/* ═══════════════════════════════════════════════════════════
   WEB TAKIMI — Premium Blue-First Stylesheet
   Zemin: #009FD4 ve tonları | Yazı: Beyaz / Yarı şeffaf beyaz
   ═══════════════════════════════════════════════════════════ */

/* ── 0. CSS TOKENS ─────────────────────────────────────── */
:root {
  /* ---- Marka mavisi skalası ---- */
  --b0:  #e6f7fc;   /* en açık ton — form inputları */
  --b1:  #b3e6f5;   /* açık vurgu */
  --b2:  #009FD4;   /* ANA MARKA */
  --b3:  #0089b8;   /* hover / aktif */
  --b4:  #007aaa;   /* orta koyu */
  --b5:  #005f8a;   /* koyu */
  --b6:  #004a6e;   /* derin */
  --b7:  #003454;   /* en koyu — footer bg */
  --b8:  #001e33;   /* neredeyse siyah — header bg */

  /* ---- Semantik tokenlar ---- */
  --bg-root:      var(--b2);      /* sayfanın ana zemini */
  --bg-hero:      var(--b7);      /* hero zemini */
  --bg-section-a: var(--b4);      /* hizmetler */
  --bg-section-b: var(--b5);      /* neden biz */
  --bg-section-c: var(--b4);      /* referanslar */
  --bg-contact:   var(--b6);      /* iletişim */
  --bg-footer:    var(--b8);      /* footer */

  /* Kartlar — mavi zemin üstünde cam etkisi */
  --card-bg:      rgba(255,255,255,0.10);
  --card-bg-h:    rgba(255,255,255,0.18);
  --card-border:  rgba(255,255,255,0.18);
  --card-border-h:rgba(255,255,255,0.38);

  /* Beyaz cam — iletişim formu gibi ağır içerik için */
  --glass-white:  rgba(255,255,255,0.92);
  --glass-light:  rgba(255,255,255,0.14);

  /* Yazı */
  --text-white:   #ffffff;
  --text-dim:     rgba(255,255,255,0.72);
  --text-muted:   rgba(255,255,255,0.45);
  --text-on-card: #ffffff;
  --text-dark:    #0a1628;      /* beyaz kart içindeki koyu metin */
  --text-dark-2:  #3a5568;

  /* Gradyanlar */
  --grad-deep:     linear-gradient(160deg, var(--b7) 0%, var(--b6) 60%, var(--b5) 100%);
  --grad-brand:    linear-gradient(135deg, var(--b2) 0%, var(--b4) 100%);
  --grad-btn:      linear-gradient(135deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0.08) 100%);
  --grad-btn-h:    linear-gradient(135deg, rgba(255,255,255,0.32) 0%, rgba(255,255,255,0.14) 100%);
  --grad-cta:      linear-gradient(135deg, #ffffff 0%, #e6f7fc 100%);

  /* Gölgeler */
  --shadow-card:  0 8px 32px rgba(0,0,0,0.18);
  --shadow-card-h:0 20px 56px rgba(0,0,0,0.28);
  --shadow-white: 0 8px 36px rgba(0,159,212,0.35);
  --shadow-glow:  0 0 60px rgba(0,159,212,0.35);

  /* Tipografi */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Köşe yarıçapları */
  --r-sm:  8px;
  --r-md:  14px;
  --r-lg:  22px;
  --r-xl:  32px;

  /* Geçiş */
  --ease:   cubic-bezier(0.23, 1, 0.32, 1);
  --t-fast: 0.2s;
  --t-mid:  0.4s;
}

/* ── 1. RESET & BASE ────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-root);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.d-none-sm { display: initial; }
@media (max-width: 640px) { .d-none-sm { display: none; } }

/* ── 2. PRELOADER ───────────────────────────────────────── */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--b7);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
#preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.preloader-inner { display: flex; flex-direction: column; align-items: center; gap: 32px; }

.preloader-logo {
  width: 96px;
  filter: brightness(0) invert(1);
  animation: preloaderPulse 1.5s ease-in-out infinite;
}
@keyframes preloaderPulse {
  0%,100% { transform: scale(1);     filter: brightness(0) invert(1) drop-shadow(0 0 14px rgba(255,255,255,0.5)); }
  50%      { transform: scale(1.08); filter: brightness(0) invert(1) drop-shadow(0 0 28px rgba(255,255,255,0.9)); }
}

.preloader-bar {
  width: 200px;
  height: 2px;
  border-radius: 99px;
  background: rgba(255,255,255,0.15);
  overflow: hidden;
}
.preloader-fill {
  height: 100%;
  background: #ffffff;
  animation: preloaderFill 1.6s var(--ease) forwards;
  border-radius: 99px;
}
@keyframes preloaderFill { from { width: 0 } to { width: 100% } }

/* ── 3. HEADER ──────────────────────────────────────────── */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  transition: background var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease);
}

#header.scrolled {
  background: rgba(0, 52, 84, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 4px 24px rgba(0,0,0,0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo-img {
  height: 34px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter var(--t-fast), transform var(--t-fast), opacity var(--t-fast);
  opacity: 0.92;
}
.logo:hover .logo-img {
  opacity: 1;
  transform: translateY(-1px);
  filter: brightness(0) invert(1) drop-shadow(0 2px 10px rgba(255,255,255,0.3));
}

/* ── SIDE DRAWER OVERLAY ────────────────────────────────── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,20,40,0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.nav-overlay.visible {
  opacity: 1;
  pointer-events: all;
}

/* ── SIDE DRAWER ────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; right: -340px;
  width: 300px;
  height: 100dvh;
  background: linear-gradient(160deg, #001e33 0%, #003454 60%, #005070 100%);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-left: 1px solid rgba(255,255,255,0.1);
  box-shadow: -12px 0 48px rgba(0,0,0,0.45);
  z-index: 999;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: right 0.42s var(--ease);
}
#nav.open { right: 0; }

/* Drawer header */
.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.drawer-logo {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}
.drawer-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.75);
  font-size: 1.2rem;
  transition: background var(--t-fast), color var(--t-fast);
  border: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
}
.drawer-close:hover {
  background: rgba(255,255,255,0.14);
  color: #fff;
}

/* Nav links inside drawer */
.nav-list {
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  gap: 4px;
  flex: 1;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255,255,255,0.65);
  padding: 13px 16px;
  border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast), padding-left var(--t-fast);
  border-left: 2px solid transparent;
}
.nav-link::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--b2);
  flex-shrink: 0;
  opacity: 0.5;
  transition: opacity var(--t-fast), transform var(--t-fast);
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.07);
  padding-left: 20px;
}
.nav-link:hover::before { opacity: 1; transform: scale(1.4); }
.nav-link.active {
  color: #fff;
  background: rgba(0,159,212,0.15);
  border-left-color: var(--b2);
  font-weight: 600;
}
.nav-link.active::before { opacity: 1; background: var(--b2); }

/* Drawer footer CTA */
.drawer-footer {
  padding: 20px 24px 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
}
.drawer-footer .btn {
  width: 100%;
  justify-content: center;
  text-align: center;
}

/* Header sağ taraf: hamburger + teklif al — her zaman görünür */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-header {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 9px 22px;
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.14);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.28);
  letter-spacing: 0.01em;
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.btn-header:hover {
  background: rgba(255,255,255,0.24);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-2px);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
  transition: background var(--t-fast);
}
.menu-toggle:hover { background: rgba(255,255,255,0.08); }
.menu-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: transform var(--t-fast), opacity var(--t-fast), width var(--t-fast);
}
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; width: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 480px) {
  .btn-header { padding: 8px 16px; font-size: 0.82rem; }
}

/* ── 4. BUTTONS ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: var(--r-md);
  transition: all var(--t-fast) var(--ease);
  cursor: pointer;
  letter-spacing: 0.01em;
}

/* Birincil buton: beyaz, mavi yazı */
.btn-primary {
  background: #ffffff;
  color: var(--b5);
  padding: 14px 30px;
  font-size: 0.95rem;
  box-shadow: 0 6px 28px rgba(0,0,0,0.22);
}
.btn-primary:hover {
  background: var(--b0);
  transform: translateY(-3px);
  box-shadow: 0 16px 44px rgba(0,0,0,0.3);
}

/* Ghost buton: cam efektli */
.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: var(--text-white);
  padding: 13px 29px;
  font-size: 0.95rem;
  border: 1.5px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-3px);
}

.btn-full { width: 100%; justify-content: center; }
.btn-loading { display: none; }
.btn.loading .btn-text    { opacity: 0; }
.btn.loading .btn-loading { display: inline-flex; }
.btn.loading .btn-icon    { display: none; }

/* ── 5. SECTION SHARED ──────────────────────────────────── */
section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 80px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 5px 16px;
  border-radius: 99px;
  margin-bottom: 20px;
  backdrop-filter: blur(6px);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.18;
  color: var(--text-white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-title em {
  font-style: normal;
  color: rgba(255,255,255,0.65);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* Bölüm watermark amblemi */
.section-watermark {
  position: absolute;
  top: 50%; left: -80px;
  transform: translateY(-50%);
  width: 320px;
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
  filter: brightness(0) invert(1);
}
.section-watermark-right {
  left: auto; right: -80px;
}

/* ── 6. SCROLL REVEAL ───────────────────────────────────── */
.reveal-up,
.reveal-fade {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  transition-delay: var(--delay, 0s);
}
.reveal-fade { transform: none; }
.revealed {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ── 7. HERO ────────────────────────────────────────────── */
#hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-deep);
  padding-top: 100px;
  padding-bottom: 80px;
  position: relative;
}

/* Hafif iç ışık efekti */
#hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 15% 50%, rgba(0,159,212,0.20) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 85% 30%, rgba(0,120,180,0.14) 0%, transparent 55%);
  pointer-events: none;
  z-index: 1;
}

/* Mesh canvas */
#hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.8;
}

/* Glow orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  z-index: 1;
}
.glow-orb-1 {
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 65%);
  top: -300px; left: 50%;
  transform: translateX(-50%);
  animation: orbFloat1 14s ease-in-out infinite;
}
.glow-orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,159,212,0.18) 0%, transparent 65%);
  bottom: 0; left: -80px;
  animation: orbFloat2 17s ease-in-out infinite;
}
.glow-orb-3 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(0,159,212,0.14) 0%, transparent 65%);
  top: 120px; right: 0;
  animation: orbFloat3 11s ease-in-out infinite;
}
@keyframes orbFloat1 { 0%,100%{transform:translateX(-50%) translateY(0);} 50%{transform:translateX(-50%) translateY(-32px);} }
@keyframes orbFloat2 { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-20px);} }
@keyframes orbFloat3 { 0%,100%{transform:translateY(0);} 50%{transform:translateY(22px);} }

/* Büyük yüzen amblem — sağ tarafta */
.hero-amblem-float {
  position: absolute;
  right: 4%;
  top: 50%;
  transform: translateY(-50%);
  width: min(36vw, 390px);
  z-index: 2;
  pointer-events: none;
  user-select: none;
  animation: heroAmblemFloat 10s ease-in-out infinite;
  filter: brightness(0) invert(1) drop-shadow(0 24px 60px rgba(0,0,0,0.35));
  opacity: 0.14;
}
@keyframes heroAmblemFloat {
  0%,100% { transform: translateY(-50%) rotate(-2deg); }
  50%     { transform: translateY(calc(-50% - 22px)) rotate(2deg); }
}
@media (max-width: 900px) {
  .hero-amblem-float { width: min(50vw, 260px); right: 1%; opacity: 0.08; }
}
@media (max-width: 640px) {
  .hero-amblem-float { width: 160px; right: -20px; opacity: 0.06; top: 60px; transform: none; animation: none; }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 680px;
  text-align: left;
}
@media (max-width: 900px) { .hero-content { text-align: center; max-width: 640px; } }

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 7px 18px;
  border-radius: 99px;
  margin-bottom: 32px;
  backdrop-filter: blur(8px);
}
.badge-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 8px rgba(255,255,255,0.9);
  animation: dotBlink 2.2s ease-in-out infinite;
}
@keyframes dotBlink { 0%,100%{opacity:1;} 50%{opacity:0.3;} }

/* Başlık */
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6.5vw, 5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--text-white);
  margin-bottom: 24px;
  text-shadow: 0 2px 24px rgba(0,0,0,0.2);
}
.hero-title em { font-style: normal; color: rgba(255,255,255,0.75); }
.title-highlight {
  color: var(--text-white);
  position: relative;
  display: inline-block;
}
.title-highlight::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 0; right: 0;
  height: 4px;
  background: rgba(255,255,255,0.4);
  border-radius: 2px;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  color: var(--text-dim);
  line-height: 1.78;
  margin-bottom: 44px;
  max-width: 540px;
}
@media (max-width: 900px) { .hero-sub { margin-left: auto; margin-right: auto; } }

.hero-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 64px;
}
@media (max-width: 900px) { .hero-cta { justify-content: center; } }

/* İstatistik çubuğu */
.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 0;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--r-xl);
  padding: 24px 36px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
  flex-wrap: wrap;
}
@media (max-width: 900px) { .hero-stats { display: flex; justify-content: center; } }

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 0 32px;
}
.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1;
}
.stat-suffix {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: rgba(255,255,255,0.75);
  vertical-align: top;
}
.stat-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
.stat-divider {
  width: 1px; height: 44px;
  background: rgba(255,255,255,0.14);
  flex-shrink: 0;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.scroll-line {
  width: 1px; height: 44px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollDrop 2s ease-in-out infinite;
}
@keyframes scrollDrop { 0%,100%{transform:scaleY(1);opacity:1;} 50%{transform:scaleY(0.45);opacity:0.3;} }

@media (max-width: 640px) {
  .hero-stats { padding: 18px 14px; gap: 12px; }
  .stat-item  { padding: 0 12px; }
  .stat-divider { height: 32px; }
}

/* ── 8. HİZMETLER ───────────────────────────────────────── */
#hizmetler {
  background: var(--bg-section-a);
}
#hizmetler::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.12);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 960px) { .services-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .services-grid { grid-template-columns: 1fr; } }

/* --- Hizmet kartı (cam) --- */
.service-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  padding: 38px 32px;
  overflow: hidden;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-mid) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              background var(--t-mid),
              border-color var(--t-mid);
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: rgba(255,255,255,0.4);
  opacity: 0;
  transition: opacity var(--t-mid);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-card-h);
  background: var(--card-bg-h);
  border-color: var(--card-border-h);
}
.service-card:hover::before { opacity: 1; }

/* Hover'da amblem */
.card-amblem {
  position: absolute;
  bottom: -12px; right: -12px;
  width: 88px;
  opacity: 0;
  pointer-events: none;
  filter: brightness(0) invert(1);
  transition: opacity var(--t-mid);
}
.service-card:hover .card-amblem { opacity: 0.12; }

/* İkon wrap */
.service-icon-wrap {
  width: 54px; height: 54px;
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.35rem;
  color: var(--text-white);
  transition: background var(--t-mid), border-color var(--t-mid), box-shadow var(--t-mid);
}
.service-card:hover .service-icon-wrap {
  background: rgba(255,255,255,0.24);
  border-color: rgba(255,255,255,0.45);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 0.91rem;
  color: var(--text-dim);
  line-height: 1.68;
  margin-bottom: 24px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-display);
  font-size: 0.84rem;
  font-weight: 600;
  color: rgba(255,255,255,0.75);
  transition: gap var(--t-fast), color var(--t-fast);
}
.card-link:hover { gap: 10px; color: var(--text-white); }

/* ── 9. NEDEN BİZ ───────────────────────────────────────── */
#neden-biz {
  background: var(--bg-section-b);
}
#neden-biz::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.08);
}

.whyus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
@media (max-width: 960px) { .whyus-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .whyus-grid { grid-template-columns: 1fr; } }

.whyus-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  padding: 38px 28px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid),
              background var(--t-mid), border-color var(--t-mid);
}
.whyus-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-h);
  background: var(--card-bg-h);
  border-color: var(--card-border-h);
}

/* Sol vurgu çizgisi */
.whyus-card::after {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 3px;
  background: rgba(255,255,255,0.5);
  border-radius: 0 3px 3px 0;
  opacity: 0;
  transition: opacity var(--t-mid);
}
.whyus-card:hover::after { opacity: 1; }

.whyus-num {
  position: absolute;
  top: 16px; right: 20px;
  font-family: var(--font-display);
  font-size: 3.4rem;
  font-weight: 800;
  color: rgba(255,255,255,0.06);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}
.whyus-icon {
  font-size: 1.6rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
  display: block;
  transition: transform var(--t-mid);
}
.whyus-card:hover .whyus-icon { transform: scale(1.12) rotate(-4deg); }

.whyus-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 10px;
}
.whyus-card p {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.66;
}

/* ── 10. REFERANSLAR ────────��───────────────────────────── */
#referanslar {
  background: var(--bg-section-c);
}
#referanslar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.1);
}

.refs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 64px;
}
@media (max-width: 768px) { .refs-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .refs-grid { grid-template-columns: repeat(2, 1fr); } }

.ref-item {
  border-radius: var(--r-md);
  overflow: hidden;
  transition: transform var(--t-mid) var(--ease), box-shadow var(--t-mid);
}
.ref-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-h);
}
.ref-item img {
  width: 100%;
  filter: grayscale(1) brightness(0) invert(1) opacity(0.4);
  transition: filter var(--t-mid);
}
.ref-item:hover img { filter: grayscale(0) brightness(0) invert(1) opacity(0.8); }

.ref-placeholder {
  background: var(--card-bg);
  border: 1.5px dashed rgba(255,255,255,0.18);
  border-radius: var(--r-md);
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  transition: background var(--t-mid), border-color var(--t-mid);
}
.ref-placeholder span {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-muted);
}
.ref-item:hover .ref-placeholder {
  background: var(--card-bg-h);
  border-color: rgba(255,255,255,0.35);
}
.ref-item:hover .ref-placeholder span { color: var(--text-dim); }

/* Testimonial */
.testimonial-wrap { max-width: 760px; margin: 0 auto; }

.testimonial-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--r-xl);
  padding: 52px 48px;
  position: relative;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
@media (max-width: 560px) { .testimonial-card { padding: 32px 24px; } }

.quote-icon {
  font-size: 3rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
  line-height: 1;
}
.testimonial-card blockquote {
  font-size: 1.1rem;
  color: var(--text-dim);
  line-height: 1.82;
  font-style: italic;
  margin-bottom: 32px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
}
.author-avatar {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: rgba(255,255,255,0.16);
  border: 1.5px solid rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.testimonial-author strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text-white);
}
.testimonial-author span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ── 11. İLETİŞİM ───────────────────────────────────────── */
#iletisim {
  background: var(--bg-contact);
}
#iletisim::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(255,255,255,0.08);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.55fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

/* İletişim bilgi kartı — cam */
.info-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--r-xl);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.info-card h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 30px;
}

.info-list { display: flex; flex-direction: column; gap: 22px; }
.info-list li { display: flex; align-items: flex-start; gap: 14px; }

.info-icon {
  width: 42px; height: 42px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  flex-shrink: 0;
  margin-top: 2px;
  transition: background var(--t-fast);
}
.info-list li:hover .info-icon {
  background: rgba(255,255,255,0.2);
}

.info-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 3px;
}
.info-value {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-white);
  transition: color var(--t-fast);
}
.info-value:hover { color: var(--text-dim); }

/* İletişim formu — beyaz kart */
.contact-form {
  background: var(--glass-white);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: var(--r-xl);
  padding: 44px 40px;
  box-shadow: 0 16px 56px rgba(0,0,0,0.22);
}
@media (max-width: 560px) { .contact-form { padding: 28px 20px; } }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dark-2);
  letter-spacing: 0.02em;
}
.form-group label span { color: var(--b3); }

.form-group input,
.form-group select,
.form-group textarea {
  background: #f4fbfe;
  border: 1.5px solid rgba(0,159,212,0.18);
  border-radius: var(--r-md);
  padding: 13px 16px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--text-dark);
  transition: border-color var(--t-fast), background var(--t-fast), box-shadow var(--t-fast);
  outline: none;
  -webkit-appearance: none;
}
.form-group select option { background: #fff; color: var(--text-dark); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: #94a3b8; }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--b2);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0,159,212,0.12);
}
.form-group input.error,
.form-group textarea.error { border-color: #ef4444; }

.field-error { font-size: 0.78rem; color: #ef4444; min-height: 1em; }

/* Form submit butonu — mavi */
.contact-form .btn-primary {
  background: var(--grad-brand);
  color: #ffffff;
  box-shadow: 0 8px 28px rgba(0,100,160,0.28);
}
.contact-form .btn-primary:hover {
  background: linear-gradient(135deg, var(--b3) 0%, var(--b5) 100%);
  box-shadow: 0 14px 40px rgba(0,100,160,0.4);
  transform: translateY(-2px);
}

#form-message {
  margin-top: 16px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-family: var(--font-display);
  font-weight: 500;
  display: none;
}
#form-message.success {
  background: rgba(34,197,94,0.08);
  border: 1px solid rgba(34,197,94,0.28);
  color: #15803d;
  display: block;
}
#form-message.error {
  background: rgba(239,68,68,0.07);
  border: 1px solid rgba(239,68,68,0.2);
  color: #dc2626;
  display: block;
}

/* ── 12. FOOTER ─────────────────────────────────────────── */
#footer {
  position: relative;
  background: var(--bg-footer);
  padding: 80px 0 0;
  overflow: hidden;
}

/* Watermark */
.footer-watermark {
  position: absolute;
  bottom: -80px; left: 50%;
  transform: translateX(-50%);
  width: 580px;
  opacity: 0.04;
  pointer-events: none;
  filter: brightness(0) invert(1) blur(3px);
}

.footer-inner { position: relative; z-index: 1; }

.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 2fr;
  gap: 60px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
}

.footer-logo {
  height: 32px;
  width: auto;
  margin-bottom: 18px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.78;
  max-width: 290px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
@media (max-width: 560px) { .footer-nav { grid-template-columns: 1fr 1fr; } }

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 0.87rem;
  color: rgba(255,255,255,0.35);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--t-fast), gap var(--t-fast);
}
.footer-col a:hover { color: rgba(255,255,255,0.75); gap: 12px; }
.footer-col a i { font-size: 0.74rem; color: rgba(255,255,255,0.3); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
}
.footer-bottom p { font-size: 0.81rem; color: rgba(255,255,255,0.25); }
.footer-bottom a { color: rgba(255,255,255,0.45); transition: color var(--t-fast); }
.footer-bottom a:hover { color: rgba(255,255,255,0.8); }

/* ── 13. FLOATING BUTTONS ───────────────────────────────── */
.whatsapp-float {
  position: fixed;
  bottom: 80px; right: 24px;
  z-index: 800;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--b2), var(--b4));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 6px 24px rgba(0,159,212,0.45);
  border: 1.5px solid rgba(255,255,255,0.2);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.whatsapp-float:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 14px 36px rgba(0,159,212,0.6);
}
.float-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  background: var(--b8);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--r-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast);
}
.whatsapp-float:hover .float-tooltip { opacity: 1; }

.back-to-top {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 800;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  border: 1.5px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.8);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 4px 18px rgba(0,0,0,0.25);
  backdrop-filter: blur(8px);
  transition: opacity var(--t-mid), transform var(--t-fast), background var(--t-fast);
  transform: translateY(10px);
}
.back-to-top.visible  { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover    { background: rgba(255,255,255,0.22); color: #fff; transform: translateY(-3px); }

/* ── 14. MOUSE GLOW ─────────────────────────────────────── */
#mouse-glow {
  pointer-events: none;
  position: fixed;
  z-index: 0;
  width: 520px; height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: left 0.1s linear, top 0.1s linear;
  will-change: left, top;
}