/* =========================================================
   HELM I — STN Technologies
   Dark + neon cyan theme. 3D, glassmorphism, animated bg.
   ========================================================= */

:root {
  --bg: #050810;
  --bg-2: #0a0e1a;
  --bg-3: #0f1525;
  --surface: rgba(15, 22, 38, 0.6);
  --surface-2: rgba(20, 28, 48, 0.85);
  --border: rgba(0, 229, 255, 0.18);
  --border-strong: rgba(0, 229, 255, 0.45);

  --text: #e7eefc;
  --text-dim: #9aa7c0;
  --text-mute: #6c7a96;

  --neon: #00e5ff;
  --neon-2: #00aaff;
  --blue: #0066ff;
  --indigo: #4338ff;
  --accent: #00ffd1;

  --grad-neon: linear-gradient(135deg, #00e5ff 0%, #0066ff 100%);
  --grad-neon-2: linear-gradient(135deg, #00ffd1 0%, #00aaff 60%, #4338ff 100%);
  --grad-bg: radial-gradient(1200px 800px at 80% -10%, rgba(0, 102, 255, 0.18), transparent 60%),
             radial-gradient(900px 600px at -10% 30%, rgba(0, 229, 255, 0.14), transparent 55%),
             linear-gradient(180deg, #050810 0%, #060a16 100%);

  --shadow-neon: 0 0 24px rgba(0, 229, 255, 0.45), 0 0 60px rgba(0, 102, 255, 0.25);
  --shadow-card: 0 24px 60px -20px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255, 255, 255, 0.03) inset;

  --radius: 16px;
  --radius-lg: 24px;

  --container: 1200px;

  --t-fast: 180ms cubic-bezier(.4,0,.2,1);
  --t: 320ms cubic-bezier(.4,0,.2,1);
  --t-slow: 600ms cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--grad-bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,229,255,.08), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--neon); }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

/* =========================================================
   ANIMATED BACKGROUND
   ========================================================= */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 0%, transparent 75%);
  pointer-events: none;
  z-index: 0;
  animation: gridMove 30s linear infinite;
}
@keyframes gridMove {
  from { background-position: 0 0, 0 0; }
  to { background-position: 60px 60px, 60px 60px; }
}
.bg-glow {
  position: fixed;
  width: 700px; height: 700px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  animation: float 18s ease-in-out infinite;
}
.bg-glow--1 {
  background: radial-gradient(circle, var(--neon), transparent 70%);
  top: -200px; left: -200px;
}
.bg-glow--2 {
  background: radial-gradient(circle, var(--blue), transparent 70%);
  bottom: -200px; right: -200px;
  animation-delay: -9s;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(60px, -40px); }
}
#smoke-canvas {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.55;
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  transition: all var(--t);
  position: relative;
  white-space: nowrap;
}
.btn--lg { padding: 16px 28px; font-size: 15px; }
.btn--primary {
  background: var(--grad-neon);
  color: #001018;
  box-shadow: 0 10px 30px -10px rgba(0,229,255,.6), 0 0 0 1px rgba(0,229,255,.25) inset;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -10px rgba(0,229,255,.8), 0 0 0 1px rgba(0,229,255,.5) inset;
  color: #001018;
}
.btn--ghost {
  background: rgba(255,255,255,.02);
  color: var(--text);
  border-color: var(--border-strong);
  backdrop-filter: blur(10px);
}
.btn--ghost:hover {
  background: rgba(0,229,255,.08);
  border-color: var(--neon);
  color: var(--text);
}

/* =========================================================
   NAVIGATION
   ========================================================= */
.nav {
  position: sticky; top: 0;
  z-index: 100;
  backdrop-filter: blur(18px);
  background: rgba(5, 8, 16, 0.72);
  border-bottom: 1px solid rgba(255,255,255,.04);
  transition: all var(--t);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(5, 8, 16, 0.92); }
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
  gap: 24px;
}
.nav__logo {
  display: flex; align-items: center; gap: 12px;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 14px;
}
.logo-img {
  height: 28px;
  width: auto;
  display: block;
  /* Logo orijinalde lacivert — beyaza çevir + neon parıltı */
  filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(0, 229, 255, 0.55));
  transition: filter var(--t);
}
.nav__logo:hover .logo-img {
  filter: brightness(0) invert(1) drop-shadow(0 0 14px rgba(0, 229, 255, 0.9));
}
.logo-img--lg {
  height: 42px;
}
.logo-divider {
  width: 1px; height: 18px;
  background: var(--border-strong);
}
.logo-text {
  color: var(--text);
}
.logo-text em {
  font-style: normal;
  color: var(--neon);
  text-shadow: 0 0 12px rgba(0,229,255,.6);
}

.nav__links { display: flex; gap: 28px; }
.nav__links a {
  font-size: 14px;
  color: var(--text-dim);
  font-weight: 500;
  position: relative;
}
.nav__links a:hover { color: var(--text); }
.nav__links a::after {
  content: '';
  position: absolute; bottom: -6px; left: 0;
  height: 2px; width: 0;
  background: var(--grad-neon);
  transition: width var(--t);
  border-radius: 1px;
}
.nav__links a:hover::after { width: 100%; }

.nav__cta { display: flex; align-items: center; gap: 12px; }
.nav__phone {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 14px;
  color: var(--neon);
}
.nav__primary { padding: 10px 18px; font-size: 13px; }

.nav__toggle {
  display: none;
  width: 40px; height: 40px;
  background: transparent; border: 1px solid var(--border);
  border-radius: 10px;
  flex-direction: column; justify-content: center; align-items: center;
  gap: 4px;
}
.nav__toggle span {
  width: 18px; height: 2px;
  background: var(--text);
  transition: all var(--t-fast);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
  min-height: 92vh;
  display: flex; align-items: center;
}
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.steam {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: steamMove 20s ease-in-out infinite;
}
.steam--1 { background: radial-gradient(circle, var(--neon), transparent 70%); top: 10%; left: 60%; }
.steam--2 { background: radial-gradient(circle, var(--blue), transparent 70%); bottom: -10%; left: -10%; animation-delay: -7s; }
.steam--3 { background: radial-gradient(circle, var(--accent), transparent 70%); top: 40%; right: -20%; animation-delay: -14s; opacity: 0.25; }
@keyframes steamMove {
  0%, 100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(80px, -50px) scale(1.15); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero__content { max-width: 600px; }

.badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 12px; font-weight: 600;
  color: var(--neon);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}
.badge__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 12px var(--neon);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(40px, 6vw, 76px);
  line-height: 1.02;
  margin: 24px 0 24px;
  font-weight: 700;
  letter-spacing: -0.03em;
}
.hero__pre { display: block; color: var(--text); }
.hero__neon {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  background: var(--grad-neon-2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
  text-shadow: 0 0 60px rgba(0,229,255,.5);
  animation: neonPulse 3s ease-in-out infinite;
}
@keyframes neonPulse {
  0%, 100% { filter: drop-shadow(0 0 20px rgba(0,229,255,.55)); }
  50% { filter: drop-shadow(0 0 38px rgba(0,229,255,.85)); }
}

.hero__sub {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero__sub strong { color: var(--neon); font-weight: 600; }

.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__trust {
  list-style: none; padding: 0; margin: 48px 0 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 28px;
}
.hero__trust li { display: flex; flex-direction: column; gap: 4px; }
.hero__trust strong {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(20px, 2.4vw, 28px);
  background: var(--grad-neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}
.hero__trust span { font-size: 12px; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.06em; }

/* HERO MACHINE PHOTO */
.hero__visual { position: relative; perspective: 1400px; }
.machine-stage {
  position: relative;
  width: 100%; max-width: 480px;
  margin: 0 auto;
  transform-style: preserve-3d;
  animation: floatY 6s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
.machine-glow {
  position: absolute;
  inset: -40px -10px -10px -10px;
  background: radial-gradient(ellipse at 70% 50%, rgba(0,229,255,.5), transparent 60%);
  filter: blur(60px);
  z-index: -1;
  animation: glowPulse 4s ease-in-out infinite;
  pointer-events: none;
}
.machine-glow--2 {
  inset: 30% -20% -20% 20%;
  background: radial-gradient(ellipse at center, rgba(0,102,255,.4), transparent 60%);
  animation-delay: -2s;
  filter: blur(80px);
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.65; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.machine-photo {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow:
    0 0 0 1px rgba(0,229,255,.25),
    0 30px 80px -20px rgba(0,0,0,.85),
    0 0 80px rgba(0,229,255,.18);
  background: linear-gradient(180deg, #0a1426, #04070d);
}
.machine-photo img {
  width: 100%;
  height: auto;
  display: block;
  transform: scale(1.02);
  transition: transform 1.2s cubic-bezier(.16,1,.3,1);
}
.machine-photo:hover img { transform: scale(1.05); }
.machine-photo__shine {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 30%, rgba(0,229,255,.12) 48%, transparent 60%);
  pointer-events: none;
  mix-blend-mode: screen;
  animation: shine 6s ease-in-out infinite;
}
@keyframes shine {
  0%, 100% { transform: translateX(-30%); opacity: 0.5; }
  50% { transform: translateX(30%); opacity: 1; }
}

.machine-badges {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.m-badge {
  position: absolute;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--neon);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 12px 30px -8px rgba(0,0,0,.6), 0 0 24px rgba(0,229,255,.2);
  white-space: nowrap;
}
.m-badge i {
  width: 8px; height: 8px;
  background: var(--neon);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--neon);
  animation: pulse 1.4s ease-in-out infinite;
}
.m-badge--1 {
  top: 14%; left: -8%;
  animation: floatY 5s ease-in-out infinite;
}
.m-badge--2 {
  bottom: 22%; right: -10%;
  animation: floatY 5.4s ease-in-out -2s infinite;
}

/* SCROLL HINT */
.scroll-hint {
  position: absolute; bottom: 24px; left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 2px solid var(--border-strong);
  border-radius: 14px;
  z-index: 3;
}
.scroll-hint span {
  display: block;
  width: 4px; height: 8px;
  background: var(--neon);
  border-radius: 2px;
  margin: 8px auto 0;
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(14px); opacity: 0.3; }
}

/* =========================================================
   SECTIONS
   ========================================================= */
.section {
  padding: 100px 0;
  position: relative;
}
.section__head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}
.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0,229,255,.08);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.1;
  margin: 0 0 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section__lead {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 auto;
}
.grad-text {
  background: var(--grad-neon-2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* =========================================================
   PROBLEM
   ========================================================= */
.problem__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.prob-card {
  padding: 28px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid rgba(255,255,255,.06);
  backdrop-filter: blur(16px);
  transition: all var(--t);
  position: relative;
  overflow: hidden;
}
.prob-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,229,255,.08), transparent);
  opacity: 0;
  transition: opacity var(--t);
}
.prob-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.prob-card:hover::before { opacity: 1; }
.prob-card__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  color: var(--neon);
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.15) inset;
  filter: drop-shadow(0 4px 16px rgba(0, 229, 255, 0.3));
  transition: transform var(--t);
}
.prob-card:hover .prob-card__icon {
  transform: translateY(-3px);
  background: rgba(0, 229, 255, 0.14);
}
.prob-card h3 { font-size: 18px; margin: 0 0 8px; }
.prob-card p { font-size: 14px; color: var(--text-dim); margin: 0; }
.prob-card strong { color: var(--neon); }

/* =========================================================
   FEATURES
   ========================================================= */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  perspective: 1400px;
}
.feat--wide { grid-column: span 1; }
.feat {
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,229,255,.4), rgba(0,102,255,.1) 50%, rgba(0,229,255,.05));
  transition: transform var(--t-slow);
  transform-style: preserve-3d;
  will-change: transform;
}
.feat__inner {
  height: 100%;
  background: linear-gradient(180deg, rgba(15,22,38,.94), rgba(8,12,22,.94));
  border-radius: calc(var(--radius-lg) - 1px);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}
.feat__inner::after {
  content: '';
  position: absolute;
  top: -2px; right: -2px;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(0,229,255,.18), transparent 70%);
  filter: blur(40px);
  opacity: 0;
  transition: opacity var(--t);
}
.feat:hover .feat__inner::after { opacity: 1; }

.feat__icon {
  width: 64px; height: 64px;
  border-radius: 14px;
  background: rgba(0,229,255,.08);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 22px;
  color: var(--neon);
  box-shadow: 0 0 24px rgba(0,229,255,.15) inset;
}
.feat h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  margin: 0 0 10px;
  font-weight: 700;
}
.feat p { color: var(--text-dim); font-size: 14.5px; margin: 0 0 16px; }
.feat__tag {
  display: inline-block;
  padding: 4px 10px;
  background: rgba(0,229,255,.08);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  color: var(--neon);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* =========================================================
   HOW IT WORKS
   ========================================================= */
.how__steps {
  list-style: none; padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}
.how__step {
  position: relative;
  padding: 36px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  transition: all var(--t);
}
.how__step:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 40px -12px rgba(0,229,255,.25);
}
.how__num {
  font-family: 'Orbitron', sans-serif;
  font-size: 56px;
  font-weight: 800;
  background: var(--grad-neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 16px;
  text-shadow: 0 0 40px rgba(0,229,255,.4);
}
.how__step h3 { font-size: 22px; margin: 0 0 8px; font-family: 'Space Grotesk', sans-serif; }
.how__step p { color: var(--text-dim); margin: 0; }
.how__line {
  position: absolute;
  top: 56px; right: -20px;
  width: 28px; height: 2px;
  background: linear-gradient(90deg, var(--neon), transparent);
}

/* =========================================================
   SPECS
   ========================================================= */
.specs__hero {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 48px;
}
.specs__big {
  text-align: center;
  padding: 36px 20px;
  background: linear-gradient(180deg, rgba(0,229,255,.06), rgba(0,102,255,.02));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  position: relative; overflow: hidden;
}
.specs__big::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at top, rgba(0,229,255,.15), transparent 60%);
}
.counter {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 800;
  background: var(--grad-neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 40px rgba(0,229,255,.4);
  line-height: 1;
}
.specs__big small {
  display: block;
  font-size: 12px;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 10px;
  font-weight: 600;
  position: relative;
}

.specs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(0,229,255,.1);
  border: 1px solid rgba(0,229,255,.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.spec {
  background: linear-gradient(180deg, rgba(15,22,38,.7), rgba(8,12,22,.7));
  padding: 18px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  transition: background var(--t-fast);
}
.spec:hover { background: rgba(0,229,255,.05); }
.spec span { color: var(--text-mute); font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.spec strong { color: var(--text); font-weight: 600; text-align: right; font-size: 14.5px; }

/* =========================================================
   ROI
   ========================================================= */
.roi__panel {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(20px);
  position: relative; overflow: hidden;
}
.roi__panel::before {
  content: '';
  position: absolute; top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,229,255,.1), transparent 60%);
  pointer-events: none;
}
.roi__inputs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
  position: relative;
}
.roi__field { display: flex; flex-direction: column; gap: 8px; }
.roi__field > span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.roi__input {
  display: flex; align-items: center;
  background: rgba(5,8,16,.6);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color var(--t);
}
.roi__input:focus-within { border-color: var(--neon); box-shadow: 0 0 0 3px rgba(0,229,255,.12); }
.roi__input input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  padding: 14px 16px;
  font-size: 18px;
  font-weight: 700;
  font-family: 'Orbitron', sans-serif;
  outline: none;
  width: 100%;
}
.roi__input em {
  font-style: normal;
  padding: 0 16px;
  color: var(--text-mute);
  font-size: 13px;
  font-weight: 600;
}

.roi__results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  position: relative;
}
.roi__card {
  padding: 24px;
  background: linear-gradient(180deg, rgba(0,229,255,.04), rgba(0,102,255,.01));
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
}
.roi__card--accent {
  background: linear-gradient(135deg, rgba(0,229,255,.16), rgba(0,102,255,.08));
  border-color: var(--border-strong);
  box-shadow: 0 0 40px rgba(0,229,255,.2);
}
.roi__label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.roi__value {
  display: block;
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  background: var(--grad-neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.roi__note {
  margin: 24px 0 0;
  font-size: 12px;
  color: var(--text-mute);
  text-align: center;
  position: relative;
}

/* =========================================================
   USE CASES
   ========================================================= */
.usecases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.uc {
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  transition: all var(--t);
  display: flex; flex-direction: column; gap: 8px;
}
.uc:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: linear-gradient(180deg, rgba(0,229,255,.06), rgba(15,22,38,.6));
}
.uc__icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--neon);
  margin-bottom: 6px;
  transition: transform var(--t), background var(--t);
  filter: drop-shadow(0 4px 12px rgba(0, 229, 255, 0.25));
}
.uc:hover .uc__icon {
  transform: translateY(-3px) scale(1.04);
  background: rgba(0, 229, 255, 0.14);
}
.uc h4 { font-size: 17px; margin: 4px 0 0; font-weight: 600; }
.uc p { font-size: 14px; color: var(--text-dim); margin: 0; }

/* =========================================================
   BENEFITS
   ========================================================= */
.benefits__grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.benefits__list { list-style: none; padding: 0; margin: 28px 0 32px; display: grid; gap: 12px; }
.benefits__list li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 16px;
  color: var(--text-dim);
}
.benefits__list span {
  flex-shrink: 0;
  width: 24px; height: 24px;
  background: var(--grad-neon);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #001018;
  font-weight: 800;
  font-size: 12px;
  box-shadow: 0 0 16px rgba(0,229,255,.5);
}

.benefits__photo {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow:
    0 30px 80px -20px rgba(0,0,0,.7),
    0 0 60px rgba(0,229,255,.18);
  isolation: isolate;
}
.benefits__photo img {
  width: 100%; height: auto; display: block;
  transition: transform 1.2s cubic-bezier(.16,1,.3,1);
  transform: scale(1.02);
}
.benefits__photo:hover img { transform: scale(1.06); }
.benefits__photo::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(5,8,16,.85) 100%);
  pointer-events: none;
}
.benefits__photo-glow {
  position: absolute;
  inset: -40px;
  background: radial-gradient(ellipse at 70% 50%, rgba(0,229,255,.4), transparent 60%);
  filter: blur(60px);
  z-index: -1;
  animation: glowPulse 5s ease-in-out infinite;
  pointer-events: none;
}
.benefits__photo-tag {
  position: absolute;
  bottom: 22px; left: 22px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: rgba(5,8,16,.78);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--neon);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 0 24px rgba(0,229,255,.25);
  z-index: 2;
}
.benefits__photo-tag .dot {
  width: 8px; height: 8px;
  background: var(--neon);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--neon);
  animation: pulse 1.6s ease-in-out infinite;
}

/* =========================================================
   CTA / FORM
   ========================================================= */
.cta-block { padding: 60px 0 100px; }
.cta-card {
  background: linear-gradient(180deg, rgba(0,229,255,.08), rgba(8,12,22,.92));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 56px;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at top right, rgba(0,229,255,.18), transparent 60%);
  pointer-events: none;
}
.cta-card__head { text-align: center; margin-bottom: 40px; max-width: 640px; margin-inline: auto; position: relative; }
.cta-card__head p { color: var(--text-dim); font-size: 16px; margin: 8px 0 0; }

.cta-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  position: relative;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: 12px; font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.field input, .field textarea {
  background: rgba(5,8,16,.5);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text);
  font: inherit;
  font-size: 15px;
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  resize: vertical;
}
.field input:focus, .field textarea:focus {
  border-color: var(--neon);
  box-shadow: 0 0 0 3px rgba(0,229,255,.12);
}
.cta-form__submit {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-form__direct {
  font-size: 14px;
  color: var(--text-dim);
}
.cta-form__direct a { color: var(--neon); font-weight: 600; }
.cta-form__status {
  grid-column: 1 / -1;
  margin: 0; font-size: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  display: none;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--text-dim);
}
.cta-form__status:not(:empty) { display: block; }
.cta-form__status.is-ok  { background: rgba(0,255,209,.08); border-color: rgba(0,255,209,.3); color: var(--accent); }
.cta-form__status.is-err { background: rgba(255,80,100,.08); border-color: rgba(255,80,100,.3); color: #ff6b80; }

/* Honeypot — visible to bots only */
.hp {
  position: absolute !important;
  left: -10000px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* =========================================================
   FAQ
   ========================================================= */
.faq__list { display: grid; gap: 12px; max-width: 880px; margin: 0 auto; }
.faq__item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--t);
}
.faq__item[open] { border-color: var(--border-strong); background: rgba(0,229,255,.03); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600; font-size: 16px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '+';
  width: 24px; height: 24px;
  background: rgba(0,229,255,.08);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--neon);
  font-weight: 700;
  flex-shrink: 0;
  transition: transform var(--t);
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p { padding: 0 24px 22px; margin: 0; color: var(--text-dim); font-size: 15px; }

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(5,8,16,.4), rgba(5,8,16,.95));
  padding: 60px 0 28px;
  position: relative;
  z-index: 2;
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr repeat(4, 1fr);
  gap: 36px;
  margin-bottom: 40px;
}
.footer__brand p { font-size: 14px; color: var(--text-dim); margin-top: 12px; }
.footer__col { display: flex; flex-direction: column; gap: 10px; }
.footer__col h4 {
  margin: 0 0 6px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text);
  font-weight: 700;
}
.footer__col a, .footer__col span {
  color: var(--text-dim);
  font-size: 14px;
}
.footer__col a:hover { color: var(--neon); }
.footer__bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.05);
  color: var(--text-mute);
  font-size: 12px;
}
.footer__domain {
  font-family: 'Orbitron', sans-serif;
  color: var(--neon);
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* =========================================================
   REVEAL ANIMATIONS
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--t-slow), transform var(--t-slow);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; text-align: center; }
  .hero__content { margin: 0 auto; }
  .hero__cta { justify-content: center; }
  .hero__visual { max-width: 400px; margin: 0 auto; }
  .hero__trust { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .problem__grid { grid-template-columns: repeat(2, 1fr); }
  .features__grid { grid-template-columns: repeat(2, 1fr); }
  .how__steps { grid-template-columns: 1fr; }
  .how__line { display: none; }
  .specs__hero { grid-template-columns: repeat(2, 1fr); }
  .specs__grid { grid-template-columns: 1fr; }
  .roi__inputs { grid-template-columns: 1fr; }
  .roi__results { grid-template-columns: 1fr; }
  .usecases__grid { grid-template-columns: repeat(2, 1fr); }
  .benefits__grid { grid-template-columns: 1fr; gap: 48px; }
  .benefits__visual { max-width: 360px; margin: 0 auto; }

  .cta-form { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: repeat(2, 1fr); }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .nav__links { display: none; }
  .nav__phone { display: none; }
  .nav__wa { display: none; }
  .nav__toggle { display: flex; }
  .nav__primary { padding: 8px 14px; font-size: 12px; }

  .nav.is-open .nav__links {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(5,8,16,.98);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    gap: 16px;
    backdrop-filter: blur(20px);
  }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

  .section { padding: 70px 0; }
  .hero { padding: 40px 0 70px; min-height: auto; }
  .scroll-hint { display: none; }

  .problem__grid { grid-template-columns: 1fr; }
  .features__grid { grid-template-columns: 1fr; }
  .specs__hero { grid-template-columns: 1fr 1fr; }
  .usecases__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { flex-direction: column; gap: 8px; }
  .cta-card { padding: 32px 24px; }
  .roi__panel { padding: 28px 22px; }

  .hero__trust { grid-template-columns: repeat(2, 1fr); }
  .hero__title { font-size: 40px; }
}

/* =========================================================
   LEGAL PAGES — KVKK / Çerez aydınlatma
   ========================================================= */
.legal-hero {
  position: relative;
  padding: 80px 0 40px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.legal-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0,229,255,.08), transparent 60%);
  pointer-events: none;
}
.legal-hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
  position: relative;
}
.legal-hero h1 small {
  display: block;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: var(--text-mute);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.legal-hero .legal-meta {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 14px;
  font-size: 13px;
  color: var(--text-mute);
  margin-top: 16px;
  position: relative;
}
.legal-hero .legal-meta span {
  padding: 6px 12px;
  background: rgba(0,229,255,.06);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.legal-hero .legal-meta strong { color: var(--neon); font-weight: 600; }

.legal-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  position: relative;
}
.legal-back svg { transition: transform var(--t-fast); }
.legal-back:hover { color: var(--neon); }
.legal-back:hover svg { transform: translateX(-3px); }

.legal-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 60px 24px 100px;
  position: relative;
  z-index: 2;
}
.legal-content h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 56px 0 16px;
  padding-top: 16px;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content h2 .num {
  font-family: 'Orbitron', sans-serif;
  font-size: 14px;
  font-weight: 800;
  background: var(--grad-neon);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-width: 32px;
}
.legal-content h3 {
  font-size: 17px;
  margin: 28px 0 8px;
  color: var(--text);
  font-weight: 600;
}
.legal-content p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
  margin: 0 0 14px;
}
.legal-content p strong, .legal-content li strong { color: var(--text); font-weight: 600; }
.legal-content a { color: var(--neon); border-bottom: 1px dashed rgba(0,229,255,.4); }
.legal-content a:hover { border-bottom-color: var(--neon); }
.legal-content ul {
  margin: 8px 0 18px;
  padding-left: 0;
  list-style: none;
}
.legal-content ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-dim);
}
.legal-content ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 12px;
  width: 14px; height: 2px;
  background: var(--grad-neon);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,229,255,.4);
}
.legal-content dl {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 12px 24px;
  margin: 16px 0 24px;
  padding: 20px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
}
.legal-content dt {
  font-weight: 600;
  color: var(--text);
  font-size: 14.5px;
}
.legal-content dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.7;
}
.legal-content .legal-card {
  margin: 18px 0 24px;
  padding: 22px 24px;
  background: linear-gradient(180deg, rgba(0,229,255,.05), rgba(8,12,22,.6));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
}
.legal-content .legal-card p { margin: 4px 0; }
.legal-content .legal-card strong { color: var(--neon); }

.legal-foot {
  margin-top: 60px;
  padding: 24px;
  background: rgba(0,229,255,.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
  font-size: 13px;
  color: var(--text-mute);
}
.legal-foot strong { color: var(--text); }

@media (max-width: 720px) {
  .legal-content dl { grid-template-columns: 1fr; gap: 4px; }
  .legal-content dt { margin-top: 8px; }
  .legal-hero { padding: 60px 0 32px; }
  .legal-content { padding: 40px 20px 80px; }
}

/* =========================================================
   WHATSAPP — buttons + floating
   ========================================================= */
:root {
  --wa: #25d366;
  --wa-2: #128c7e;
}

.btn--wa {
  background: linear-gradient(135deg, var(--wa) 0%, var(--wa-2) 100%);
  color: #ffffff;
  box-shadow: 0 10px 30px -10px rgba(37, 211, 102, 0.55), 0 0 0 1px rgba(37, 211, 102, 0.3) inset;
}
.btn--wa:hover {
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 16px 40px -10px rgba(37, 211, 102, 0.85), 0 0 0 1px rgba(37, 211, 102, 0.55) inset;
}

.nav__wa {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 13px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(37, 211, 102, 0.1);
  border: 1px solid rgba(37, 211, 102, 0.4);
  color: var(--wa);
  transition: all var(--t);
}
.nav__wa:hover {
  background: rgba(37, 211, 102, 0.18);
  border-color: var(--wa);
  color: #fff;
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.12);
}

.cta-form__wa {
  color: var(--wa) !important;
  font-weight: 700;
}
.cta-form__wa:hover { color: #6ff5a0 !important; }

/* Floating WhatsApp button */
.wa-float {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 90;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 18px 14px 14px;
  background: linear-gradient(135deg, var(--wa) 0%, var(--wa-2) 100%);
  color: #fff;
  border-radius: 999px;
  font-weight: 600; font-size: 14px;
  text-decoration: none;
  box-shadow:
    0 10px 30px -8px rgba(37, 211, 102, 0.55),
    0 0 0 1px rgba(37, 211, 102, 0.4) inset,
    0 0 28px rgba(37, 211, 102, 0.4);
  transition: transform var(--t), box-shadow var(--t);
}
.wa-float:hover {
  transform: translateY(-3px) scale(1.03);
  color: #fff;
  box-shadow:
    0 16px 40px -8px rgba(37, 211, 102, 0.8),
    0 0 0 1px rgba(37, 211, 102, 0.6) inset,
    0 0 40px rgba(37, 211, 102, 0.55);
}
.wa-float__pulse {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  border: 2px solid var(--wa);
  animation: waPulse 2s ease-out infinite;
  pointer-events: none;
}
@keyframes waPulse {
  0% { transform: scale(1); opacity: 0.7; }
  100% { transform: scale(1.35); opacity: 0; }
}
.wa-float__label { line-height: 1; }

@media (max-width: 720px) {
  .wa-float { padding: 12px; right: 16px; bottom: 16px; }
  .wa-float__label { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}