0; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .nav-inner { padding: 14px 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta .nav-btn { display: none; }

  section[id] { scroll-margin-top: 92px; }
  .hero { padding: 140px 0 80px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  /* width:100% şart — margin:auto stretch'i iptal ettiğinden, açık genişlik
     olmadan grid item içeriğe (model-viewer = 0) çöküp aspect-ratio'yu da
     0 yükseklik yapıyordu. */
  .hero-viz { width: 100%; max-width: 480px; margin: 0 auto; aspect-ratio: 1; order: -1; }
  .hero-trust { gap: 14px 18px; }

  .section { padding: 80px 0; }
  .section-head { margin-bottom: 48px; }

  .feature-grid { grid-template-columns: 1fr 1fr; }
  .price-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .security-layout { grid-template-columns: 1fr; gap: 48px; }
  .security-content { position: static; }
  .security-stats { grid-template-columns: 1fr 1fr; }

  .cta-band { max-width: none; padding: 56px 32px; }
  .section-cta { padding: 40px 0 80px; }

  .footer { padding: 60px 0 32px; margin-top: 80px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px 32px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 600px) {
  section[id] { scroll-margin-top: 86px; }
  .feature-grid { grid-template-columns: 1fr; }
  .security-stats { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .hero-trust { flex-direction: column; align-items: flex-start; }
  .viz-meta { gap: 10px; padding: 10px 14px; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .pulse { animation: none; }
  .by-ozyurt { animation: none; }
}