/* ============================================================
   ADNR Enerji A.Ş. — Kurumsal Tasarım Sistemi
   Motion patterns: HERO-REVEAL, SCROLL-REVEAL, STAGGER-GRID,
   COUNTER, PARALLAX-SUBTLE, IMAGE-UNMASK (signature: energy-line),
   HOVER-LIFT, NAV-SHRINK
   ============================================================ */

:root {
  /* Renk sistemi */
  --brand: #F07E26;
  --brand-soft: rgba(240, 126, 38, 0.12);
  --navy: #17324D;
  --navy-800: #122840;
  --navy-900: #0D1F33;
  --teal: #38B6C8;
  --teal-soft: rgba(56, 182, 200, 0.12);
  --bg: #F8F9FB;
  --ink: #2F3A45;
  --ink-soft: #5A6773;
  --white: #ffffff;
  --line: rgba(23, 50, 77, 0.10);

  /* Motion (skill timing standartları) */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-quart: cubic-bezier(0.5, 0, 0.75, 0);
  --dur-micro: 200ms;
  --dur-reveal: 600ms;
  --dur-hero: 800ms;

  /* Tipografi */
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  --radius: 16px;
  --radius-lg: 24px;
  --container: 1240px;
  --header-h: 84px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Tipografi ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.display-1 { font-size: clamp(2.6rem, 5.2vw, 4.4rem); }
.display-2 { font-size: clamp(2rem, 3.6vw, 3rem); }
.h3 { font-size: clamp(1.25rem, 1.8vw, 1.5rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 2px;
  background: var(--brand);
  border-radius: 2px;
}

.lead { font-size: 1.12rem; color: var(--ink-soft); max-width: 60ch; }

.section { position: relative; padding: 110px 0; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { margin: 14px 0 16px; }

/* Koyu bölümler (sabit lacivert — her iki temada aynı kalır) */
.section--dark { background: linear-gradient(160deg, #17324D 0%, #0D1F33 100%); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #ffffff; }
.section--dark p, .section--dark .lead { color: rgba(255, 255, 255, 0.72); }
.section--dark .eyebrow { color: var(--teal); }
.section--dark .eyebrow::before { background: var(--teal); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  border: 1.5px solid transparent;
  transition: background-color var(--dur-micro) var(--ease-out-quart),
              color var(--dur-micro) var(--ease-out-quart),
              border-color var(--dur-micro) var(--ease-out-quart),
              transform var(--dur-micro) var(--ease-out-quart);
}
.btn svg { transition: transform var(--dur-micro) var(--ease-out-quart); }
.btn:hover svg { transform: translateX(4px); }
.btn:hover { transform: translateY(-2px); }

.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: #d96c17; }

.btn--outline { border-color: rgba(23, 50, 77, 0.25); color: var(--navy); }
.btn--outline:hover { border-color: var(--navy); }

.btn--ghost { border-color: rgba(255, 255, 255, 0.3); color: #fff; }
.btn--ghost:hover { border-color: #fff; }

/* ============================================================
   HEADER — NAV-SHRINK pattern
   Logo koyu renkli olduğu için header her durumda açık zeminli.
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(248, 249, 251, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(23, 50, 77, 0.04), 0 6px 20px rgba(23, 50, 77, 0.04);
  transition: background-color 300ms var(--ease-out-quart),
              border-color 300ms var(--ease-out-quart),
              box-shadow 300ms var(--ease-out-quart);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
  transition: height 300ms var(--ease-out-quart);
}
/* Scroll sonrası: beyaz zemin (NAV-SHRINK) */
body.nav-compact .site-header {
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 30px rgba(23, 50, 77, 0.06);
}
body.nav-compact .header-inner { height: 68px; }

.logo img, .logo svg { height: 40px; width: auto; transition: height 300ms var(--ease-out-quart); }
body.nav-compact .logo img { height: 34px; }

.main-nav { display: flex; align-items: center; gap: 22px; }
.main-nav a {
  position: relative;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  padding: 6px 0;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out-quart);
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-micro) var(--ease-out-quart);
}
.main-nav a:hover, .main-nav a.active { color: var(--navy); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

.header-right { display: flex; align-items: center; gap: 18px; }

.lang {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
}
.lang .active { color: var(--brand); }
.lang .sep { color: var(--line); }
.lang .passive { color: var(--ink-soft); opacity: 0.55; cursor: default; }

/* Tema geçiş butonu (açık/koyu) */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--navy);
  transition: color var(--dur-micro) var(--ease-out-quart),
              border-color var(--dur-micro) var(--ease-out-quart),
              transform var(--dur-micro) var(--ease-out-quart);
}
.theme-toggle:hover { color: var(--brand); border-color: var(--brand); transform: rotate(15deg); }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* Mobil menü butonu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 8px;
  position: relative;
  z-index: 120; /* menü panelinin (90) üzerinde kalır — kapat (X) butonu her zaman görünür */
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform var(--dur-micro) var(--ease-out-quart),
              opacity var(--dur-micro) var(--ease-out-quart);
}
body.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO — tam ekran, sol içerik / sağ illüstrasyon
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 80px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* HERO-REVEAL: maskeli satır reveal */
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line-inner { display: inline-block; }

.hero-sub { margin: 22px 0 30px; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.tag {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--navy);
}
.tag::before { content: "◦ "; color: var(--brand); }

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

/* Hero illüstrasyon */
.hero-visual { position: relative; }
.hero-visual svg { width: 100%; height: auto; }

/* Yavaş süzülme — dekoratif, 8s+ */
.float-slow { animation: floatSlow 9s ease-in-out infinite; }
.float-slower { animation: floatSlow 13s ease-in-out infinite reverse; }
@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

/* Enerji nabzı — glow */
.pulse-glow { animation: pulseGlow 5s ease-in-out infinite; }
@keyframes pulseGlow {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ============================================================
   ARKAPLAN KATMANLARI — grid + gradient blob + canvas particle
   ============================================================ */
.bg-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.bg-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

/* Çok hafif teknik grid */
.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 50, 77, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 50, 77, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 75%);
}
.section--dark .bg-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

/* Gradient blur blob'ları — çok yavaş */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  animation: blobDrift 26s ease-in-out infinite alternate;
}
.blob--brand { background: var(--brand); width: 480px; height: 480px; }
.blob--teal { background: var(--teal); width: 420px; height: 420px; animation-duration: 32s; }
.blob--navy { background: var(--teal); width: 380px; height: 380px; opacity: 0.18; animation-duration: 38s; }
@keyframes blobDrift {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, -40px) scale(1.12); }
}

/* ============================================================
   SIGNATURE MOVE — "Enerji Hattı"
   Logodaki turuncu nabız çizgisinden türetilen, scroll ile
   çizilen SVG enerji çizgisi (stroke-draw). motion.js çizer.
   ============================================================ */
.energy-line { width: 100%; max-width: 420px; height: 40px; margin-top: 8px; }
.energy-line path {
  fill: none;
  stroke: var(--brand);
  stroke-width: 3;
  stroke-linecap: round;
}

/* ---------- İstatistik şeridi (COUNTER) ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat {
  padding: 32px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1;
}
.stat-num .unit { font-size: 0.5em; color: var(--brand); font-weight: 600; margin-left: 4px; }
.stat-label { margin-top: 10px; font-size: 0.88rem; color: var(--ink-soft); }

/* ---------- Kart grid (STAGGER-GRID + HOVER-LIFT) ---------- */

/* Hover'da kenar boyunca dönen gradient (animasyonlu açı için @property) */
@property --card-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
/* 2 sütunlu varyant — mobil kuralı (tek sütun) media query'den gelir */
.card-grid--2 { grid-template-columns: 1fr 1fr; }
.card {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: transform var(--dur-micro) var(--ease-out-quart),
              border-color var(--dur-micro) var(--ease-out-quart);
  overflow: hidden;
}
/* HOVER-LIFT: gölge pseudo-element opacity ile (performans) */
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 24px 48px -16px rgba(23, 50, 77, 0.18);
  opacity: 0;
  transition: opacity var(--dur-micro) var(--ease-out-quart);
  pointer-events: none;
}
/* Hareketli gradient border — conic-gradient halka, mask ile sadece kenar görünür */
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px; /* halka kalınlığı */
  background: conic-gradient(
    from var(--card-angle),
    transparent 0deg,
    var(--brand) 60deg,
    var(--teal) 120deg,
    transparent 180deg,
    transparent 360deg
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  opacity: 0;
  transition: opacity 250ms var(--ease-out-quart);
  pointer-events: none;
}
.card:hover { transform: translateY(-4px); border-color: transparent; }
.card:hover::after { opacity: 1; }
.card:hover::before {
  opacity: 1;
  animation: cardBorderSpin 3.5s linear infinite; /* kenar boyunca akan ışık */
}
@keyframes cardBorderSpin {
  to { --card-angle: 360deg; }
}

.card-icon {
  width: 52px; height: 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand);
  margin-bottom: 22px;
}
.card-icon--teal { background: var(--teal-soft); color: var(--teal); }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { font-size: 0.94rem; color: var(--ink-soft); }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--brand);
}
.card-link svg { transition: transform var(--dur-micro) var(--ease-out-quart); }
.card:hover .card-link svg { transform: translateX(4px); }

/* Koyu zemin kartları */
.section--dark .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}
.section--dark .card:hover { border-color: transparent; }
.section--dark .card::before {
  padding: 1.5px;
  background: conic-gradient(
    from var(--card-angle),
    transparent 0deg,
    var(--teal) 60deg,
    var(--brand) 120deg,
    transparent 180deg,
    transparent 360deg
  );
}
.section--dark .card p { color: rgba(255, 255, 255, 0.65); }

/* ---------- Panel (IMAGE-UNMASK hedefi) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.panel-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, #17324D 0%, #0D1F33 100%);
  min-height: 420px;
  display: grid;
  place-items: center;
  padding: 40px;
}
.panel-visual svg { width: 100%; max-width: 440px; height: auto; }

/* Spec listeleri */
.spec-list { display: grid; gap: 14px; margin-top: 28px; }
.spec {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: transform var(--dur-micro) var(--ease-out-quart),
              border-color var(--dur-micro) var(--ease-out-quart);
}
.spec:hover { transform: translateY(-2px); border-color: rgba(240, 126, 38, 0.4); }
.spec-name {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--navy);
  min-width: 64px;
}
.spec-cap { color: var(--brand); font-weight: 600; font-family: var(--font-display); white-space: nowrap; }
.spec-desc { color: var(--ink-soft); font-size: 0.88rem; flex: 1; }

.section--dark .spec { background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.1); }
.section--dark .spec-name { color: #fff; }
.section--dark .spec-desc { color: rgba(255,255,255,0.6); }

/* ---------- Chip / rozet ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--navy);
}
.section--dark .chip { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.14); color: #fff; }

/* ---------- Haber kartları ---------- */
.news-card { padding: 0; }
.news-media {
  position: relative;
  height: 190px;
  background: linear-gradient(140deg, #17324D 0%, #0D1F33 70%);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.news-media svg { width: 88px; height: 88px; opacity: 0.9; }
.news-badge {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(240, 126, 38, 0.92);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  font-family: var(--font-display);
}
.news-body { padding: 26px 28px 30px; }
.news-date { font-size: 0.8rem; color: var(--ink-soft); margin-bottom: 10px; display: block; }

/* ---------- İç sayfa hero ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 110px) 0 90px;
  background: linear-gradient(160deg, #17324D 0%, #0D1F33 100%);
  overflow: hidden;
}
.page-hero .eyebrow { color: var(--teal); }
.page-hero .eyebrow::before { background: var(--teal); }
.page-hero h1 { color: #fff; margin: 16px 0 10px; }
.page-hero .lead { color: rgba(255, 255, 255, 0.72); }
.page-hero .chips { margin-top: 28px; }
.page-hero .chip { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.16); color: #fff; }

/* ---------- Form ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 8px;
  font-family: var(--font-display);
}
.field input, .field textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  transition: border-color var(--dur-micro) var(--ease-out-quart),
              box-shadow var(--dur-micro) var(--ease-out-quart);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(240, 126, 38, 0.15);
}
.field textarea { min-height: 140px; resize: vertical; }
.form-status { margin-top: 14px; font-size: 0.85rem; color: var(--ink-soft); display: none; }
.form-status.show { display: block; }

/* İletişim bilgi kartları */
.contact-info { display: grid; gap: 14px; margin-bottom: 22px; }
.info-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.info-item .ii-icon { color: var(--brand); flex-shrink: 0; margin-top: 2px; }
.info-item h4 {
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.info-item p, .info-item a { color: var(--ink-soft); font-size: 0.94rem; }
.info-item a { transition: color var(--dur-micro) var(--ease-out-quart); }
.info-item a:hover { color: var(--brand); }

/* Harita gömme alanı */
.map-embed {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  height: 320px;
}
.map-embed iframe { width: 100%; height: 100%; border: 0; display: block; }

.map-box {
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(23, 50, 77, 0.25);
  background: var(--white);
  min-height: 380px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px;
}
.map-box .icon { color: var(--teal); margin: 0 auto 18px; }

/* ---------- CTA bandı ---------- */
.cta-band {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, #17324D 0%, #0D1F33 100%);
  padding: 72px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  overflow: hidden;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.7); margin-top: 12px; max-width: 46ch; }

/* ============================================================
   FOOTER — açık zemin (logo renkleri korunuyor)
   ============================================================ */
.site-footer {
  position: relative;
  background: var(--white);
  border-top: 1px solid var(--line);
  padding: 80px 0 36px;
  overflow: hidden;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand img { height: 48px; width: auto; margin-bottom: 20px; }
.footer-brand p { font-size: 0.9rem; color: var(--ink-soft); max-width: 34ch; }
.footer-col h4 {
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 18px;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a {
  font-size: 0.92rem;
  color: var(--ink-soft);
  transition: color var(--dur-micro) var(--ease-out-quart);
}
.footer-col a:hover { color: var(--brand); }
.footer-col .passive { opacity: 0.5; cursor: default; }
/* Sosyal medya — flat ikonlar */
.social-icons { display: flex; gap: 10px; }
.social-icons > span, .social-icons > a {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--navy);
  transition: color var(--dur-micro) var(--ease-out-quart),
              border-color var(--dur-micro) var(--ease-out-quart),
              transform var(--dur-micro) var(--ease-out-quart);
}
.social-icons > span:hover, .social-icons > a:hover {
  color: var(--brand);
  border-color: var(--brand);
  transform: translateY(-2px);
}
.social-icons .passive { opacity: 0.6; cursor: default; }

/* E-bülten kaydı */
.newsletter { margin-top: 28px; }
.newsletter h4 { margin-bottom: 8px; }
.newsletter > p { font-size: 0.86rem; color: var(--ink-soft); }
.newsletter-form { display: flex; gap: 8px; margin-top: 12px; }
.newsletter-form input {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.88rem;
  transition: border-color var(--dur-micro) var(--ease-out-quart),
              box-shadow var(--dur-micro) var(--ease-out-quart);
}
.newsletter-form input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(240, 126, 38, 0.15);
}
.newsletter-form button {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border: 0;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  transition: background-color var(--dur-micro) var(--ease-out-quart),
              transform var(--dur-micro) var(--ease-out-quart);
}
.newsletter-form button:hover { background: #d96c17; transform: translateY(-2px); }
.newsletter-status {
  display: none;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 8px;
}
.newsletter-status.show { display: block; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ============================================================
   RESPONSIVE — desktop öncelikli
   ============================================================ */
@media (max-width: 1320px) {
  .main-nav { gap: 15px; }
  .main-nav a { font-size: 0.79rem; }
}

@media (max-width: 1024px) {
  /* Tablet */
  .main-nav {
    position: fixed;
    top: 0; right: 0;
    width: min(360px, 84vw);
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 8px;
    padding: 120px 40px 40px;
    background: var(--white);
    box-shadow: -20px 0 60px rgba(23, 50, 77, 0.12);
    transform: translateX(100%);
    transition: transform 400ms var(--ease-out-expo);
    z-index: 90;
  }
  body.nav-open .main-nav { transform: translateX(0); }
  .main-nav a { font-size: 1.05rem; padding: 10px 0; }
  .nav-toggle { display: flex; }

  /* Menü açıkken karartma katmanı — dışına tıklayınca kapanır */
  body::after {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(13, 31, 51, 0.45);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 80;
    transition: opacity 300ms var(--ease-out-quart), visibility 300ms;
  }
  body.nav-open::after {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
  body.nav-open { overflow: hidden; } /* arka plan scroll kilidi */

  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero { min-height: auto; padding-bottom: 60px; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .split { grid-template-columns: 1fr; gap: 48px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; padding: 56px 40px; }
}

@media (max-width: 640px) {
  /* Mobil — section sıralaması korunur */
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }
  .card-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat { padding: 24px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .blob { filter: blur(60px); }
}

/* ============================================================
   ERİŞİLEBİLİRLİK — prefers-reduced-motion (zorunlu)
   JS tarafı da ayrıca kontrol eder; bu blok CSS animasyonlarını keser.
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   DARK MOD — html[data-theme="dark"]
   Değişken bazlı tema; koyu lacivert bölümler her iki temada sabittir.
   ============================================================ */
[data-theme="dark"] {
  --bg: #0B1B2E;
  --ink: #E7EDF4;
  --ink-soft: #A5B4C3;
  --navy: #E9F0F7;          /* başlık/metin rolünde kullanılıyor */
  --white: #12263D;          /* kart/yüzey rengi rolünde kullanılıyor */
  --line: rgba(255, 255, 255, 0.10);
  --brand-soft: rgba(240, 126, 38, 0.16);
  --teal-soft: rgba(56, 182, 200, 0.16);
}

[data-theme="dark"] body { background: var(--bg); }
body { transition: background-color 300ms var(--ease-out-quart); }

/* Header */
[data-theme="dark"] .site-header {
  background: rgba(11, 27, 46, 0.82);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}
[data-theme="dark"] body.nav-compact .site-header {
  background: rgba(13, 31, 51, 0.94);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
}

/* Logo koyu harfli — koyu zeminde beyaz plaka üzerinde gösterilir
   (logo yeniden çizilmez, renkleri korunur) */
[data-theme="dark"] .logo img,
[data-theme="dark"] .footer-brand > img {
  background: #fff;
  padding: 6px 10px;
  border-radius: 10px;
  box-sizing: content-box;
}

/* Arkaplan grid'i */
[data-theme="dark"] .bg-grid {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}
[data-theme="dark"] .blob { opacity: 0.22; }

/* Bileşenler */
[data-theme="dark"] .tag { background: rgba(255, 255, 255, 0.06); border-color: var(--line); }
[data-theme="dark"] .btn--outline { border-color: rgba(255, 255, 255, 0.3); }
[data-theme="dark"] .btn--outline:hover { border-color: #fff; }
[data-theme="dark"] .card::after { box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.6); }
[data-theme="dark"] .map-box { border-color: rgba(255, 255, 255, 0.25); }
[data-theme="dark"] .site-footer { background: #0E2033; }
[data-theme="dark"] .form-status { color: var(--ink-soft); }

/* Mobil menü paneli */
@media (max-width: 1024px) {
  [data-theme="dark"] .main-nav { background: #0F2136; box-shadow: -20px 0 60px rgba(0, 0, 0, 0.5); }
}

/* No-JS fallback: içerik asla gizli kalmaz (initial state'ler JS ile set edilir) */
html.no-js [data-anim],
html.no-js [data-hero],
html.no-js .hero-title .line-inner { opacity: 1 !important; transform: none !important; }