/* =============================================================
   Görünmez Çadır — Stylesheet
   Palette: deep forest night + phosphor-camo green accent
   ============================================================= */

:root{
  --background:#121411;
  --surface:#121411;
  --surface-container-low:#1a1c19;
  --surface-container:#1e201d;
  --surface-container-high:#292b27;
  --surface-bright:#383a36;
  --on-surface:#e3e3de;
  --on-surface-variant:#c2c8be;
  --outline:#8c9389;
  --outline-variant:#424840;

  --primary:#abd0a6;
  --on-primary:#173719;
  --primary-container:#7da17a;

  --secondary:#b6cacb;
  --tertiary:#d7c3b0;

  --error:#ffb4ab;

  --font-display:'Hanken Grotesk', sans-serif;
  --font-mono:'Geist', monospace;

  --margin-desktop:64px;
  --margin-mobile:20px;
  --section-gap:120px;
  --container-max:1280px;
  --gutter:24px;
}

*{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--background);
  color:var(--on-surface);
  font-family:var(--font-display);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
img{ max-width:100%; display:block; }

.material-symbols-outlined{
  font-variation-settings:'FILL' 0,'wght' 400,'GRAD' 0,'opsz' 24;
}

/* ---------- Reveal on scroll ---------- */
.reveal{
  opacity:0;
  transform:translateY(28px);
  transition:opacity 1s cubic-bezier(.25,.46,.45,.94), transform 1s cubic-bezier(.25,.46,.45,.94);
}
.reveal.active{ opacity:1; transform:translateY(0); }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
}

/* ---------- Layout helpers ---------- */
.section{ padding:var(--section-gap) var(--margin-mobile); }
.section-alt{ background:var(--surface-container-low); }
.section-inner{ max-width:var(--container-max); margin:0 auto; position:relative; z-index:1; }
@media (min-width:768px){
  .section{ padding:var(--section-gap) var(--margin-desktop); }
}

.eyebrow{
  display:block;
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--primary);
  margin-bottom:16px;
}

h1,h2,h3,h4{ font-family:var(--font-display); color:#ffffff; margin:0 0 12px; }
h2{ font-size:36px; line-height:1.15; letter-spacing:-0.01em; margin-bottom:24px; }
h3{ font-size:24px; }
h4{ font-size:19px; }
@media (min-width:768px){ h2{ font-size:52px; } }

.lead{ font-size:18px; line-height:1.6; color:var(--secondary); max-width:640px; }
.lead-narrow{ max-width:560px; }

/* ---------- Glass panel ---------- */
.glass{
  background:rgba(18,20,17,0.45);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,0.1);
}

/* ---------- Buttons ---------- */
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  background:var(--primary);
  color:var(--on-primary);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:0.05em;
  text-transform:uppercase;
  padding:16px 36px;
  border-radius:999px;
  border:none;
  cursor:pointer;
  transition:transform .3s ease, opacity .3s ease;
}
.btn-primary:hover{ opacity:.85; transform:translateY(-2px); }
.btn-small{ padding:10px 22px; font-size:13px; }
.btn-large{ padding:20px 48px; font-size:15px; box-shadow:0 0 30px rgba(171,208,166,.3); }
.btn-full{ width:100%; }

.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:rgba(18,20,17,.4);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.2);
  color:var(--on-surface);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:0.05em;
  text-transform:uppercase;
  padding:16px 36px;
  border-radius:999px;
  transition:background .3s ease;
}
.btn-ghost:hover{ background:rgba(255,255,255,.1); }

/* =============================================================
   Header
   ============================================================= */
.main-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:50;
  transition:padding .4s ease;
}
.main-header.is-compact .nav-bar{
  padding-top:10px;
  padding-bottom:10px;
  box-shadow:0 8px 30px rgba(0,0,0,.35);
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  max-width:var(--container-max);
  margin:0 auto;
  padding:16px var(--margin-mobile);
  background:rgba(18,20,17,.55);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,.1);
}
@media (min-width:768px){
  .nav-bar{ padding:16px var(--margin-desktop); }
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{
  width:34px; height:34px;
  border-radius:8px;
  background:radial-gradient(circle at 30% 30%, var(--primary), var(--primary-container) 70%);
  box-shadow:0 0 16px rgba(171,208,166,.4);
  flex-shrink:0;
}
.brand-name{ font-size:19px; font-weight:600; color:#fff; white-space:nowrap; }

.nav-links{ display:none; gap:32px; }
.nav-links a{ font-size:15px; color:rgba(227,227,222,.7); transition:color .2s ease; }
.nav-links a:hover{ color:var(--on-surface); }
@media (min-width:920px){ .nav-links{ display:flex; } }

.nav-actions{ display:flex; align-items:center; gap:14px; }

.lang-switch{ display:flex; gap:4px; background:rgba(255,255,255,.06); border-radius:999px; padding:4px; }
.lang-btn{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--on-surface-variant);
  background:transparent;
  border:none;
  padding:6px 12px;
  border-radius:999px;
  cursor:pointer;
  transition:background .2s ease, color .2s ease;
}
.lang-btn.active{ background:var(--primary); color:var(--on-primary); }

/* =============================================================
   Hero
   ============================================================= */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  text-align:center;
  padding:140px var(--margin-mobile) 100px;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media-placeholder{
  position:absolute; inset:0;
  display:flex; align-items:center; justify-content:center;
  text-align:center;
  padding:40px;
  background:
    radial-gradient(circle at 30% 20%, rgba(171,208,166,.15), transparent 55%),
    linear-gradient(160deg, #1a1f19 0%, #0d0f0c 60%, #10130f 100%);
  color:rgba(227,227,222,.35);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.03em;
  border-bottom:1px solid rgba(255,255,255,.05);
}
.hero-media-placeholder img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.hero-overlay{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(18,20,17,.3) 0%, rgba(18,20,17,.75) 100%);
}
.hero-content{ position:relative; z-index:2; max-width:820px; }
.hero-content h1{
  font-size:40px;
  line-height:1.1;
  letter-spacing:-0.02em;
  margin-bottom:20px;
}
@media (min-width:768px){
  .hero-content h1{ font-size:72px; line-height:1.05; }
}
.hero-content .lead{ margin:0 auto 40px; }
.hero-actions{ display:flex; flex-direction:column; gap:16px; justify-content:center; align-items:center; }
@media (min-width:640px){ .hero-actions{ flex-direction:row; } }

.scroll-indicator{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%);
  z-index:2;
  display:flex; flex-direction:column; align-items:center; gap:8px;
  font-family:var(--font-mono); font-size:12px; letter-spacing:.1em;
  color:rgba(227,227,222,.5);
}
.scroll-line{ width:1px; height:48px; background:linear-gradient(to bottom, var(--primary), transparent); }

/* =============================================================
   Tech section
   ============================================================= */
.tech-grid{ display:grid; grid-template-columns:1fr; gap:var(--gutter); }
@media (min-width:900px){ .tech-grid{ grid-template-columns:7fr 5fr; } }

.tech-main{ position:relative; border-radius:12px; overflow:hidden; }
.tech-main-media{
  aspect-ratio:4/3;
  display:flex; align-items:center; justify-content:center;
  text-align:center; padding:32px;
  background:linear-gradient(150deg, #1c211b, #0e100d);
  border:1px solid rgba(255,255,255,.08);
  color:rgba(227,227,222,.35);
  font-family:var(--font-mono); font-size:13px;
}
.tech-main-caption{
  position:absolute; left:32px; bottom:28px; max-width:80%;
}
.tech-main-caption h3{ color:#fff; margin-bottom:6px; }
.tech-main-caption p{ color:var(--on-surface-variant); margin:0; }

.stealth-dot{
  position:absolute; width:12px; height:12px; border-radius:50%;
  background:var(--primary); box-shadow:0 0 15px var(--primary);
  animation:pulse-glow 3s infinite;
}
.dot-1{ top:26%; left:32%; }
.dot-2{ bottom:34%; right:24%; animation-delay:1.2s; }
@keyframes pulse-glow{
  0%{ transform:scale(1); opacity:.8; }
  50%{ transform:scale(1.5); opacity:.4; }
  100%{ transform:scale(1); opacity:.8; }
}

.tech-cards{ display:flex; flex-direction:column; gap:var(--gutter); }
.tech-card{
  flex:1;
  padding:28px;
  border-radius:12px;
  background:rgba(18,20,17,.4);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.1);
}
.tech-card .material-symbols-outlined{ color:var(--primary); font-size:32px; margin-bottom:14px; display:block; }
.tech-card p{ color:var(--on-surface-variant); margin:0; font-size:15px; }

/* =============================================================
   Use cases
   ============================================================= */
.usecase-grid{
  display:grid; grid-template-columns:1fr; gap:var(--gutter); margin-top:40px;
}
@media (min-width:640px){ .usecase-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .usecase-grid{ grid-template-columns:repeat(4,1fr); } }

.usecase-card{
  padding:28px 24px;
  border-radius:12px;
  background:var(--surface-container);
  border:1px solid rgba(255,255,255,.06);
  transition:border-color .3s ease, transform .3s ease;
}
.usecase-card:hover{ border-color:rgba(171,208,166,.4); transform:translateY(-4px); }
.usecase-card .material-symbols-outlined{ color:var(--primary); font-size:28px; margin-bottom:14px; display:block; }
.usecase-card p{ color:var(--on-surface-variant); font-size:14px; margin:0; }

/* =============================================================
   Pricing / Capacity
   ============================================================= */
.pricing-grid{
  display:grid; grid-template-columns:1fr; gap:var(--gutter); margin-top:40px;
}
@media (min-width:900px){ .pricing-grid{ grid-template-columns:repeat(3,1fr); } }

.price-card{
  position:relative;
  padding:36px 32px;
  border-radius:16px;
  background:var(--surface-container);
  border:1px solid rgba(255,255,255,.08);
  display:flex; flex-direction:column;
}
.price-card-featured{
  border-color:var(--primary);
  background:linear-gradient(160deg, rgba(171,208,166,.08), var(--surface-container));
}
.price-badge{
  position:absolute; top:-13px; left:32px;
  background:var(--primary); color:var(--on-primary);
  font-family:var(--font-mono); font-size:11px; letter-spacing:.08em;
  padding:5px 14px; border-radius:999px;
}
.price-tag{ font-size:16px; color:var(--on-surface-variant); margin:6px 0 24px; }
.price-tag strong{ display:block; font-size:34px; color:#fff; font-family:var(--font-display); margin-top:4px; }
.price-features{ flex:1; margin-bottom:28px; }
.price-features li{
  padding:10px 0; border-top:1px solid rgba(255,255,255,.08);
  color:var(--on-surface-variant); font-size:14px;
}
.price-features li:first-child{ border-top:none; }

.custom-note{
  margin-top:32px; text-align:center; color:var(--on-surface-variant);
  font-size:14px; max-width:640px; margin-left:auto; margin-right:auto;
}

/* =============================================================
   Consultancy / Process
   ============================================================= */
.process-grid{
  display:grid; grid-template-columns:1fr; gap:var(--gutter); margin-top:40px;
}
@media (min-width:768px){ .process-grid{ grid-template-columns:repeat(4,1fr); } }

.process-step{ padding:8px; }
.step-number{
  display:block; font-family:var(--font-mono); font-size:14px;
  color:var(--primary); letter-spacing:.05em; margin-bottom:14px;
}
.process-step p{ color:var(--on-surface-variant); font-size:14px; margin:0; }

/* =============================================================
   Order / CTA
   ============================================================= */
.order-section{ display:flex; justify-content:center; }
.order-box{
  max-width:760px; width:100%;
  text-align:center;
  padding:64px 32px;
  border-radius:24px;
  background:rgba(18,20,17,.4);
  backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.1);
}
@media (min-width:768px){ .order-box{ padding:96px 64px; } }
.order-box .lead{ margin:0 auto 40px; }
.order-meta{
  margin-top:28px; font-family:var(--font-mono); font-size:13px;
  color:rgba(227,227,222,.4);
}

/* =============================================================
   Footer
   ============================================================= */
.footer{ border-top:1px solid rgba(255,255,255,.06); padding:80px var(--margin-mobile); }
@media (min-width:768px){ .footer{ padding:80px var(--margin-desktop); } }
.footer-inner{
  max-width:var(--container-max); margin:0 auto;
  display:flex; flex-direction:column; gap:32px;
  align-items:center; text-align:center;
}
@media (min-width:768px){
  .footer-inner{ flex-direction:row; justify-content:space-between; text-align:left; }
}
.footer-copy{ font-family:var(--font-mono); font-size:13px; color:var(--secondary); margin:8px 0 0; }
.footer-links{ display:flex; gap:28px; }
.footer-links a{ font-family:var(--font-mono); font-size:13px; color:var(--on-surface-variant); transition:color .2s ease; }
.footer-links a:hover{ color:var(--primary); }