/* ==========================================================================
   Korvi · korvi.com.tr — ortak stil
   Marka: sessiz güvenlik. Karanlık zemin + amber vurgu + kalkan.
   ========================================================================== */

:root {
  --bg: #06090d;
  --bg2: #0a0e14;
  --card: #0d1218;
  --ink: #eef2f7;
  --muted: #7a8494;
  --line: #1a2029;
  --line-hi: #263242;
  --accent: #f59e0b;      /* amber — sıcak güvenlik */
  --accent-2: #fbbf24;    /* amber-400 */
  --accent-glow: rgba(245, 158, 11, 0.35);
  --danger: #f43f5e;
  --warn: #fbbf24;
  --ok: #34d399;

  --disp: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --body: 'Inter', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Space Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Arka plan grid + shield glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1100px 700px at 80% -10%, rgba(245, 158, 11, 0.08), transparent 60%),
    radial-gradient(900px 900px at -10% 100%, rgba(251, 191, 36, 0.05), transparent 60%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(245, 158, 11, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 158, 11, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.wrap-sm { max-width: 900px; margin: 0 auto; padding: 0 32px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow .line {
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.mono { font-family: var(--mono); }

/* Skip nav (a11y) */
.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  position: static;
  background: var(--accent);
  color: var(--bg);
  padding: 10px 14px;
}

/* ── NAV ────────────────────────────────────────────────────────────────── */
nav.top {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(6, 9, 13, 0.65);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
nav.top.scrolled { border-bottom-color: var(--line); background: rgba(6, 9, 13, 0.82); }
.nav-in {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}
.brand img {
  height: 30px;
  width: 30px;
  filter: drop-shadow(0 0 12px var(--accent-glow));
}
.brand .n {
  font-family: var(--disp);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.06em;
}
.brand .n .dot { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a:not(.btn) {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  position: relative;
  transition: color 0.2s;
}
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a.current::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 1px;
  background: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 12px 22px;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { border-color: var(--accent); color: var(--ink); background: rgba(245, 158, 11, 0.08); transform: translateY(-1px); }
.btn-primary {
  background: var(--accent);
  color: #06090d;
  border-color: var(--accent);
  box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
}
.btn-primary:hover {
  background: var(--accent);
  color: #06090d;
  border-color: var(--accent);
  box-shadow: 0 0 0 8px rgba(245, 158, 11, 0.12);
}
.btn-ghost { color: var(--muted); border-color: transparent; }
.btn-ghost:hover { color: var(--ink); background: transparent; border-color: var(--line); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 8px 10px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
}
@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg2);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn),
  .nav-links .btn { padding: 14px 32px; width: 100%; justify-content: flex-start; border: none; }
  .nav-links a.current::after { display: none; }
  .nav-links a.current { color: var(--accent); }
}

/* ── HERO ───────────────────────────────────────────────────────────────── */
header.hero {
  position: relative;
  padding: 96px 0 60px;
  overflow: hidden;
}
.hero-in {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 60px;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-in { grid-template-columns: 1fr; }
  header.hero { padding: 60px 0 30px; }
}
.hero h1 {
  font-family: var(--disp);
  font-weight: 600;
  font-size: clamp(38px, 5.6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-top: 22px;
}
.hero h1 .accent { color: var(--accent); position: relative; }
.hero h1 .accent::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 6px;
  background: linear-gradient(90deg, var(--accent-glow), transparent);
  filter: blur(6px);
  z-index: -1;
}
.hero p.lead {
  color: var(--muted);
  font-size: 18px;
  margin-top: 26px;
  max-width: 52ch;
  line-height: 1.65;
}
.hero-cta {
  margin-top: 34px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-meta {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.hero-meta .m {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-meta .m .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }

/* Hero shield visual */
.shield-viz {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  margin-left: auto;
  filter: drop-shadow(0 20px 60px rgba(245, 158, 11, 0.15));
}
.shield-viz .rings {
  position: absolute;
  inset: 0;
  animation: shieldSpin 40s linear infinite;
}
.shield-viz .rings::before,
.shield-viz .rings::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(245, 158, 11, 0.18);
}
.shield-viz .rings::before { inset: 8%; }
.shield-viz .rings::after { inset: 22%; border-style: solid; border-color: rgba(245, 158, 11, 0.08); }
.shield-viz img {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 55%;
  height: 55%;
  object-fit: contain;
  animation: shieldFloat 6s ease-in-out infinite;
}
.shield-viz .pulse {
  position: absolute;
  left: 50%; top: 50%;
  width: 55%; aspect-ratio: 1;
  border: 1px solid var(--accent);
  border-radius: 6px;
  transform: translate(-50%, -50%) rotate(45deg);
  opacity: 0;
  animation: shieldPulse 2.6s ease-out infinite;
}
.shield-viz .pulse:nth-child(4) { animation-delay: 1.3s; }
@keyframes shieldSpin { to { transform: rotate(360deg); } }
@keyframes shieldFloat {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes shieldPulse {
  0% { opacity: 0.6; transform: translate(-50%, -50%) rotate(45deg) scale(0.9); }
  100% { opacity: 0; transform: translate(-50%, -50%) rotate(45deg) scale(1.35); }
}

/* ── SECTION shell ─────────────────────────────────────────────────────── */
section.sec { padding: 90px 0; position: relative; }
section.sec > .wrap > .sec-head { margin-bottom: 40px; max-width: 60ch; }
section.sec h2 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-top: 14px;
}
section.sec p.sec-lead {
  color: var(--muted);
  font-size: 17px;
  margin-top: 16px;
  max-width: 56ch;
}

/* ── FEATURE GRID ──────────────────────────────────────────────────────── */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.feature {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--card) 0%, rgba(13, 18, 24, 0.4) 100%);
  padding: 26px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
}
.feature:hover { border-color: var(--line-hi); transform: translateY(-2px); }
.feature::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.25s;
}
.feature:hover::before { opacity: 0.7; }
.feature .ico {
  width: 44px; height: 44px;
  border: 1px solid var(--line-hi);
  display: grid; place-items: center;
  color: var(--accent);
  margin-bottom: 18px;
  background: rgba(245, 158, 11, 0.05);
}
.feature .num {
  position: absolute;
  top: 20px; right: 22px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
}
.feature h3 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: 20px;
  margin-bottom: 8px;
}
.feature p { color: var(--muted); font-size: 15px; line-height: 1.65; }

/* ── STEPS (nasıl-calisir) ─────────────────────────────────────────────── */
.steps {
  display: grid;
  gap: 26px;
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 30px;
  border-top: 1px solid var(--line);
  padding: 30px 0;
  position: relative;
}
.step:first-child { border-top: none; padding-top: 0; }
.step .n {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.22em;
  color: var(--accent);
  padding-top: 6px;
}
.step h3 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: 22px;
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}
.step p { color: var(--muted); max-width: 62ch; margin-bottom: 8px; }
.step .code {
  margin-top: 14px;
  background: var(--bg2);
  border: 1px solid var(--line);
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
  overflow-x: auto;
}
.step .code b { color: var(--accent); font-weight: normal; }
@media (max-width: 680px) {
  .step { grid-template-columns: 1fr; gap: 6px; }
}

/* ── PROMISES (guvenlik) ───────────────────────────────────────────────── */
.promises {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  border: 1px solid var(--line);
  background: var(--card);
}
.promise {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 22px;
  padding: 26px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s;
}
.promise:last-child { border-bottom: none; }
.promise:hover { background: rgba(245, 158, 11, 0.03); }
.promise .ok {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.1);
  color: var(--ok);
  display: grid; place-items: center;
  font-size: 14px;
  margin-top: 3px;
}
.promise h3 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: 18px;
  margin-bottom: 6px;
}
.promise p { color: var(--muted); font-size: 15px; }

/* ── CTA CARD ──────────────────────────────────────────────────────────── */
.cta-card {
  border: 1px solid var(--line);
  padding: 56px 44px;
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.06), transparent 60%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(400px 200px at 50% 0%, rgba(245, 158, 11, 0.18), transparent 60%);
  pointer-events: none;
}
.cta-card > * { position: relative; }
.cta-card h2 { font-family: var(--disp); font-weight: 500; font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.01em; }
.cta-card p { color: var(--muted); font-size: 17px; margin: 14px auto 26px; max-width: 52ch; }
.cta-card .row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── DOC (nasıl-calisir / guvenlik uzun metin) ─────────────────────────── */
.doc h1 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-top: 16px;
}
.doc h2 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: 24px;
  margin-top: 36px;
  margin-bottom: 12px;
  letter-spacing: -0.005em;
}
.doc h3 {
  font-family: var(--disp);
  font-weight: 500;
  font-size: 18px;
  margin-top: 22px;
  margin-bottom: 8px;
}
.doc p, .doc li { color: var(--muted); font-size: 16px; line-height: 1.75; }
.doc p + p { margin-top: 10px; }
.doc ul { padding-left: 22px; margin: 10px 0; }
.doc li { margin: 6px 0; }
.doc strong { color: var(--ink); font-weight: 500; }
.doc code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--bg2);
  border: 1px solid var(--line);
  padding: 2px 6px;
}

/* ── REVEAL animations ─────────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.06s; }
.reveal.d2 { transition-delay: 0.12s; }
.reveal.d3 { transition-delay: 0.18s; }
.reveal.d4 { transition-delay: 0.24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .shield-viz .rings,
  .shield-viz img,
  .shield-viz .pulse { animation: none; }
}

/* ── FOOTER ────────────────────────────────────────────────────────────── */
footer {
  margin-top: 40px;
  border-top: 1px solid var(--line);
  padding: 46px 0 42px;
  background: linear-gradient(180deg, transparent, rgba(245, 158, 11, 0.03));
}
.foot-in {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 34px;
  margin-bottom: 30px;
}
@media (max-width: 820px) {
  .foot-in { grid-template-columns: 1fr 1fr; }
}
.foot-brand p {
  color: var(--muted);
  font-size: 14px;
  margin-top: 12px;
  max-width: 40ch;
}
.foot-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 14px;
}
.foot-col a {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 5px 0;
  transition: color 0.2s;
}
.foot-col a:hover { color: var(--accent); }
.foot-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}
.foot-bottom .kimlik { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }

/* Utility */
.mt-lg { margin-top: 40px; }

/* ── İletişim formu ─────────────────────────────────────────────────────── */
.contact-form {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.cf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 640px) { .cf-row { grid-template-columns: 1fr; } }

.cf-field { display: flex; flex-direction: column; gap: 8px; }
.cf-field > span {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.cf-field > span em {
  font-style: normal;
  color: var(--muted);
  opacity: 0.65;
  text-transform: none;
  letter-spacing: 0.04em;
  margin-left: 6px;
}
.cf-field input,
.cf-field textarea {
  font-family: var(--body);
  font-size: 15px;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  width: 100%;
  resize: vertical;
}
.cf-field textarea { min-height: 140px; line-height: 1.55; }
.cf-field input::placeholder,
.cf-field textarea::placeholder { color: var(--muted); opacity: 0.6; }
.cf-field input:focus,
.cf-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.12);
  background: var(--bg2);
}
.cf-field input:invalid:not(:placeholder-shown),
.cf-field textarea:invalid:not(:placeholder-shown) {
  border-color: rgba(244, 63, 94, 0.5);
}

.cf-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.cf-foot {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.cf-status {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.4;
}
.cf-status.ok  { color: var(--ok); }
.cf-status.err { color: var(--danger); }

.cf-note {
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 6px;
}
.cf-note b { color: var(--ink); font-weight: 500; }