/* 
  TEKNOSIS HAVACILIK VE SAVUNMA A.Ş.
  Premium Modern Design System (Vanilla CSS)
*/

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Rajdhani:wght@500;600;700&display=swap');

:root {
  /* Colors */
  --bg-dark: #050b14;
  --bg-slate: #0c1420;
  --panel-dark: rgba(15, 23, 42, 0.95);
  --panel-glass: rgba(15, 23, 42, 0.75);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: #0066cc;
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  
  --accent-cyan: #00b4d8; /* Brand cyan */
  --accent-blue: #0056b3; /* Brand blue */
  --accent-glow: rgba(0, 86, 179, 0.15);
  --accent-gradient: linear-gradient(135deg, #0056b3 0%, #00b4d8 100%);
  --success-glow: rgba(0, 86, 179, 0.05);
  --success: #0056b3;
  
  /* Dimensions & Effects */
  --max-width: 1200px;
  --radius-lg: 0px; /* Sharp corners */
  --radius-md: 0px; /* Sharp corners */
  --radius-sm: 0px; /* Sharp corners */
  --transition-smooth: all 0.15s cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-fast: all 0.08s ease;
  
  --shadow-neon: 0 0 15px rgba(0, 86, 179, 0.1);
  --shadow-panel: 0 20px 40px rgba(0, 0, 0, 0.6);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-dark);
}

body {
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
  background: 
    radial-gradient(1000px circle at 90% -10%, rgba(59, 130, 246, 0.12), transparent 70%),
    radial-gradient(800px circle at -10% 40%, rgba(6, 182, 212, 0.08), transparent 60%),
    var(--bg-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Noise Grid Layer */
.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.03;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.1;
}

p {
  color: var(--text-secondary);
}

/* Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* Custom Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition-smooth);
  cursor: pointer;
  text-decoration: none;
  font-family: 'Outfit', sans-serif;
  gap: 0.5rem;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.btn-primary:hover {
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px rgba(0, 86, 179, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.2) inset;
}

.btn-secondary {
  background: var(--panel-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(0, 86, 179, 0.1);
  border-color: var(--accent-blue);
  transform: translateY(-1.5px);
}

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

.btn-outline:hover {
  border-color: var(--accent-cyan);
  background: rgba(6, 182, 212, 0.05);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.1);
  transform: translateY(-2px);
}

/* Header & Sticky Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(3, 7, 18, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}

.logo-img {
  height: 58px;
  width: auto;
  transition: var(--transition-smooth);
}

.logo-link:hover .logo-img {
  transform: scale(1.03);
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.8rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 60px 0 80px;
  display: flex;
  align-items: center;
  min-height: 70vh;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
  filter: brightness(0.25) contrast(1.1);
  transform: scale(1.05);
  transition: var(--transition-smooth);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to bottom, rgba(3, 7, 18, 0.7) 0%, var(--bg-dark) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2.5rem;
  align-items: center;
}


.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.eyebrow {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-content h1 {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1.1;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-content p {
  font-size: 1.2rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.hero-sidebar-projects {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

.hero-project-item {
  position: relative;
  display: flex;
  align-items: center;
  padding: 1.2rem 1.6rem;
  background: var(--panel-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-decoration: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  min-height: 85px;
}

.hero-project-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 1;
  filter: brightness(0.4) contrast(1.1);
}

.hero-project-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  width: 100%;
}

.hero-project-content h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  transition: color 0.3s ease;
}

.hero-project-item .view-project {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  font-weight: 600;
}

/* Hover effects */
.hero-project-item:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-neon);
}

.hero-project-item:hover .hero-project-img {
  opacity: 1;
  transform: scale(1.05);
}

.hero-project-item:hover .hero-project-content h3 {
  color: #ffffff;
}

.hero-project-item:hover .view-project {
  opacity: 1;
  transform: translateX(0);
}

.hero-bottom-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  width: 100%;
  margin-top: 3rem;
  position: relative;
  z-index: 2;
}

.kpi-card {
  background: var(--panel-glass);
  border: 1px solid var(--border-glass);
  padding: 1.2rem 1.6rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-smooth);
}

.kpi-card:hover {
  transform: translateY(-3px);
  background: rgba(13, 27, 49, 0.4);
  border-color: rgba(6, 182, 212, 0.3);
  box-shadow: var(--shadow-neon);
}

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

.kpi-number {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  margin-bottom: 0.4rem;
}

.kpi-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

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

.section-alt {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-slate) 50%, var(--bg-dark) 100%);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.section-header h2 {
  font-size: 2.8rem;
  font-weight: 700;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: var(--panel-dark);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-blue);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3), var(--shadow-neon);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.5rem;
  border: 1px solid rgba(6, 182, 212, 0.2);
}

.card h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
}

.card p {
  font-size: 1rem;
  line-height: 1.6;
  flex-grow: 1;
}

.card-link {
  color: var(--accent-cyan);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.card-link:hover {
  color: var(--text-primary);
  gap: 0.6rem;
}

/* Projects Media Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 9/16;
  border: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
  filter: brightness(0.6) contrast(1.05);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(3, 7, 18, 0.95) 0%, rgba(3, 7, 18, 0.4) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 2rem;
  gap: 0.8rem;
  transition: var(--transition-smooth);
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-neon), var(--shadow-panel);
}

.project-card:hover .project-img {
  transform: scale(1.05);
  filter: brightness(0.8) contrast(1.1);
}

.project-overlay h3 {
  font-size: 1.8rem;
  color: #fff;
}

.project-overlay p {
  font-size: 0.95rem;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition-smooth);
  color: var(--text-secondary);
}

.project-card:hover .project-overlay p {
  opacity: 1;
  transform: translateY(0);
}

/* Split Process Section */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.split-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-panel);
}

.split-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.split-media:hover .split-img {
  transform: scale(1.02);
}

.process-list {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}

.process-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
}

.process-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
  opacity: 0.7;
}

.process-text h3 {
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

/* Page Hero (Internal Pages) */
.page-hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-glass);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-size: cover;
  background-position: center;
  filter: brightness(0.2) contrast(1.1);
}

.page-hero-content {
  max-width: 800px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.2rem;
}

.page-hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
}

/* Table styles */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--panel-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1rem;
  backdrop-filter: blur(12px);
  margin-top: 2rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 600px;
}

th, td {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid rgba(6, 182, 212, 0.3);
}

td {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.03);
}

/* SSS / Accordion Section */
.faq-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: flex-start;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--panel-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: var(--transition-smooth);
}

.faq-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.8rem;
  display: flex;
  gap: 0.8rem;
}

.faq-item h3::before {
  content: 'Q:';
  color: var(--accent-cyan);
  font-weight: 700;
}

.faq-item p {
  font-size: 0.95rem;
  padding-left: 1.8rem;
}

/* Timeline */
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.timeline-card {
  background: var(--panel-dark);
  border: 1px solid var(--border-glass);
  padding: 2rem;
  border-radius: var(--radius-md);
  position: relative;
  transition: var(--transition-smooth);
}

.timeline-card::after {
  content: '';
  position: absolute;
  top: -10px;
  left: 2rem;
  width: 20px;
  height: 20px;
  background: var(--bg-dark);
  border-left: 1px solid var(--border-glass);
  border-top: 1px solid var(--border-glass);
  transform: rotate(45deg);
}

.timeline-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
}

/* Contact Page Details */
.contact-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: flex-start;
}

.offer-form {
  background: var(--panel-dark);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
  box-shadow: var(--shadow-panel);
}

.form-group-full {
  grid-column: span 2;
}

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

.offer-form span {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.offer-form input,
.offer-form select,
.offer-form textarea {
  background: rgba(3, 7, 18, 0.5);
  border: 1px solid var(--border-glass);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.offer-form input:focus,
.offer-form select:focus,
.offer-form textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.25);
  background: rgba(3, 7, 18, 0.8);
}

.contact-pref-group {
  grid-column: span 2;
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(3, 7, 18, 0.2);
}

.contact-pref-group legend {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  padding: 0 0.5rem;
  color: var(--accent-cyan);
}

.radio-row {
  display: flex;
  gap: 2rem;
  margin-top: 0.8rem;
}

.radio-label {
  display: flex;
  flex-direction: row !important;
  align-items: center !important;
  gap: 0.6rem !important;
  cursor: pointer;
}

.radio-label input[type="radio"] {
  accent-color: var(--accent-cyan);
  width: 18px;
  height: 18px;
}

.check-label {
  display: flex;
  flex-direction: row !important;
  align-items: center !important;
  gap: 0.6rem !important;
  cursor: pointer;
}

.check-label input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  width: 18px;
  height: 18px;
}

.form-status {
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  margin-top: 1.5rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
}

.form-status.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid #ef4444;
  color: #ef4444;
}

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

.map-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  height: 350px;
  box-shadow: var(--shadow-panel);
}

.map-card iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: invert(90%) hue-rotate(180deg) brightness(0.85);
}

/* Footer */
.footer {
  background: #02050b;
  border-top: 1px solid var(--border-glass);
  padding: 60px 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-logo {
  height: 40px;
  width: auto;
  opacity: 0.85;
}

.footer p {
  font-size: 0.95rem;
  max-width: 600px;
  color: var(--text-muted);
}

.footer-copyright {
  font-size: 0.85rem !important;
  color: var(--text-muted) !important;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1.5rem;
  width: 100%;
  margin-top: 1.5rem;
}

/* Scroll Animation Class */
.reveal {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-sidebar-projects {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .hero-sidebar-projects .hero-project-item {
    aspect-ratio: 16/10;
  }
  .hero-bottom-kpis {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
  }
  .cards-grid,
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .page-hero {
    padding: 100px 0 50px;
  }
  .header-inner {
    height: 70px;
  }
  .menu-toggle {
    display: block;
  }
  .nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 1rem;
    right: 1rem;
    background: #0b1321;
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 2rem;
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow-panel);
    z-index: 101;
  }
  .nav.open {
    display: flex;
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
  }
  .nav-link {
    font-size: 1.1rem;
    width: 100%;
  }
  .hero-content h1 {
    font-size: 2.8rem;
  }
  .hero-sidebar-projects {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }
  .hero-sidebar-projects .hero-project-item {
    aspect-ratio: auto;
  }
  .hero-bottom-kpis {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .cards-grid,
  .projects-grid,
  .timeline-grid {
    grid-template-columns: 1fr;
  }
  .split-section {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .offer-form {
    padding: 2rem 1.5rem;
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  .form-group-full {
    grid-column: span 1;
  }
  .radio-row {
    flex-direction: column;
    gap: 0.8rem;
  }
  .section-header h2 {
    font-size: 2.2rem;
  }
}

/* --- Hero Canvas (Step 1) --- */
.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  width: 100%;
  height: 100%;
}

/* Make sure hero contents sit above the canvas */
.hero-grid {
  position: relative;
  z-index: 2;
}

/* --- Page Transition Overlay (Step 3) --- */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--bg-dark);
  z-index: 9999;
  opacity: 1;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
}

.page-transition-overlay.fade-out {
  opacity: 0;
}

.page-transition-overlay.fade-in {
  opacity: 1;
  pointer-events: all;
}

/* --- Interactive Product Modal (Step 2) --- */
.product-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 7, 18, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease-out, visibility 0.2s;
}

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

.product-modal-container {
  background: var(--panel-dark);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 90%;
  overflow: hidden;
  box-shadow: var(--shadow-panel), var(--shadow-neon);
  transform: scale(0.9);
  transition: transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
}

.product-modal.active .product-modal-container {
  transform: scale(1);
}

.product-modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition-fast);
  z-index: 10;
}

.product-modal-close:hover {
  background: var(--accent-cyan);
  color: #fff;
  box-shadow: var(--shadow-neon);
}

.product-modal-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
}

.product-modal-media {
  position: relative;
  aspect-ratio: 4/5;
  background: var(--bg-slate);
}

.product-modal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.8);
}

.product-modal-content {
  padding: 3rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  justify-content: center;
}

.product-modal-content h3 {
  font-size: 2.2rem;
  color: #fff;
  line-height: 1.1;
}

.product-modal-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.product-modal-specs {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1.2rem 0;
}

.product-modal-spec-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.95rem;
}

.product-modal-spec-item span:first-child {
  color: var(--text-muted);
  font-weight: 500;
}

.product-modal-spec-item span:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

.product-modal-actions {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}

@media (max-width: 768px) {
  .product-modal-grid {
    grid-template-columns: 1fr;
  }
  .product-modal-media {
    display: none;
  }
  .product-modal-content {
    padding: 2.5rem 1.8rem 1.8rem;
  }
}

/* --- Dropdown Menu CSS --- */
.nav-item.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-slate);
  border: 1px solid var(--border-glass);
  border-top: 2px solid var(--accent-cyan);
  min-width: 220px;
  list-style: none;
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  box-shadow: var(--shadow-panel);
  z-index: 200;
}

.nav-item.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 0.7rem 1.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
  text-align: left;
}

.dropdown-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  padding-left: 1.8rem;
}

.dropdown-toggle::after {
  content: ' ▾';
  font-size: 0.75rem;
  opacity: 0.7;
}

/* --- Header Controls (Language and Theme) --- */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
}

.control-btn {
  background: rgba(255, 255, 255, 0.03) !important;
  color: var(--text-secondary) !important;
  border: 1px solid var(--border-glass) !important;
  padding: 0.4rem 0.8rem !important;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  cursor: pointer;
  transition: var(--transition-fast) !important;
  text-transform: uppercase;
}

.control-btn:hover {
  color: var(--text-primary) !important;
  border-color: var(--accent-cyan) !important;
  background: rgba(255, 255, 255, 0.08) !important;
}

/* --- Expanded Footer Grid --- */
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 4rem;
  text-align: left;
  width: 100%;
  margin-bottom: 3rem;
}

.footer-info {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  align-items: flex-start;
}

.footer-info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.footer-links-col h4 {
  font-family: 'Rajdhani', sans-serif;
  color: #fff;
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--accent-cyan);
  padding-bottom: 0.5rem;
  display: inline-block;
  align-self: flex-start;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.footer-link-address {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.5;
  transition: var(--transition-fast);
}

.footer-link-address:hover {
  color: var(--accent-cyan);
  text-decoration: underline;
}


/* Spec Dashboard */
.spec-dashboard-grid {
  height: auto !important;
  padding: 2.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  background: var(--panel-glass) !important;
  border: 1px solid var(--border-glass);
}

.spec-chart-container {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.spec-bar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.spec-bar-bg {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
}

.spec-bar-fill {
  height: 100%;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.2s cubic-bezier(0.25, 1, 0.3, 1);
}

.reveal.is-visible .spec-bar-fill {
  transform: scaleX(1);
}

.spec-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.metric-box {
  border: 1px solid var(--border-glass);
  padding: 1.8rem;
  background: rgba(255, 255, 255, 0.01);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.25, 1, 0.3, 1), border-color 0.15s ease, background-color 0.15s ease;
}

.reveal.is-visible .metric-box {
  opacity: 1;
  transform: translateY(0);
}

.reveal.is-visible .metric-box:nth-child(1) { transition-delay: 0.1s; }
.reveal.is-visible .metric-box:nth-child(2) { transition-delay: 0.2s; }
.reveal.is-visible .metric-box:nth-child(3) { transition-delay: 0.3s; }
.reveal.is-visible .metric-box:nth-child(4) { transition-delay: 0.4s; }

.metric-box:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 180, 216, 0.03);
}


.metric-box-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-box-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
}

body.theme-light .spec-bar-bg {
  background: rgba(0, 0, 0, 0.05);
}
body.theme-light .metric-box {
  background: rgba(0, 0, 0, 0.01);
}

@media (max-width: 768px) {
  .spec-dashboard-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.5rem;
  }
}

/* --- Light Theme Override --- */
body.theme-light {
  --bg-dark: #eef2f6; /* Soft corporate grey-blue background (not white) */
  --bg-slate: #e2e8f0; /* Darker slate-grey background */
  --panel-dark: #ffffff; /* Solid white panel cards for crisp separation and readability */
  --panel-glass: rgba(255, 255, 255, 0.9);
  --border-glass: rgba(15, 23, 42, 0.12); /* Clean visible border */
  --border-focus: #0056b3;
  
  --text-primary: #0b1329; /* Deep navy-black text for very high readability */
  --text-secondary: #243049; /* Darker grey-blue */
  --text-muted: #5e6f88;
  
  --accent-cyan: #0284c7; /* Lighter sky blue for highlights */
  --accent-blue: #0056b3; /* Premium Teknosis logo blue */
  --accent-gradient: linear-gradient(135deg, #0056b3 0%, #0284c7 100%);
  --accent-glow: rgba(0, 86, 179, 0.1);
  --success: #0b1329;
  
  background: 
    radial-gradient(1000px circle at 90% -10%, rgba(0, 86, 179, 0.06), transparent 70%),
    radial-gradient(800px circle at -10% 40%, rgba(2, 132, 199, 0.04), transparent 60%),
    #eef2f6 !important;
  color: var(--text-primary);
}

body.theme-light .grid-overlay {
  opacity: 0.015;
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.08) 1px, transparent 1px);
}

body.theme-light .hero-overlay {
  background: linear-gradient(to bottom, rgba(248, 250, 252, 0.6) 0%, #f8fafc 100%);
}

body.theme-light .hero-bg,
body.theme-light .page-hero-bg {
  filter: brightness(0.85) contrast(1.05) !important;
}

body.theme-light .logo-img,
body.theme-light .footer-logo {
  filter: brightness(0.15) !important; /* Make white logo dark in light theme */
}

body.theme-light .card {
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
}

body.theme-light .card:hover {
  border-color: var(--accent-blue);
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.08);
}

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

body.theme-light .dropdown-menu {
  background: var(--panel-dark);
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-top: 2px solid var(--accent-cyan);
}

body.theme-light .header {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

body.theme-light .kpi-number {
  color: var(--accent-blue) !important;
}

body.theme-light .dropdown-link {
  color: var(--text-secondary);
}

body.theme-light .dropdown-link:hover {
  background: rgba(0, 86, 179, 0.05);
  color: var(--accent-blue);
}

body.theme-light .menu-toggle {
  color: var(--text-primary);
}

/* Mobile Nav Light Theme Override */
@media (max-width: 768px) {
  body.theme-light .nav {
    background: var(--panel-dark) !important;
    border: 1px solid rgba(15, 23, 42, 0.1) !important;
  }
  body.theme-light .dropdown-menu {
    background: rgba(15, 23, 42, 0.03) !important;
    border: none !important;
    border-left: 2px solid var(--accent-cyan) !important;
  }
}

body.theme-light .ai-chat-window {
  background: #ffffff;
  color: #0f172a;
}
body.theme-light .ai-message.bot {
  background: rgba(0, 0, 0, 0.03);
  color: #0f172a;
}
body.theme-light .ai-chat-suggestions .ai-suggest-btn {
  background: rgba(0, 0, 0, 0.01);
  color: #334155;
}
body.theme-light .ai-chat-suggestions .ai-suggest-btn:hover {
  background: rgba(0, 0, 0, 0.04);
  color: #0f172a;
}
body.theme-light .ai-chat-input {
  background: rgba(0, 0, 0, 0.02);
  color: #0f172a;
  border-color: rgba(0, 0, 0, 0.1);
}
body.theme-light .ai-chat-input:focus {
  border-color: var(--accent-blue);
}
body.theme-light .ai-chat-header h4 {
  color: #0f172a;
}

body.theme-light input, 
body.theme-light select, 
body.theme-light textarea {
  background: rgba(0, 0, 0, 0.02);
  color: #0f172a;
  border-color: rgba(0, 0, 0, 0.1);
}

body.theme-light input:focus, 
body.theme-light select:focus, 
body.theme-light textarea:focus {
  border-color: var(--accent-blue);
}

body.theme-light .configurator-card {
  background: rgba(0, 0, 0, 0.01);
  border-color: rgba(0, 0, 0, 0.1);
}
body.theme-light .configurator-card.selected {
  border-color: var(--accent-blue);
  background: rgba(0, 86, 179, 0.05);
}

body.theme-light .step-dot {
  background: rgba(0, 0, 0, 0.05);
  color: #64748b;
  border-color: rgba(0, 0, 0, 0.1);
}
body.theme-light .step-dot.active {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}
body.theme-light .step-dot.completed {
  background: #cbd5e1;
  color: #64748b;
}

body.theme-light .step-progress-bar {
  background: var(--accent-blue);
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
  .footer-grid {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav-item.dropdown {
    width: 100%;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    display: none;
    transform: none;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    border-left: 2px solid var(--accent-cyan);
    padding: 0.5rem 0 0.5rem 1rem;
    box-shadow: none;
    margin-top: 0.5rem;
    width: 100%;
  }
  
  .nav-item.dropdown.active .dropdown-menu {
    display: block;
  }
  
  .nav-controls {
    margin-left: 0;
    margin-top: 1rem;
    justify-content: space-between;
    width: 100%;
  }
  
  .nav-controls .control-btn {
    flex-grow: 1;
    text-align: center;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* --- Step-by-Step Quote Builder --- */
.step-progress {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  position: relative;
  grid-column: span 2;
}

.step-progress::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border-glass);
  z-index: 1;
  transform: translateY(-50%);
}

.step-progress-bar {
  position: absolute;
  top: 50%;
  left: 0;
  height: 2px;
  background: var(--accent-gradient);
  z-index: 1;
  transform: translateY(-50%);
  transition: width 0.3s ease;
  width: 0%;
}

.step-dot {
  width: 32px;
  height: 32px;
  background: var(--bg-slate);
  border: 2px solid var(--border-glass);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  z-index: 2;
  font-family: 'Rajdhani', sans-serif;
  transition: var(--transition-fast);
}

.step-dot.active {
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: var(--shadow-neon);
}

.step-dot.completed {
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  color: #000;
}

.step-panel {
  display: none;
  grid-column: span 2;
  animation: fadeIn 0.3s ease;
}

.step-panel.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.8rem;
}

.configurator-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  grid-column: span 2;
}

.configurator-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
}

.configurator-card:hover {
  border-color: var(--border-focus);
  background: rgba(255, 255, 255, 0.04);
}

.configurator-card.selected {
  border-color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: var(--shadow-neon);
}

.configurator-card h5 {
  font-size: 1.25rem;
  color: #fff;
  margin-top: 0.5rem;
}

.step-options-container {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  background: rgba(3, 7, 18, 0.2);
}

.step-options-container h4 {
  grid-column: span 2;
  color: #fff;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--accent-cyan);
  width: 18px;
  height: 18px;
}

.step-actions {
  grid-column: span 2;
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
}

/* --- AI Assistant Widget --- */
.ai-assistant-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
}

.ai-assistant-btn {
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border: 1px solid var(--border-glass);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-panel), var(--shadow-neon);
  transition: var(--transition-smooth);
}

.ai-assistant-btn:hover {
  transform: translateY(-3px) scale(1.05);
}

.ai-chat-window {
  position: fixed;
  bottom: 6.5rem;
  right: 2rem;
  width: 380px;
  height: 500px;
  background: var(--panel-dark);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-panel), var(--shadow-neon);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.ai-chat-window.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.ai-chat-header {
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-glass);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.ai-chat-header h4 {
  color: #fff;
  font-size: 1.1rem;
}

.ai-chat-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.ai-chat-close:hover {
  color: #fff;
}

.ai-chat-messages {
  flex-grow: 1;
  padding: 1.2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ai-message {
  max-width: 80%;
  padding: 0.8rem 1rem;
  font-size: 0.9rem;
  line-height: 1.4;
}

.ai-message.bot {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  align-self: flex-start;
  border-left: 2px solid var(--accent-cyan);
}

.ai-message.user {
  background: var(--accent-blue);
  color: #fff;
  align-self: flex-end;
}

.ai-chat-suggestions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.ai-suggest-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.5rem;
  font-size: 0.8rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition-fast);
}

.ai-suggest-btn:hover {
  border-color: var(--accent-cyan);
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.ai-chat-input-area {
  padding: 1rem;
  border-top: 1px solid var(--border-glass);
  display: flex;
  gap: 0.5rem;
}

.ai-chat-input {
  flex-grow: 1;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-glass);
  padding: 0.6rem 1rem;
  color: #fff;
  font-size: 0.9rem;
}

.ai-chat-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.ai-chat-send {
  background: var(--accent-gradient);
  border: none;
  color: #000;
  padding: 0.6rem 1.2rem;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Rajdhani', sans-serif;
  transition: var(--transition-fast);
}

.ai-chat-send:hover {
  transform: translateY(-1px);
}

/* --- 3D Model Viewer Container --- */
.viewer-container {
  border: 1px solid var(--border-glass);
  background: rgba(3, 7, 18, 0.4);
  height: 500px;
  position: relative;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .step-panel.active {
    grid-template-columns: 1fr;
  }
  .ai-chat-window {
    width: 90%;
    right: 5%;
    left: 5%;
    bottom: 5.5rem;
  }
}

/* Show theme toggle button */
#themeToggle {
  display: inline-block;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  left: 2rem; /* Keep chatbot on right, back to top on left for visual balance */
  width: 45px;
  height: 45px;
  background: var(--accent-gradient);
  border: 1px solid var(--border-glass);
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

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

.back-to-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 0 15px rgba(0, 86, 179, 0.45);
}

/* Language display toggles for long text articles */
html[lang="tr"] .lang-en {
  display: none !important;
}
html[lang="en"] .lang-tr {
  display: none !important;
}

/* Legal Page Custom Layout */
.legal-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3.5rem;
  align-items: start;
  margin-top: 2rem;
  margin-bottom: 4rem;
}

@media (max-width: 992px) {
  .legal-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.legal-sidebar {
  position: sticky;
  top: 100px;
  background: var(--bg-slate);
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.legal-sidebar-link {
  display: block;
  width: 100%;
  padding: 0.8rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  border-left: 3px solid transparent;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-fast);
}

.legal-sidebar-link:hover {
  color: var(--accent-cyan);
  background: rgba(255, 255, 255, 0.02);
  border-left-color: var(--accent-blue);
}

.legal-sidebar-link.active {
  color: var(--text-primary);
  background: rgba(0, 86, 179, 0.1);
  border-left-color: var(--accent-cyan);
}

.legal-content {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.legal-section {
  display: none;
  scroll-margin-top: 120px;
  background: var(--bg-slate);
  border: 1px solid var(--border-glass);
  padding: 2.5rem;
}

.legal-section.active {
  display: block;
}


.legal-section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 0.5rem;
}

.legal-section h3 {
  font-size: 1.3rem;
  margin-top: 1.8rem;
  margin-bottom: 0.8rem;
  color: var(--accent-cyan);
}

.legal-section p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.legal-section ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.legal-section li {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

/* Temporary hide ELD & MRO section */
li:has(> a[href="eld-mro"]),
li:has(> a[href="eld-mro.html"]) {
  display: none !important;
}

article.card:has(a[href="eld-mro"]),
article.card:has(a[href="eld-mro.html"]) {
  display: none !important;
}

option[value="lifecycle"] {
  display: none !important;
}

.ai-suggest-btn[data-key="ai_q2"] {
  display: none !important;
}

.cards-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}