/* ==========================================================================
   GÜNEY ERDEMİR — KURUMSAL CV, PORTFÖY & GİRİŞİMCİ PROFİL WEB SİTESİ
   Tasarım Dili: Kurumsal + Teknoloji (Executive Minimal & Investor-Ready)
   ========================================================================== */

:root {
  /* Ana Renk Paleti (Koyu Ana Renk + Açık Arka Plan + Tek Vurgu Rengi) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-dark: #0B1120;
  --bg-dark-card: #111827;
  --bg-dark-elevated: #1E293B;

  /* Metin Renkleri (WCAG AA/AAA Uyumlu Kontrast) */
  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-on-dark: #F8FAFC;
  --text-on-dark-muted: #94A3B8;

  /* Kurumsal Vurgu Rengi (Executive Cobalt / Tech Blue) */
  --accent: #0F52BA;
  --accent-hover: #0A3D8F;
  --accent-light: #EFF6FF;
  --accent-border: #BFDBFE;
  --accent-bright: #0284C7;

  /* Durum & Doğrulama Renkleri */
  --status-verified-bg: #ECFDF5;
  --status-verified-text: #065F46;
  --status-verified-border: #A7F3D0;
  --status-mvp-bg: #EFF6FF;
  --status-mvp-text: #1E40AF;
  --status-mvp-border: #BFDBFE;
  --status-warning-bg: #FFFBEB;
  --status-warning-text: #92400E;
  --status-warning-border: #FDE68A;

  /* Kenarlıklar ve Gölgeler */
  --border-light: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-dark: #1E293B;
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 6px -1px rgba(15, 23, 42, 0.06), 0 1px 3px -1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 20px -4px rgba(15, 23, 42, 0.08), 0 3px 8px -3px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 16px 32px -6px rgba(15, 23, 42, 0.12), 0 6px 12px -4px rgba(15, 23, 42, 0.05);

  /* Tipografi */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;

  /* Ölçüler ve Boşluklar */
  --container-max: 1220px;
  --header-height: 76px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   TEMEL SIFIRLAMA & ERİŞİLEBİLİRLİK (WCAG 2.2 AA)
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

/* Klavye Navigasyonu Focus Halka Desteği */
:focus-visible {
  outline: 2.5px solid var(--accent-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ==========================================================================
   YERLEŞİM & KONTEYNER
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }
}

.section {
  padding: 76px 0;
  border-bottom: 1px solid var(--border-light);
}

@media (min-width: 992px) {
  .section {
    padding: 96px 0;
  }
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  border-bottom: 1px solid var(--border-dark);
}

/* Bölüm Başlık Hiyerarşisi */
.section-header {
  max-width: 780px;
  margin-bottom: 48px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-dark .section-eyebrow {
  background: rgba(2, 132, 199, 0.15);
  border-color: rgba(56, 189, 248, 0.3);
  color: #38BDF8;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.section-dark .section-title {
  color: var(--text-on-dark);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.section-dark .section-subtitle {
  color: var(--text-on-dark-muted);
}

/* ==========================================================================
   ÜST NAVİGASYON (STICKY HEADER & MOBİL MENÜ)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.brand-logo:hover {
  color: var(--text-primary);
}

.brand-monogram {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--bg-dark);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid var(--border-dark);
  flex-shrink: 0;
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-role-tag {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.main-nav {
  display: none;
}

@media (min-width: 1060px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 22px;
  }
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 2px;
  position: relative;
  transition: color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Dil Değiştirici: TR | EN */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 2px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  min-height: 32px;
  transition: all var(--transition);
}

.lang-btn.active {
  background: var(--bg-dark);
  color: #FFFFFF;
}

/* Mobil Hamburger Butonu */
.mobile-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-light);
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}

@media (min-width: 1060px) {
  .mobile-menu-toggle {
    display: none;
  }
}

/* Mobil Açılır Menü */
.mobile-nav-drawer {
  display: none;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 20px 24px;
  box-shadow: var(--shadow-md);
}

.mobile-nav-drawer.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.mobile-nav-list a {
  display: block;
  padding: 10px 12px;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
}

.mobile-nav-list a:hover {
  background: var(--bg-secondary);
  color: var(--accent);
}

/* ==========================================================================
   BUTON SİSTEMİ
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 11px 20px;
  min-height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-sm {
  font-size: 0.82rem;
  padding: 8px 14px;
  min-height: 36px;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-dark {
  background: var(--bg-dark);
  color: #FFFFFF;
  border-color: var(--bg-dark);
}

.btn-dark:hover {
  background: #1E293B;
  color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-outline:hover {
  background: var(--bg-secondary);
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.05);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.24);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #FFFFFF;
  color: #FFFFFF;
}

/* ==========================================================================
   01 — HERO BÖLÜMÜ (İLK 10-15 SANİYE YATIRIMCI & İŞVEREN ETKİSİ)
   ========================================================================== */
.hero-section {
  background: linear-gradient(180deg, #0B1120 0%, #0F172A 100%);
  color: var(--text-on-dark);
  padding: 64px 0 76px;
  border-bottom: 1px solid var(--border-dark);
  position: relative;
}

@media (min-width: 992px) {
  .hero-section {
    padding: 88px 0 96px;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: center;
}

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.35fr 0.85fr;
    gap: 56px;
  }
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34D399;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
}

.hero-name {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.hero-role {
  font-size: clamp(1.1rem, 2vw, 1.38rem);
  font-weight: 600;
  color: #38BDF8;
  margin-bottom: 20px;
  line-height: 1.4;
}

.hero-lead {
  font-size: 1.06rem;
  color: #CBD5E1;
  line-height: 1.7;
  margin-bottom: 28px;
  max-width: 660px;
}

/* 4 Eksenli Kimlik Etiketleri */
.hero-pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.pillar-badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: #E2E8F0;
  background: rgba(30, 41, 59, 0.85);
  border: 1px solid #334155;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

/* Yatırımcı / İK Hızlı Özet Barı (10 Saniye Testi) */
.hero-metrics-bar {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid #1E293B;
}

@media (min-width: 640px) {
  .hero-metrics-bar {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 0.78rem;
  color: #94A3B8;
  margin-top: 2px;
}

/* Sağ Kart: Profil & Girişim Özeti */
.hero-profile-card {
  background: #111827;
  border: 1px solid #1E293B;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 22px;
  padding-bottom: 20px;
  border-bottom: 1px solid #1E293B;
}

.profile-avatar {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #38BDF8;
  flex-shrink: 0;
}

.profile-meta h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.profile-meta p {
  font-size: 0.85rem;
  color: #94A3B8;
}

.profile-location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #38BDF8;
  margin-top: 6px;
}

.executive-snapshot-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 22px;
}

.executive-snapshot-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  color: #CBD5E1;
  line-height: 1.45;
}

.snapshot-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: #38BDF8;
  background: rgba(2, 132, 199, 0.16);
  padding: 2px 7px;
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}

.hero-card-footer {
  background: #0B1120;
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.hero-card-footer-text {
  font-size: 0.8rem;
  color: #94A3B8;
}

.hero-card-footer-text strong {
  display: block;
  color: #FFFFFF;
  font-size: 0.88rem;
}

/* ==========================================================================
   02 — HAKKIMDA & KARİYER KÖPRÜSÜ (GIDA MÜHENDİSLİĞİ -> TEKNOLOJİ -> GİRİŞİM)
   ========================================================================== */
.evolution-bridge {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 44px;
}

@media (min-width: 992px) {
  .evolution-bridge {
    grid-template-columns: repeat(5, 1fr);
  }
}

.bridge-step {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.bridge-step:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}

.bridge-step-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
}

.bridge-step h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.bridge-step p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.about-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-xs);
}

.about-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   03 — GIDA MÜHENDİSLİĞİ KARİYERİ & TIMELINE DENEYİM
   ========================================================================== */
.career-pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .career-pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.career-pillar-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-xs);
}

.career-pillar-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.career-pillar-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.timeline {
  position: relative;
  padding-left: 28px;
  border-left: 2px solid var(--border-medium);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

@media (min-width: 768px) {
  .timeline {
    padding-left: 36px;
  }
}

.timeline-item {
  position: relative;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.timeline-item:hover {
  border-color: var(--accent-border);
  box-shadow: var(--shadow-sm);
}

.timeline-dot {
  position: absolute;
  left: -36px;
  top: 28px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-secondary);
}

@media (min-width: 768px) {
  .timeline-dot {
    left: -44px;
  }
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid var(--accent-border);
  padding: 4px 10px;
  border-radius: 6px;
}

.timeline-location {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-company {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.timeline-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 768px) {
  .timeline-details {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.timeline-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.timeline-box-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.timeline-list {
  padding-left: 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* ==========================================================================
   04 — EĞİTİM & SERTİFİKALAR
   ========================================================================== */
.edu-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 992px) {
  .edu-cert-grid {
    grid-template-columns: 1fr 1.15fr;
  }
}

.edu-card,
.cert-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-xs);
}

.edu-card + .edu-card,
.cert-card + .cert-card {
  margin-top: 16px;
}

.edu-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.edu-degree {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-light);
  padding: 3px 9px;
  border-radius: 4px;
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.edu-school {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.edu-dept {
  font-size: 0.94rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   05 — YETKİNLİKLER (YILDIZSIZ, KANITA DAYALI PROFESYONEL SINIFLANDIRMA)
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 768px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .skills-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skill-category-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.skill-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.skill-cat-title {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-level-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}

.level-advanced {
  background: var(--status-verified-bg);
  color: var(--status-verified-text);
  border: 1px solid var(--status-verified-border);
}

.level-working {
  background: var(--status-mvp-bg);
  color: var(--status-mvp-text);
  border: 1px solid var(--status-mvp-border);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.skill-tag {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  padding: 5px 11px;
  border-radius: var(--radius-sm);
}

.skill-evidence-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px dashed var(--border-light);
  padding-top: 10px;
}

/* ==========================================================================
   06 — BENİM İKİNCİ EL DEPOM: YATIRIMCI & ÜRÜN VAKA ANALİZİ (CASE STUDY)
   ========================================================================== */
.case-study-wrapper {
  background: #111827;
  border: 1px solid #1E293B;
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}

@media (min-width: 992px) {
  .case-study-wrapper {
    padding: 44px;
  }
}

.case-top-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid #1E293B;
}

.case-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge-verified {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 5px 12px;
  border-radius: 6px;
}

.badge-stage {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(2, 132, 199, 0.2);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 5px 12px;
  border-radius: 6px;
}

/* 7 Adımlı Yatırımcı Akışı: Problem -> Solution -> MVP -> Tech -> Business Model -> Stage -> Next Step */
.case-flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 36px;
}

@media (min-width: 768px) {
  .case-flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .case-flow-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.case-step-card {
  background: #0B1120;
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.case-step-card.highlight {
  border-color: #0284C7;
  background: linear-gradient(180deg, rgba(2, 132, 199, 0.12) 0%, #0B1120 100%);
}

.case-step-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #38BDF8;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.case-step-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.case-step-card p,
.case-step-card ul {
  font-size: 0.85rem;
  color: #CBD5E1;
  line-height: 1.55;
}

.case-step-card ul {
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* Doğrulanmış Sistem Özellikleri Matrisi */
.verified-features-box {
  background: #0B1120;
  border: 1px solid #1E293B;
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 28px;
}

.verified-features-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.verified-features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 640px) {
  .verified-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .verified-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.vf-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.84rem;
  color: #E2E8F0;
  background: #111827;
  border: 1px solid #1E293B;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
}

.vf-check {
  color: #10B981;
  font-weight: 800;
  flex-shrink: 0;
}

/* ==========================================================================
   07 — PROJE PORTFÖYÜ (DİNAMİK FİLTRELENEBİLİR GRID & MODAL)
   ========================================================================== */
.portfolio-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-btn {
  border: 1px solid var(--border-light);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 16px;
  min-height: 40px;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--bg-dark);
  color: #FFFFFF;
  border-color: var(--bg-dark);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1120px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.project-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-border);
}

.project-thumb-wrap {
  position: relative;
  background: var(--bg-dark);
  aspect-ratio: 16 / 9.6;
  overflow: hidden;
  border-bottom: 1px solid var(--border-light);
}

.project-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-thumb {
  transform: scale(1.02);
}

.project-status-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(11, 17, 32, 0.88);
  color: #34D399;
  border: 1px solid rgba(52, 211, 153, 0.4);
  backdrop-filter: blur(4px);
}

.project-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-category {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.project-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.project-ps-summary {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 16px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.project-ps-summary strong {
  color: var(--text-primary);
}

.project-ps-row + .project-ps-row {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--border-light);
}

.project-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  margin-bottom: 18px;
}

.tech-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 4px 8px;
  border-radius: 4px;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border-light);
}

/* ==========================================================================
   08 — GİRİŞİMCİLİK ("FİKİRDEN ÇALIŞAN ÜRÜNE") & TEKNOLOJİ STACK
   ========================================================================== */
.entrepreneur-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 992px) {
  .entrepreneur-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.venture-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-xs);
}

.venture-card-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}

.venture-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.venture-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

/* Teknoloji Stack Kartları */
.stack-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

@media (min-width: 640px) {
  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .stack-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stack-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px;
}

.stack-box h3 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.stack-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stack-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.stack-project-ref {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ==========================================================================
   09 — PDF CV & İLETİŞİM / NETWORKING MERKEZİ
   ========================================================================== */
.cv-banner {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
  border: 1px solid var(--border-dark);
}

@media (min-width: 900px) {
  .cv-banner {
    flex-direction: row;
    align-items: center;
    padding: 40px 44px;
  }
}

.cv-banner h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.cv-banner p {
  font-size: 0.95rem;
  color: #94A3B8;
  max-width: 620px;
}

.cv-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}

/* İletişim Bölümü */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.15fr;
  }
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--accent-light);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-card-value {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-word;
}

.placeholder-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--status-warning-text);
  background: var(--status-warning-bg);
  border: 1px solid var(--status-warning-border);
  padding: 4px 10px;
  border-radius: 6px;
  margin-top: 4px;
}

/* Güvenli İletişim Formu */
.contact-form-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-xs);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  transition: border-color var(--transition), background-color var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  background: var(--bg-primary);
  border-color: var(--accent);
  outline: none;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Honeypot Spam Koruması */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  pointer-events: none;
}

.form-status {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  display: none;
}

.form-status.success {
  display: block;
  background: var(--status-verified-bg);
  color: var(--status-verified-text);
  border: 1px solid var(--status-verified-border);
}

.form-status.error {
  display: block;
  background: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

/* ==========================================================================
   PROJE DETAY MODALI (ERİŞİLEBİLİR DIALOG)
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 17, 32, 0.75);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-dialog {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  max-width: 780px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 28px;
  position: relative;
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

/* ==========================================================================
   ALT BİLGİ (FOOTER)
   ========================================================================== */
.site-footer {
  background: var(--bg-dark);
  color: var(--text-on-dark-muted);
  padding: 48px 0 36px;
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  justify-content: space-between;
  padding-bottom: 28px;
  border-bottom: 1px solid #1E293B;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
  }
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
}

/* ==========================================================================
   ANİMASYON & PREFERS-REDUCED-MOTION DESTEĞİ
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@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;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}