/* ==========================================================================
   3D Premium Industrial Engineering, Quality, Sustainability & Innovation CSS
   ========================================================================== */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* --- Root Design Tokens --- */
:root {
  /* Color Palette - Dark Futuristic Industrial Theme */
  --bg-primary: #070a12;
  --bg-secondary: #0d1222;
  --bg-tertiary: #131b30;
  
  /* Accent Colors */
  --accent-cyan: #06b6d4;
  --accent-indigo: #6366f1;
  --accent-purple: #8b5cf6;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  /* Gradients */
  --grad-primary: linear-gradient(135deg, #06b6d4 0%, #6366f1 50%, #8b5cf6 100%);
  --grad-sustainability: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --grad-innovation: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --grad-card: linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.02) 100%);

  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  /* Glassmorphism & UI Borders */
  --glass-bg: rgba(15, 23, 42, 0.65);
  --glass-bg-hover: rgba(30, 41, 59, 0.75);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-border-glow: rgba(99, 102, 241, 0.3);
  --glass-blur: blur(16px);
  
  /* Shadows & Glows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.25);
  --shadow-emerald: 0 0 25px rgba(16, 185, 129, 0.25);

  /* Fonts */
  --font-heading: 'Outfit', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Global Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
  background-color: var(--bg-primary);
}

/* --- Three.js Canvas Container --- */
#three-canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
}

.gradient-text {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-sustainability {
  background: var(--grad-sustainability);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-innovation {
  background: var(--grad-innovation);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- Reusable Components --- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  text-align: center;
  position: relative;
}

.section-subtitle {
  color: var(--text-muted);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
  font-size: 1.1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
  backdrop-filter: var(--glass-blur);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  padding: 2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-primary);
  opacity: 0;
  transition: var(--transition-fast);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.glass-card:hover::before {
  opacity: 1;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-bounce);
  text-decoration: none;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
}

.btn-icon-only {
  padding: 0.65rem;
  border-radius: 0.6rem;
}

/* --- Header & Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: var(--transition-fast);
}

.navbar.scrolled {
  padding: 0.75rem 0;
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

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

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-main);
}

.nav-brand-icon {
  width: 40px;
  height: 40px;
  border-radius: 0.6rem;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.2rem;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.nav-brand-logo-img {
  width: 44px;
  height: 44px;
  border-radius: 0.65rem;
  object-fit: cover;
  border: 1px solid var(--glass-border-glow);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
  transition: var(--transition-fast);
}

.nav-brand-logo-img:hover {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 0 25px rgba(99, 102, 241, 0.6);
}

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

.nav-brand-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.nav-brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-cyan);
  transition: var(--transition-fast);
  border-radius: 2px;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language Switcher Pill */
.lang-switcher {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: 9999px;
  padding: 0.25rem;
  cursor: pointer;
  backdrop-filter: var(--glass-blur);
}

.lang-btn {
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-btn.active {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
}

/* Hamburger Toggle Button */
.drawer-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.6rem;
  border-radius: 0.6rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.drawer-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--accent-cyan);
}

/* --- Sliding Side Drawer (Kayar Menü) --- */
.side-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 7, 18, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.side-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.side-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  max-width: 85vw;
  height: 100vh;
  background: rgba(13, 18, 34, 0.95);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-left: 1px solid var(--glass-border);
  z-index: 2001;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transform: translateX(100%);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
}

.side-drawer-overlay.active .side-drawer {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
}

.drawer-close {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.drawer-close:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: #ef4444;
  color: #ef4444;
}

.drawer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.drawer-link {
  text-decoration: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.5rem 0;
  transition: var(--transition-fast);
}

.drawer-link i {
  color: var(--accent-cyan);
  transition: var(--transition-fast);
}

.drawer-link:hover {
  color: var(--accent-cyan);
  transform: translateX(8px);
}

.drawer-link:hover i {
  color: var(--accent-indigo);
}

.drawer-footer {
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.drawer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.drawer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --- Hero Section --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 0 4rem 0;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}

.hero-text-col {
  text-align: left;
}

.hero-text-col .badge {
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: 3rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  text-align: left;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 100%;
  margin: 0 0 2rem 0;
  text-align: left;
  line-height: 1.7;
}

.hero-text-col .hero-cta {
  justify-content: flex-start;
  margin-bottom: 0;
}

.hero-visual-col {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-logo-showcase {
  display: inline-block;
  position: relative;
}

.hero-logo-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  aspect-ratio: 1/1;
  border-radius: 1.75rem;
  object-fit: cover;
  border: 1px solid var(--glass-border-glow);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 45px rgba(6, 182, 212, 0.4);
  backdrop-filter: blur(12px);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}

.hero-logo-img:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.7), 0 0 65px rgba(99, 102, 241, 0.6);
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-card {
  padding: 1.5rem 1rem;
  border-radius: 1rem;
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Competencies Grid --- */
.competencies-section {
  padding: 6rem 0;
}

.competencies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.competency-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.competency-icon {
  width: 56px;
  height: 56px;
  border-radius: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  background: var(--grad-primary);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.competency-icon.green {
  background: var(--grad-sustainability);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
}

.competency-icon.purple {
  background: var(--grad-innovation);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.3);
}

.competency-title {
  font-size: 1.35rem;
}

.competency-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.competency-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
}

/* --- Interactive Process & ERP Pipeline --- */
.process-section {
  padding: 6rem 0;
  background: linear-gradient(180deg, transparent 0%, rgba(13, 18, 34, 0.5) 50%, transparent 100%);
}

.pipeline-wrapper {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.pipeline-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.pipeline-step-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  border-radius: 0.75rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
  backdrop-filter: var(--glass-blur);
}

.pipeline-step-btn i {
  color: var(--accent-cyan);
}

.pipeline-step-btn:hover {
  background: rgba(30, 41, 59, 0.8);
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

.pipeline-step-btn.active {
  background: var(--grad-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.pipeline-step-btn.active i {
  color: #fff;
}

.pipeline-display {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.pipeline-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pipeline-badge {
  color: var(--accent-purple);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pipeline-title {
  font-size: 2rem;
}

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

.pipeline-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.pipeline-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-main);
  font-weight: 500;
}

.pipeline-feature-item i {
  color: var(--accent-emerald);
}

.pipeline-visual-box {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 1.25rem;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.5rem;
  position: relative;
  box-shadow: var(--shadow-glow);
}

.pipeline-node-icon {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: #fff;
  box-shadow: 0 0 35px rgba(99, 102, 241, 0.5);
  animation: floatNode 4s ease-in-out infinite;
}

@keyframes floatNode {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* --- Innovation & R&D Lab --- */
.innovation-section {
  padding: 6rem 0;
}

.innovation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.innovation-card {
  border-top: 3px solid var(--accent-purple);
}

.innovation-card:hover {
  border-color: var(--accent-cyan);
}

.innovation-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.innovation-icon {
  width: 48px;
  height: 48px;
  border-radius: 0.75rem;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-purple);
  font-size: 1.35rem;
}

/* --- Sustainability & ESG Simulator --- */
.simulator-section {
  padding: 6rem 0;
}

.simulator-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  background: rgba(13, 18, 34, 0.8);
  border-color: rgba(16, 185, 129, 0.3);
}

.simulator-controls {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
}

.slider-value {
  color: var(--accent-emerald);
  font-family: var(--font-heading);
  font-weight: 700;
}

.range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
  cursor: pointer;
  transition: var(--transition-fast);
}

.range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.simulator-results {
  background: rgba(7, 10, 18, 0.7);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 1rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  gap: 1.5rem;
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.result-value {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent-emerald);
}

.result-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- Contact & Footer --- */
.contact-section {
  padding: 6rem 0 8rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-card-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
  color: var(--text-main);
}

.contact-icon {
  width: 50px;
  height: 50px;
  border-radius: 0.75rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-indigo);
  font-size: 1.25rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.15rem;
  border-radius: 0.75rem;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.footer {
  border-top: 1px solid var(--glass-border);
  padding: 2.5rem 0;
  background: rgba(7, 10, 18, 0.9);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 0.85rem;
  flex-wrap: wrap;
}

.footer-legal-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-fast);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.footer-legal-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* --- Legal Modals (Privacy & Terms) --- */
.legal-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.legal-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.legal-modal {
  width: 100%;
  max-width: 850px;
  max-height: 85vh;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border-glow);
  border-radius: 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--shadow-glow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.legal-modal-overlay.active .legal-modal {
  transform: scale(1) translateY(0);
}

.legal-modal-header {
  padding: 1.5rem 2rem;
  background: rgba(15, 23, 42, 0.8);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.legal-modal-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
}

.legal-modal-title i {
  color: var(--accent-cyan);
}

.legal-modal-close {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.legal-modal-close:hover {
  background: rgba(239, 68, 68, 0.2);
  color: #ef4444;
  border-color: rgba(239, 68, 68, 0.4);
  transform: rotate(90deg);
}

.legal-modal-body {
  padding: 2rem;
  overflow-y: auto;
  color: var(--text-main);
  font-size: 0.95rem;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.legal-modal-body::-webkit-scrollbar {
  width: 6px;
}
.legal-modal-body::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.4);
}
.legal-modal-body::-webkit-scrollbar-thumb {
  background: var(--accent-indigo);
  border-radius: 3px;
}

.legal-section-block {
  background: rgba(15, 23, 42, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
}

.legal-section-block h4 {
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legal-section-block p, .legal-section-block ul {
  color: var(--text-muted);
}

.legal-section-block ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}

.legal-section-block li {
  margin-bottom: 0.35rem;
}

/* --- Responsive Layouts --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }
  .hero-text-col {
    text-align: center;
  }
  .hero-text-col .hero-title {
    text-align: center;
    font-size: 2.5rem;
  }
  .hero-text-col .hero-description {
    text-align: center;
    margin: 0 auto 2rem auto;
  }
  .hero-text-col .hero-cta {
    justify-content: center;
  }
  .hero-logo-img {
    max-width: 280px;
  }
  .pipeline-display { grid-template-columns: 1fr; }
  .simulator-card { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; } /* Hide standard desktop links, drawer handles mobile */
}

@media (max-width: 640px) {
  .hero-title { font-size: 2.25rem; }
  .hero-description { font-size: 1.05rem; }
  .hero-stats { grid-template-columns: 1fr; }
  .section-title { font-size: 2rem; }
  .btn { width: 100%; }
  .hero-cta { flex-direction: column; }
  .legal-modal-header { padding: 1.25rem 1.25rem; }
  .legal-modal-body { padding: 1.25rem; }
}

/* --- Graphical Progress Bar Skills (Grafik Barlı Yetkinlikler) --- */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.skill-category-title {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 0.75rem;
}

.skill-item {
  margin-bottom: 1.25rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
  font-weight: 600;
}

.skill-name {
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-percent {
  color: var(--accent-cyan);
  font-family: var(--font-heading);
  font-weight: 700;
}

.skill-progress-bg {
  width: 100%;
  height: 10px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.skill-progress-fill {
  height: 100%;
  border-radius: 9999px;
  background: var(--grad-primary);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.5);
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.skill-progress-fill.green {
  background: var(--grad-sustainability);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.5);
}

.skill-progress-fill.purple {
  background: var(--grad-innovation);
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.5);
}

/* --- Work Experience Timeline (İş Deneyimleri Zaman Çizelgesi) --- */
.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  margin-top: 2rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--accent-indigo) 50%, var(--accent-purple) 100%);
  border-radius: 2px;
}

.experience-card {
  position: relative;
  padding-left: 4.5rem;
}

.experience-dot {
  position: absolute;
  top: 1.75rem;
  left: 14px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 15px var(--accent-cyan);
  z-index: 2;
  transition: var(--transition-fast);
}

.experience-card.active-job .experience-dot {
  border-color: var(--accent-emerald);
  background: var(--accent-emerald);
  box-shadow: 0 0 20px var(--accent-emerald);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.exp-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.exp-company {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
}

.exp-role {
  font-size: 1.05rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-top: 0.2rem;
}

.exp-date {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
}

.exp-date.current {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--accent-emerald);
}

.duty-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-top: 1rem;
}

.duty-item {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.duty-item i {
  color: var(--accent-cyan);
  margin-top: 0.25rem;
  flex-shrink: 0;
}

/* --- Education & Sports Cards --- */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.edu-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.edu-icon {
  width: 48px;
  height: 48px;
  border-radius: 0.75rem;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-indigo);
  font-size: 1.35rem;
}

@media (max-width: 768px) {
  .experience-timeline::before { left: 16px; }
  .experience-card { padding-left: 3rem; }
  .experience-dot { left: 6px; }
}