/* ==========================================================================
   KİŞİSEL WEB SİTESİ - MODERN STİL DOSYASI (style.css)
   Modern Tasarım, Koyu/Açık Tema, Glassmorphism, Responsive Düzen
   ========================================================================== */

/* 1. CSS Değişkenleri & Temalar */
:root {
  /* Font Aileleri */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', var(--font-main);
  --font-mono: 'JetBrains Mono', monospace;

  /* CAD & Hassas Mühendislik Vurgu Renkleri (Electric Cyan & Cobalt Blue) */
  --color-primary: #0ea5e9;
  --color-primary-hover: #0284c7;
  --color-primary-rgb: 14, 165, 233;
  --color-secondary: #2563eb;
  --color-secondary-rgb: 37, 99, 235;
  --color-cyan: #38bdf8;
  --color-emerald: #10b981;
  --gradient-accent: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 45%, #2563eb 100%);
  --gradient-card: linear-gradient(180deg, rgba(56, 189, 248, 0.05) 0%, rgba(15, 23, 42, 0.02) 100%);

  /* Boyutlar & Yumuşak Modern Köşeler */
  --header-height: 72px;
  --container-max-width: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* Koyu Tema - CAD Blueprint Slate (Varsayılan) */
[data-theme="dark"] {
  --bg-body: #080d1a;
  --bg-surface: #0f172a;
  --bg-surface-alt: #131f37;
  --bg-card: rgba(15, 23, 42, 0.78);
  --bg-card-hover: rgba(19, 31, 55, 0.92);
  --bg-glass: rgba(8, 13, 26, 0.82);
  --border-color: rgba(56, 189, 248, 0.12);
  --border-highlight: rgba(56, 189, 248, 0.38);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.55), 0 0 15px rgba(14, 165, 233, 0.05);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.75), 0 0 25px rgba(14, 165, 233, 0.08);
  --shadow-glow: 0 0 25px rgba(14, 165, 233, 0.3);
}

/* Açık Tema - Precision Drafting Paper */
[data-theme="light"] {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f0f6fc;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: rgba(14, 165, 233, 0.15);
  --border-highlight: rgba(2, 132, 199, 0.35);

  --text-primary: #0b1329;
  --text-secondary: #334155;
  --text-muted: #64748b;

  --shadow-sm: 0 2px 6px rgba(14, 165, 233, 0.05);
  --shadow-md: 0 10px 25px -8px rgba(14, 165, 233, 0.08);
  --shadow-lg: 0 20px 35px -10px rgba(14, 165, 233, 0.12);
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.18);
}

/* 2. Temel Sıfırlama & Tipografi */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  overflow-x: hidden;
  max-width: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  /* CAD Blueprint Izgarası (Teknik ve Zarif) */
  background-image: radial-gradient(rgba(56, 189, 248, 0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--text-primary);
  line-height: 1.65;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  max-width: 100%;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

[data-theme="light"] body {
  background-image: radial-gradient(rgba(14, 165, 233, 0.08) 1px, transparent 1px);
}

/* 2.1. İnce Üst İlerleme / Geçiş Çubuğu */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-accent);
  z-index: 10000;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(14, 165, 233, 0.5);
}

/* 2.2. Sayfalar Arası İpeksi & Pürüzsüz Geçiş (Page Transitions) */
@view-transition {
  navigation: auto;
}

main {
  animation: pageFadeSlideIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
  will-change: opacity, transform, filter;
}

@keyframes pageFadeSlideIn {
  0% {
    opacity: 0;
    transform: translateY(14px);
    filter: blur(4px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

body.page-is-leaving main {
  opacity: 0;
  transform: translateY(-8px);
  filter: blur(2px);
  transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.28s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  main {
    animation: none !important;
    transform: none !important;
    filter: none !important;
  }
  body.page-is-leaving main {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
}

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

ul {
  list-style: none;
}

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

button, input, textarea {
  font-family: inherit;
  color: inherit;
  border: none;
  outline: none;
}

/* 3. Kapsayıcı & Yardımcı Sınıflar */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
  position: relative;
}

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

.section-header {
  margin-bottom: 56px;
}

.text-center {
  text-align: center;
}

.section-badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  border: 1px solid rgba(var(--color-primary-rgb), 0.25);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-accent {
  color: var(--color-primary);
}

/* Glassmorphism Kart */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(var(--color-primary-rgb), 0.08);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-block {
  width: 100%;
}

.icon-btn {
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-highlight);
  transform: scale(1.05);
}

/* Etiket Rozetleri (Tags) */
.tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 500;
  font-family: var(--font-mono);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  border: 1px solid rgba(var(--color-primary-rgb), 0.25);
}

/* İlerleme Çubuğu (Scroll Progress) */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-accent);
  z-index: 1001;
  transition: width 0.1s ease-out;
}

/* 4. Header & Navigasyon */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: background-color var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
}

.logo-symbol {
  color: var(--color-primary);
  font-family: var(--font-mono);
  background: rgba(var(--color-primary-rgb), 0.12);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
}

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

/* Dil Değiştirici Buton (TR / EN) */
.btn-lang {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: var(--font-mono);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-lang:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-lang .lang-active {
  color: var(--color-primary);
}

.btn-lang .lang-inactive {
  color: var(--text-muted);
  font-weight: 500;
}

/* Yakında Eklenecek Projeler Vitrini */
.coming-soon-banner {
  grid-column: 1 / -1;
  text-align: center;
  padding: 42px 24px;
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border-highlight);
  background: rgba(var(--color-primary-rgb), 0.04);
  margin-bottom: 30px;
}

.coming-soon-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: inline-block;
}

.coming-soon-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.coming-soon-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.mobile-toggle {
  display: none;
}

/* Tema İkonları Görünürlüğü */
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

.menu-close-icon { display: none; }

/* 5. Hero Bölümü */
.hero-section {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
  display: flex;
  align-items: center;
  padding: 60px 0 80px;
  overflow: hidden;
  overflow-x: clip;
  contain: paint;
  max-width: 100vw;
  width: 100%;
}

.hero-background-glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 100vw);
  max-width: 100vw;
  height: 450px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.22) 0%, rgba(37, 99, 235, 0.12) 42%, transparent 70%);
  filter: blur(70px);
  pointer-events: none;
  z-index: 0;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
  position: relative;
  z-index: 1;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--color-emerald);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-emerald);
  box-shadow: 0 0 8px var(--color-emerald);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.hero-typewriter-wrapper {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  flex-wrap: wrap;
  word-break: break-word;
}

.typewriter-text {
  color: var(--color-primary);
  font-weight: 700;
}

.typewriter-cursor {
  animation: blink 0.9s infinite;
  color: var(--color-primary);
  font-weight: 300;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}

.social-links-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.social-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-icon:hover {
  color: var(--color-primary);
  border-color: var(--border-highlight);
  transform: translateY(-3px);
}

/* Hero Kartı */
.profile-card {
  padding: 24px;
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.profile-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot.red { background-color: #ef4444; }
.dot.yellow { background-color: #f59e0b; }
.dot.green { background-color: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* 3D Yaşayan Karakter Sahnesi */
.profile-avatar-stage {
  position: relative;
  width: 100%;
  max-width: 320px;
  height: 180px;
  margin: 0 auto 16px auto;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

/* 3D Karakter Kapsayıcısı */
.character-wrapper {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  width: 175px;
  height: 175px;
}

.character-wrapper picture {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.character-img {
  width: 175px;
  height: 175px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.4));
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
}

.profile-card:hover .character-img {
  transform: scale(1.03) translateY(-2px);
}

/* Yüzen Vurgu Rozetleri (Karaktere Yakın ve Kart İçine Sığacak Şekilde) */
.floating-badge {
  position: absolute;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 600;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  z-index: 3;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  white-space: nowrap;
}

.badge-code {
  top: 14px;
  right: calc(50% + 48px);
  animation: floatBadgeCode 3.8s ease-in-out infinite;
}

.badge-tech {
  bottom: 8px;
  left: calc(50% + 48px);
  animation: floatBadgeTech 3.8s ease-in-out infinite 1.9s;
}

@keyframes floatBadgeCode {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-5px) rotate(1deg); }
}

@keyframes floatBadgeTech {
  0%, 100% { transform: translateY(0) rotate(1deg); }
  50% { transform: translateY(-5px) rotate(-1deg); }
}


@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.profile-code-snippet {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  overflow-x: auto;
  max-width: 100%;
}

.profile-code-snippet pre {
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
}

.code-kw { color: #f43f5e; }
.code-str { color: #10b981; }
.code-bool { color: #06b6d4; }

.profile-stats-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  text-align: center;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-primary);
}

.stat-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.stat-divider {
  width: 1px;
  height: 28px;
  background-color: var(--border-color);
}

/* 6. Hakkımda Bölümü */
.about-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.about-heading {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
}

.about-paragraph {
  font-size: 1.02rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.about-info-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 28px;
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
}

.info-label {
  font-weight: 600;
  color: var(--text-primary);
  min-width: 130px;
}

.info-value {
  color: var(--text-secondary);
}

.about-cards-col {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.feature-card {
  padding: 20px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.accent-indigo { background: rgba(var(--color-primary-rgb), 0.15); color: var(--color-primary); }
.accent-cyan { background: rgba(56, 189, 248, 0.15); color: var(--color-cyan); }
.accent-violet { background: rgba(var(--color-secondary-rgb), 0.15); color: var(--color-secondary); }

.feature-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* 7. Yetenekler & Filtreleme */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-tab {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-primary);
  border-color: var(--border-highlight);
}

.filter-tab.active {
  background: var(--gradient-accent);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(var(--color-primary-rgb), 0.35);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.skill-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.skill-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.skill-icon {
  font-size: 1.6rem;
}

.skill-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary);
}

.skill-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.skill-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  flex-grow: 1;
}

.skill-meter {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

[data-theme="light"] .skill-meter {
  background: rgba(0, 0, 0, 0.08);
}

.skill-meter-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width 1s ease-in-out;
}

/* 8. Deneyim Zaman Çizelgesi */
.timeline-container {
  max-width: 840px;
  margin: 0 auto;
  position: relative;
  padding-left: 36px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary) 0%, rgba(var(--color-primary-rgb), 0.1) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -30px;
  top: 24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid var(--bg-body);
  box-shadow: 0 0 10px var(--color-primary);
}

.timeline-content {
  padding: 26px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.timeline-role {
  font-family: var(--font-heading);
  font-size: 1.18rem;
  font-weight: 700;
}

.timeline-company {
  font-size: 0.92rem;
  color: var(--color-primary);
  font-weight: 500;
  display: block;
  margin-top: 2px;
}

.timeline-date {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

.timeline-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 9. Projeler Bölümü */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 30px;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.project-media {
  position: relative;
  height: 210px;
  overflow: hidden;
}

.project-mockup {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-mockup {
  transform: scale(1.04);
}

.mockup-gradient-1 { background: linear-gradient(135deg, #0369a1 0%, #0c4a6e 60%, #082f49 100%); }
.mockup-gradient-2 { background: linear-gradient(135deg, #0e7490 0%, #155e75 60%, #164e63 100%); }
.mockup-gradient-3 { background: linear-gradient(135deg, #1d4ed8 0%, #1e40af 60%, #172554 100%); }
.mockup-gradient-4 { background: linear-gradient(135deg, #0284c7 0%, #0369a1 60%, #075985 100%); }

.mockup-screen {
  width: 90%;
  height: 90%;
  background: rgba(15, 23, 42, 0.9);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.mockup-header {
  height: 22px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mockup-circle {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
}

.mockup-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.mockup-dash-nav {
  height: 12px;
  width: 60%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.mockup-dash-cards {
  display: flex;
  gap: 8px;
}

.mockup-dash-card {
  height: 48px;
  flex: 1;
  background: rgba(var(--color-primary-rgb), 0.2);
  border-radius: 6px;
}

.mockup-hero-banner {
  height: 24px;
  background: rgba(16, 185, 129, 0.25);
  border-radius: 4px;
}

.mockup-product-grid {
  display: flex;
  gap: 6px;
}

.mockup-prod {
  flex: 1;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.mockup-terminal-view {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #94a3b8;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mock-line.green { color: #10b981; }
.mock-line.cyan { color: #06b6d4; }

.mockup-weather-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1rem;
}

.project-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-highlight);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

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

.project-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.35;
}

.project-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.55;
  flex-grow: 1;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.project-link-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.project-link-icon:hover {
  color: var(--color-primary);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

/* 10. İletişim Bölümü */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

.contact-info-heading {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.contact-info-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

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

.contact-card {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-card-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.contact-card-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.contact-card-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
}

.contact-social-pills {
  display: flex;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.social-pill {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.social-pill:hover {
  color: var(--color-primary);
  border-color: var(--border-highlight);
}

/* Kopyalama Butonu */
.btn-copy {
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition-fast);
}

.btn-copy:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
}

.copy-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.btn-copy:hover .copy-tooltip {
  opacity: 1;
}

/* İletişim Formu */
.contact-form-card {
  padding: 36px;
}

.form-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.form-label {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.required {
  color: #ef4444;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.22);
}

.form-textarea {
  resize: vertical;
}

.form-error {
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 4px;
  min-height: 16px;
}

/* 11. Footer */
.footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  padding: 60px 0 30px;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 360px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.copyright, .credits {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 12. Yukarı Çık Butonu (Back to top) */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  color: #ffffff;
  background: var(--gradient-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* 13. Toast Bildirim */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-highlight);
  box-shadow: var(--shadow-lg);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  z-index: 2000;
  transition: all var(--transition-normal);
}

.toast.hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(20px);
}

#toast-icon {
  color: var(--color-emerald);
  font-weight: bold;
}

/* 14. Proje Detay Modalı */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.modal-content {
  width: 100%;
  max-width: 620px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  background: var(--bg-surface);
  box-shadow: var(--shadow-lg);
  transform: scale(1);
  transition: transform var(--transition-normal);
}

.modal-backdrop.hidden .modal-content {
  transform: scale(0.95);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-alt);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  background: rgba(239, 68, 68, 0.15);
}

.modal-category {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 6px;
  display: block;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 18px;
}

.modal-mockup {
  height: 180px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.modal-subheading {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.modal-features-list {
  margin-bottom: 20px;
  padding-left: 18px;
  list-style: disc;
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
}

.modal-footer-actions {
  display: flex;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--border-color);
}

/* 15. Responsive Medya Sorguları */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-typewriter-wrapper {
    justify-content: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .social-links-row {
    justify-content: center;
  }

  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 60px 0;
  }

  .hero-section {
    padding: 35px 0 50px;
    overflow: hidden;
    overflow-x: clip;
    contain: paint;
    max-width: 100vw;
    width: 100%;
  }

  .hero-container {
    grid-template-columns: 100%;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    text-align: center;
    gap: 32px;
  }

  .hero-content, .hero-visual {
    max-width: 100%;
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .badge-pill {
    font-size: 0.75rem;
    padding: 6px 12px;
    max-width: 100%;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
    word-break: break-word;
    margin-bottom: 18px;
  }

  .hero-title {
    font-size: clamp(1.85rem, 7vw, 2.3rem);
    line-height: 1.2;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    margin-bottom: 12px;
  }

  .gradient-text {
    max-width: 100%;
    word-break: break-word;
  }

  .hero-typewriter-wrapper {
    font-size: clamp(0.9rem, 3.8vw, 1.05rem);
    min-height: 28px;
    flex-wrap: nowrap;
    white-space: nowrap;
    justify-content: center;
    text-align: center;
    max-width: 100%;
    margin-bottom: 16px;
  }

  .typewriter-text {
    white-space: nowrap;
  }

  .hero-description {
    font-size: 0.95rem;
    line-height: 1.55;
    max-width: 100%;
    padding: 0 4px;
    word-break: break-word;
    margin-bottom: 24px;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 28px;
    gap: 10px;
  }

  .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 18px;
    font-size: 0.92rem;
    box-sizing: border-box;
  }

  .social-links-row {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    max-width: 100%;
  }

  /* Profil Kartı Mobil */
  .profile-card {
    padding: 16px;
    margin: 0 auto;
    max-width: 360px;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    border-radius: var(--radius-md);
  }

  /* Profil Kartı Sahnesi Mobil */
  .profile-avatar-stage {
    position: relative;
    width: 100%;
    height: 165px;
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
  }

  .character-wrapper {
    width: 152px;
    height: 152px;
  }

  .character-img {
    width: 152px;
    height: 152px;
  }

  .floating-badge {
    position: absolute !important;
    font-size: 0.72rem !important;
    padding: 4px 10px !important;
  }

  .badge-code {
    top: 6px !important;
    right: auto !important;
    left: 4px !important;
  }

  .badge-tech {
    bottom: 4px !important;
    left: auto !important;
    right: 4px !important;
  }

  .profile-code-snippet {
    padding: 10px 12px;
    font-size: 0.75rem;
    overflow-x: hidden;
    max-width: 100%;
    box-sizing: border-box;
  }

  .profile-code-snippet pre,
  .profile-code-snippet code {
    white-space: pre-wrap !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
    max-width: 100%;
  }

  .profile-stats-row {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 4px !important;
    padding-top: 10px !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .stat-divider {
    display: none !important;
  }

  .stat-item {
    min-width: 0 !important;
    overflow: hidden !important;
  }

  .stat-number {
    font-size: 1.1rem !important;
  }

  .stat-desc {
    font-size: 0.62rem !important;
    line-height: 1.25 !important;
    word-break: break-word !important;
    overflow-wrap: break-word !important;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .hide-mobile {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  /* Mobil Menü Çekmecesi */
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform var(--transition-normal);
    visibility: hidden;
  }

  .nav-menu.open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-menu.open .menu-open-icon { display: none; }
  .nav-menu.open .menu-close-icon { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    width: 100%;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    display: block;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .contact-form-card {
    padding: 20px;
  }

  .timeline-container {
    padding-left: 20px;
  }

  .timeline-container::before {
    left: 6px;
  }

  .timeline-dot {
    left: -20px;
  }

  .explore-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .explore-card {
    padding: 20px;
  }

  .page-section {
    padding-top: calc(var(--header-height) + 24px);
    padding-bottom: 60px;
  }
}

/* 16. Çoklu Sayfa (Multi-Page) Özel Stilleri */
.page-section {
  padding-top: calc(var(--header-height) + 48px);
  padding-bottom: 90px;
  position: relative;
  min-height: calc(100vh - 200px);
}

.explore-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.explore-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.explore-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md), 0 0 20px rgba(var(--color-primary-rgb), 0.15);
}

.explore-card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.explore-card-title {
  font-family: var(--font-heading);
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.explore-card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 22px;
  flex-grow: 1;
}

.explore-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast);
}

.explore-card:hover .explore-card-btn {
  gap: 12px;
}


/* Real engineering projects and compact navigation */
.featured-projects { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; align-items: start; }
.real-project { min-width: 0; scroll-margin-top: calc(var(--header-height) + 24px); }
.project-photo { width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: #35365f; }
.project-photo img { display: block; width: 100%; height: 100%; object-fit: contain; }
.engine-photo { background: #262a30; }
.engine-photo img { object-fit: cover; object-position: 50% 48%; }
.real-project .project-content { padding: 26px; gap: 12px; }
.real-project .project-meta { color: var(--color-primary); font-size: .875rem; flex-wrap: wrap; }
.real-project .project-title { font-size: 1.35rem; line-height: 1.4; }
.real-project .project-summary, .text-project .project-summary { font-size: 1rem; margin-bottom: 8px; }
.project-details { border-top: 1px solid var(--border-color); padding-top: 16px; }
.project-details summary { cursor: pointer; color: var(--text-primary); font-weight: 600; padding: 6px 0; }
.project-detail-body { padding-top: 16px; color: var(--text-secondary); }
.project-detail-body p { margin-bottom: 16px; }
.project-result { color: var(--text-primary); }
.project-detail-body img { width: 100%; height: auto; display: block; border-radius: 8px; }
.project-detail-body figcaption { font-size: .875rem; margin: 12px 0; }
.project-image-link { display: inline-block; color: var(--color-primary); text-decoration: underline; text-underline-offset: 4px; margin: 8px 0; }
.other-projects { margin-top: 64px; }
.other-projects .section-title { font-size: 1.65rem; margin-bottom: 24px; }
.other-projects-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
.text-project { padding: 24px; border-radius: var(--radius-lg); }
.text-project .project-meta { font-size: .875rem; margin-bottom: 12px; }
.featured-footer { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-top: 32px; }

/* Engineering Vision & Core Pillars Grid */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.vision-card {
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-lg);
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.vision-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md), 0 0 24px rgba(var(--color-primary-rgb), 0.16);
}

.vision-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.vision-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb), 0.12);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.45rem;
  flex-shrink: 0;
}

.vision-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.22);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.vision-card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.35;
  color: var(--text-primary);
}

.vision-card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.vision-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: gap var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.vision-card:hover .vision-card-link {
  gap: 12px;
  color: #38bdf8;
}

.vision-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

@media (max-width: 960px) {
  .vision-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

.form-note { font-size: .95rem; color: var(--text-secondary); margin-bottom: 24px; }
.nav-container { gap: 16px; }
.nav-actions { flex-shrink: 0; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 4px; }
#mobile-toggle[aria-expanded="true"] .menu-open-icon { display: none; }
#mobile-toggle[aria-expanded="true"] .menu-close-icon { display: block; }
@media (min-width: 769px) and (max-width: 1100px) {
 .nav-list { gap: 15px; }
 .nav-actions .hide-mobile { display: none; }
 .header .logo { font-size: 1.05rem; }
}
@media (max-width: 768px) {
 .header .nav-container { gap: 8px; padding-inline: 12px; }
 .header .logo { font-size: 1rem; gap: 5px; min-width: 0; }
 .header .logo-symbol { padding: 4px 5px; }
 .nav-actions { gap: 6px; }
 .btn-lang { padding: 6px 8px; gap: 3px; min-height: 40px; }
 .header .icon-btn { width: 40px; height: 40px; padding: 8px; }
 .nav-menu { position: absolute; top: 100%; max-height: calc(100dvh - var(--header-height)); overflow-y: auto; }
 .featured-projects, .other-projects-grid { grid-template-columns: minmax(0,1fr); }
 .real-project .project-content { padding: 22px; }
 .page-section { padding-top: calc(var(--header-height) + 24px); }
 .hero-typewriter-wrapper { flex-wrap: wrap; white-space: normal; min-height: 3.2em; gap: 0 6px; }
 .typewriter-text { white-space: normal; overflow-wrap: anywhere; }
 .hero-description { font-size: 1rem; }
 .stat-desc { font-size: .75rem !important; }
}
@media (max-width: 359px) { .header .logo-symbol { display: none; } }

@media (min-width: 769px) and (max-width: 1024px) {
 .header .logo-symbol { display: none; }
 .nav-list { gap: 12px; }
 .nav-link { font-size: .875rem; }
 .nav-actions { gap: 6px; }
}