/* ============================================================
   FK BİLİŞİM — Ana Stil Dosyası
   ============================================================ */

:root {
  --bg-deep:      #060c18;
  --bg-dark:      #0a1020;
  --bg-mid:       #0e1628;
  --bg-card:      #111827;
  --bg-light:     #f2f6fc;
  --bg-light-alt: #e8eef8;

  --blue-primary: #1a6fff;
  --blue-mid:     #3d83ff;
  --blue-light:   #6da4ff;
  --cyan:         #00d4ff;
  --cyan-dim:     rgba(0, 212, 255, 0.15);

  --text-primary:  #eaf0fa;
  --text-secondary:#a8b8d0;
  --text-muted:    #5a6e8a;
  --text-dark:     #0d1525;
  --text-dark-sub: #3d5070;

  --border:        rgba(26, 111, 255, 0.18);
  --border-light:  rgba(26, 111, 255, 0.08);
  --glow:          rgba(26, 111, 255, 0.35);
  --glow-cyan:     rgba(0, 212, 255, 0.25);

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-card: 0 4px 24px rgba(0,0,0,0.35), 0 1px 3px rgba(0,0,0,0.2);
  --shadow-glow: 0 0 40px rgba(26, 111, 255, 0.2);

  --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --max-w: 1200px;
  --section-pad: clamp(64px, 8vw, 112px);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--blue-primary); border-radius: 3px; }
::selection { background: rgba(26,111,255,0.35); color: #fff; }

/* ── Focus ── */
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: var(--radius-sm); }

/* ── Typography ── */
h1,h2,h3,h4,h5 {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

/* ── Utility ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 clamp(20px,4vw,48px); }
.sr-only { position:absolute; width:1px; height:1px; padding:0; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 16px;
}
.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--cyan);
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ── Divider ── */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue-primary), transparent);
  opacity: 0.3;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 clamp(20px,4vw,48px);
  height: 136px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(8, 14, 26, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0;
  transition: opacity var(--transition);
}
.nav-logo:hover { opacity: 0.85; }
.nav-logo img { height: 120px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--blue-primary);
  color: #fff;
  box-shadow: 0 0 20px rgba(26,111,255,0.3);
}
.btn-primary:hover {
  background: var(--blue-mid);
  box-shadow: 0 0 32px rgba(26,111,255,0.5);
  transform: translateY(-1px);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  color: var(--text-secondary);
  border: 1px solid var(--border);
  background: transparent;
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: rgba(26,111,255,0.4);
  background: rgba(26,111,255,0.06);
}

.btn-outline {
  color: var(--cyan);
  border: 1px solid rgba(0,212,255,0.3);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(0,212,255,0.08);
  border-color: var(--cyan);
  box-shadow: 0 0 20px var(--glow-cyan);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(6, 12, 24, 0.98);
  backdrop-filter: blur(24px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.mobile-menu.open { opacity: 1; pointer-events: all; display: flex; }
.mobile-menu a {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 700;
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
}
.mobile-menu a:hover { color: var(--text-primary); background: rgba(26,111,255,0.1); }
.mobile-menu-divider { width: 40px; height: 1px; background: var(--border); margin: 16px 0; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px clamp(20px,4vw,48px) 80px;
}

/* Background canvas */
#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.4;
  pointer-events: none;
}

/* Radial spotlight */
.hero-spotlight {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  background: radial-gradient(ellipse at center,
    rgba(26,111,255,0.12) 0%,
    rgba(0,212,255,0.04) 40%,
    transparent 70%);
  pointer-events: none;
}

/* Grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,111,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,111,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-content {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 100px;
  padding: 6px 16px 6px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--cyan);
  margin-bottom: 28px;
  width: fit-content;
  letter-spacing: 0.04em;
}
.hero-badge-dot {
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%,100% { box-shadow: 0 0 0 0 rgba(0,212,255,0.5); }
  50% { box-shadow: 0 0 0 6px rgba(0,212,255,0); }
}

.hero-title {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-primary);
  font-family: 'IBM Plex Mono', monospace;
}
.hero-title .accent {
  background: linear-gradient(135deg, var(--blue-primary), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 40px;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
}
.stat-item {}
.stat-number {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-number span { color: var(--blue-primary); }
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* Hero visual: circuit/tech illustration */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-visual-inner {
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1;
  position: relative;
}
.hero-visual svg {
  width: 100%;
  height: 100%;
}

/* Orbit rings */
.orbit-ring {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(26,111,255,0.15);
}
.orbit-ring:nth-child(1) { width: 65%; height: 65%; animation: orbit-spin 20s linear infinite; }
.orbit-ring:nth-child(2) { width: 85%; height: 85%; animation: orbit-spin 30s linear infinite reverse; }
.orbit-ring:nth-child(3) { width: 100%; height: 100%; animation: orbit-spin 45s linear infinite; }

.orbit-dot {
  position: absolute;
  width: 8px; height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  top: 0; left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px var(--cyan);
}
.orbit-dot-blue {
  background: var(--blue-primary);
  box-shadow: 0 0 12px var(--blue-primary);
}

@keyframes orbit-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Center icon */
.hero-icon-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 120px; height: 120px;
  background: linear-gradient(135deg, rgba(26,111,255,0.2), rgba(0,212,255,0.1));
  border: 1px solid rgba(26,111,255,0.3);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  box-shadow: 0 0 60px rgba(26,111,255,0.25), inset 0 1px 0 rgba(255,255,255,0.08);
  animation: float-icon 4s ease-in-out infinite;
}
@keyframes float-icon {
  0%,100% { transform: translate(-50%, -50%) translateY(0); }
  50% { transform: translate(-50%, -50%) translateY(-12px); }
}

/* Floating tech badges */
.tech-badge {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  color: var(--text-secondary);
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}
.tech-badge-icon { font-size: 18px; }
.tech-badge:nth-child(5) { top: 8%; left: -8%; animation: float-badge1 5s ease-in-out infinite; }
.tech-badge:nth-child(6) { top: 20%; right: -12%; animation: float-badge2 6s ease-in-out infinite 1s; }
.tech-badge:nth-child(7) { bottom: 20%; left: -14%; animation: float-badge1 7s ease-in-out infinite 0.5s; }
.tech-badge:nth-child(8) { bottom: 8%; right: -10%; animation: float-badge2 5.5s ease-in-out infinite 1.5s; }

@keyframes float-badge1 {
  0%,100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
}
@keyframes float-badge2 {
  0%,100% { transform: translateY(0) rotate(1deg); }
  50% { transform: translateY(-10px) rotate(-1deg); }
}

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  z-index: 1;
  animation: fade-up 1s ease 1.5s both;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--blue-primary), transparent);
  animation: scroll-line 1.8s ease-in-out infinite;
}
@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ============================================================
   HİZMETLER (SERVICES)
   ============================================================ */
.services {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-dark);
}

.services-header {
  max-width: var(--max-w);
  margin: 0 auto 64px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
}

.services-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  cursor: default;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-card), 0 0 40px rgba(26,111,255,0.08);
  transform: translateY(-4px);
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 24px;
  position: relative;
}
.service-icon.blue {
  background: rgba(26,111,255,0.12);
  color: var(--blue-light);
  box-shadow: 0 0 24px rgba(26,111,255,0.15);
}
.service-icon.cyan {
  background: rgba(0,212,255,0.1);
  color: var(--cyan);
  box-shadow: 0 0 24px rgba(0,212,255,0.12);
}
.service-icon.indigo {
  background: rgba(99,102,241,0.12);
  color: #a5b4fc;
  box-shadow: 0 0 24px rgba(99,102,241,0.15);
}

.service-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.service-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.service-list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--blue-primary);
  flex-shrink: 0;
}
.service-card:hover .service-list li { color: var(--text-secondary); }

/* Featured service */
.service-card.featured {
  background: linear-gradient(135deg, rgba(26,111,255,0.1), rgba(0,212,255,0.05));
  border-color: rgba(26,111,255,0.25);
  grid-row: span 2;
}
.service-card.featured .service-title { font-size: 22px; }

/* ============================================================
   HAKKIMIZDA
   ============================================================ */
.about {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-light);
  color: var(--text-dark);
}

.about-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about .section-label { color: var(--blue-primary); }
.about .section-label::before { background: var(--blue-primary); }
.about .section-title { color: var(--text-dark); }
.about .section-desc { color: var(--text-dark-sub); max-width: 100%; }

.about-text { margin-top: 20px; font-size: 15px; color: var(--text-dark-sub); line-height: 1.75; }

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}
.value-item {
  background: #fff;
  border: 1px solid var(--bg-light-alt);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: box-shadow var(--transition);
}
.value-item:hover { box-shadow: 0 4px 24px rgba(26,111,255,0.1); }
.value-icon {
  font-size: 22px;
  margin-bottom: 10px;
}
.value-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 4px;
}
.value-text { font-size: 13px; color: var(--text-dark-sub); line-height: 1.6; }

/* About visual side */
.about-visual {
  position: relative;
}
.about-card-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-info-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  box-shadow: 0 4px 32px rgba(26,111,255,0.08), 0 1px 4px rgba(0,0,0,0.06);
  border: 1px solid rgba(26,111,255,0.08);
  transition: transform var(--transition), box-shadow var(--transition);
}
.about-info-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 48px rgba(26,111,255,0.14);
}
.about-info-card.accent-card {
  background: linear-gradient(135deg, var(--blue-primary), #0050e6);
  border-color: transparent;
  color: #fff;
}
.card-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.accent-card .card-label { color: rgba(255,255,255,0.6); }
.card-value {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1;
  margin-bottom: 4px;
}
.accent-card .card-value { color: #fff; }
.card-sub { font-size: 13px; color: var(--text-dark-sub); }
.accent-card .card-sub { color: rgba(255,255,255,0.75); }

.card-row {
  display: flex;
  gap: 16px;
}
.card-row .about-info-card { flex: 1; }

/* ============================================================
   NEDEN BİZ (WHY US)
   ============================================================ */
.why-us {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-mid);
}

.why-us-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.why-us-header {
  text-align: center;
  margin-bottom: 64px;
}
.why-us-header .section-label { margin: 0 auto 16px; }
.why-us-header .section-desc { margin: 0 auto; text-align: center; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.02);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.feature-item:hover {
  border-color: rgba(26,111,255,0.25);
  background: rgba(26,111,255,0.04);
  transform: translateY(-4px);
}
.feature-icon-wrap {
  width: 60px; height: 60px;
  margin: 0 auto 20px;
  background: rgba(26,111,255,0.1);
  border: 1px solid rgba(26,111,255,0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  transition: box-shadow var(--transition);
}
.feature-item:hover .feature-icon-wrap {
  box-shadow: 0 0 24px rgba(26,111,255,0.25);
}
.feature-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.feature-text { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

/* ============================================================
   PROJELER
   ============================================================ */
.projects {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-dark);
}

.projects-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.projects-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 24px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.project-card:hover {
  border-color: rgba(26,111,255,0.3);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
}
.project-card.featured {
  grid-column: span 2;
}

.project-thumbnail {
  height: 200px;
  background: linear-gradient(135deg, var(--bg-mid), var(--bg-deep));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  position: relative;
  overflow: hidden;
}
.project-card.featured .project-thumbnail { height: 240px; }
.project-thumbnail::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,111,255,0.08), rgba(0,212,255,0.04));
}

.project-body { padding: 28px; }
.project-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.project-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(26,111,255,0.12);
  color: var(--blue-light);
  border: 1px solid rgba(26,111,255,0.2);
}
.project-tag.cyan {
  background: rgba(0,212,255,0.08);
  color: var(--cyan);
  border-color: rgba(0,212,255,0.2);
}
.project-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.project-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.65; }

/* ============================================================
   TEKNOLOJİLER
   ============================================================ */
.technologies {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-light);
  color: var(--text-dark);
}

.technologies-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.technologies .section-label { color: var(--blue-primary); }
.technologies .section-label::before { background: var(--blue-primary); }
.technologies .section-title { color: var(--text-dark); }

.tech-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 48px;
  gap: 32px;
  flex-wrap: wrap;
}

.tech-categories {
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.tech-category-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tech-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--bg-light-alt);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
  transition: all var(--transition);
}
.tech-pill:hover {
  border-color: var(--blue-primary);
  box-shadow: 0 0 16px rgba(26,111,255,0.12);
  color: var(--blue-primary);
}
.tech-pill-icon { font-size: 16px; }

/* ============================================================
   İLETİŞİM
   ============================================================ */
.contact {
  padding: var(--section-pad) clamp(20px,4vw,48px);
  background: var(--bg-dark);
}

.contact-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; gap: 32px; }

.contact-methods { display: flex; flex-direction: column; gap: 16px; }
.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-method:hover {
  border-color: var(--border);
  box-shadow: 0 4px 24px rgba(26,111,255,0.08);
}
.contact-method-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(26,111,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  color: var(--blue-light);
}
.contact-method-label { font-size: 11px; color: var(--text-muted); margin-bottom: 3px; letter-spacing: 0.06em; font-weight: 600; text-transform: uppercase; }
.contact-method-value { font-size: 14px; color: var(--text-primary); font-weight: 500; }

/* Contact form */
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); letter-spacing: 0.04em; }
.form-input, .form-textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
  width: 100%;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--blue-primary);
  box-shadow: 0 0 0 3px rgba(26,111,255,0.15);
}
.form-textarea { min-height: 130px; }
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%235a6e8a' d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}
.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  font-weight: 700;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: var(--blue-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 0 24px rgba(26,111,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.form-submit:hover {
  background: var(--blue-mid);
  box-shadow: 0 0 40px rgba(26,111,255,0.5);
  transform: translateY(-1px);
}
.form-submit:active { transform: translateY(0); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-deep);
  border-top: 1px solid var(--border-light);
  padding: 56px clamp(20px,4vw,48px) 32px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 32px;
}

.footer-brand { }
.footer-logo { margin-bottom: 16px; }
.footer-logo img { height: 48px; width: auto; }
.footer-tagline { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 24px; max-width: 280px; }
.footer-socials { display: flex; gap: 10px; }
.social-link {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-muted);
  transition: all var(--transition);
}
.social-link:hover {
  color: var(--blue-light);
  border-color: var(--border);
  background: rgba(26,111,255,0.08);
}

.footer-col-title {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 18px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-copy { font-size: 13px; color: var(--text-muted); }
.footer-copy a { color: var(--blue-light); }
.footer-legal { display: flex; gap: 20px; }
.footer-legal a { font-size: 12px; color: var(--text-muted); transition: color var(--transition); }
.footer-legal a:hover { color: var(--text-primary); }

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card.featured { grid-row: auto; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }

  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .hero-subtitle { margin: 0 auto 40px; }
  .hero-actions { justify-content: center; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }

  .about-inner { grid-template-columns: 1fr; gap: 48px; }
  .contact-inner { grid-template-columns: 1fr; gap: 48px; }
  .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: auto; }
  .services-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .features-grid { grid-template-columns: 1fr; }
  .about-values { grid-template-columns: 1fr; }
  .card-row { flex-direction: column; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat-number { font-size: 24px; }
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  #hero-canvas { display: none; }
}