/* ============================================================
   VSK 61 Transport — Stylesheet
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --navy:        #0d2137;
  --navy-light:  #1a3652;
  --orange:      #f97316;
  --orange-dark: #ea6c0a;
  --white:       #ffffff;
  --off-white:   #f8fafc;
  --text:        #1e293b;
  --text-light:  #64748b;
  --border:      #e2e8f0;
  --success:     #22c55e;
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:   0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.14);
  --radius:      12px;
  --radius-sm:   8px;
  --transition:  0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

address {
  font-style: normal;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--off-white);
}

/* --- Typography --- */
h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 800;
  color: var(--navy);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.3rem; }

p {
  color: var(--text-light);
  line-height: 1.75;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.75rem;
}

.section-label.light {
  color: rgba(249,115,22,0.9);
}

.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 3.5rem;
}

.section-header p {
  margin-top: 0.75rem;
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* --- Logo --- */
.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.logo-box {
  width: 44px;
  height: 44px;
  background: var(--orange);
  color: var(--white);
  font-size: 1.15rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition);
}

.logo:hover .logo-box {
  background: var(--orange-dark);
}

.logo-name {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name strong {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  transition: color var(--transition);
}

.logo-name small {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

/* Scrolled state */
.navbar.scrolled .logo-name strong {
  color: var(--navy);
}

.navbar.scrolled .logo-name small {
  color: var(--text-light);
}

/* Footer logo */
.footer-logo .logo-name strong {
  color: var(--white);
}

.footer-logo .logo-name small {
  color: rgba(255,255,255,0.5);
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}

.navbar.scrolled {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  padding: 0.6rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.5rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255,255,255,0.88);
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.navbar.scrolled .nav-link {
  color: var(--text);
}

.navbar.scrolled .nav-link:hover {
  color: var(--orange);
  background: rgba(249,115,22,0.07);
}

/* Language toggle */
.lang-btn {
  margin-left: 0.5rem;
  padding: 0.4rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1.5px solid rgba(255,255,255,0.45);
  border-radius: 50px;
  background: transparent;
  color: rgba(255,255,255,0.88);
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.lang-btn:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
  color: var(--white);
}

.navbar.scrolled .lang-btn {
  border-color: var(--border);
  color: var(--text);
}

.navbar.scrolled .lang-btn:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  z-index: 10;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.navbar.scrolled .hamburger span {
  background: var(--navy);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(13,33,55,0.93) 0%, rgba(13,33,55,0.72) 60%, rgba(249,115,22,0.25) 100%),
    url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?w=1920&q=80&auto=format&fit=crop')
    center / cover no-repeat;
  background-color: var(--navy);
}

.hero-content {
  padding-top: 100px;
  padding-bottom: 80px;
  max-width: 750px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(249,115,22,0.18);
  border: 1px solid rgba(249,115,22,0.4);
  color: #ffb980;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  max-width: 540px;
  margin-bottom: 2.25rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Scroll indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.hero-scroll-indicator span {
  display: block;
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  animation: scroll-bounce 2s ease infinite;
}

@keyframes scroll-bounce {
  0%, 100% { top: 5px; opacity: 1; }
  50%       { top: 16px; opacity: 0.3; }
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: var(--navy);
  padding: 2.5rem 0;
}

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

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.35rem;
}

.stat-item i {
  font-size: 1.5rem;
  color: var(--orange);
  margin-bottom: 0.2rem;
}

.stat-item strong {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}

.stat-item span {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

.about-badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: var(--white);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
}

.about-badge i {
  color: var(--orange);
  font-size: 1.1rem;
}

.about-text h2 {
  margin-bottom: 1rem;
}

.about-text p {
  margin-bottom: 0.85rem;
}

.about-list {
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 500;
}

.about-list li i {
  color: var(--orange);
  font-size: 0.85rem;
  background: rgba(249,115,22,0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ============================================================
   SERVICES
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.2rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-card.featured {
  background: var(--navy);
  border-color: var(--navy);
}

.service-card.featured h3,
.service-card.featured p {
  color: rgba(255,255,255,0.9);
}

.service-card.featured p {
  color: rgba(255,255,255,0.65);
}

.service-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--orange);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
  text-transform: uppercase;
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: rgba(249,115,22,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
  color: var(--orange);
  transition: background var(--transition);
}

.service-card.featured .service-icon {
  background: rgba(249,115,22,0.2);
}

.service-card:hover .service-icon {
  background: rgba(249,115,22,0.18);
}

.service-card h3 {
  margin-bottom: 0.65rem;
}

/* ============================================================
   AREA
   ============================================================ */
.area-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.area-text h2 {
  margin-bottom: 1rem;
}

.area-text p {
  margin-bottom: 1.75rem;
}

.area-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}

.area-tags span {
  background: var(--navy);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  letter-spacing: 0.02em;
}

.area-map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.area-map iframe {
  display: block;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 2.5rem;
  color: var(--white);
  height: 100%;
}

.contact-info h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.contact-info p {
  color: rgba(255,255,255,0.65);
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(249,115,22,0.18);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-item > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact-item strong {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}

.contact-item span,
.contact-item address,
.contact-item a {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.5;
}

.contact-item a:hover {
  color: var(--orange);
}

/* Form */
.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(249,115,22,0.12);
}

.form-group input.invalid,
.form-group textarea.invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.1);
}

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

/* Success message */
.form-success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  color: #15803d;
  font-size: 0.92rem;
  font-weight: 500;
}

.form-success i {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.hidden {
  display: none !important;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--navy);
  color: var(--white);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 3rem;
  padding: 4rem 1.5rem 3rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 1.1rem;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  font-size: 0.92rem;
  color: rgba(255,255,255,0.65);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--orange);
}

.footer-contact address,
.footer-contact a,
.footer-contact p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
}

.footer-contact a:hover {
  color: var(--orange);
}

.kvk-tag {
  margin-top: 0.4rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35) !important;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.25rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

/* ============================================================
   SCROLL-TO-TOP BUTTON
   ============================================================ */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  background: var(--orange);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top:hover {
  background: var(--orange-dark);
  transform: translateY(-3px);
}

/* ============================================================
   ANIMATIONS (Intersection Observer)
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.services-grid .service-card:nth-child(1) { transition-delay: 0s; }
.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }

.stats-grid .stat-item:nth-child(1) { transition-delay: 0s; }
.stats-grid .stat-item:nth-child(2) { transition-delay: 0.08s; }
.stats-grid .stat-item:nth-child(3) { transition-delay: 0.16s; }
.stats-grid .stat-item:nth-child(4) { transition-delay: 0.24s; }

/* ============================================================
   RESPONSIVE — TABLET (≤ 992px)
   ============================================================ */
@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .about-grid,
  .area-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .about-image img {
    height: 380px;
  }

  .about-image {
    order: -1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  /* Navbar mobile */
  .hamburger {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.25rem;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-link {
    color: var(--text);
    font-size: 1.05rem;
    width: 100%;
    padding: 0.7rem 1rem;
  }

  .nav-link:hover {
    color: var(--orange);
    background: rgba(249,115,22,0.07);
  }

  .lang-btn {
    border-color: var(--border);
    color: var(--text);
    margin-left: 1rem;
    margin-top: 0.5rem;
  }

  /* Hero */
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  .hero-content {
    padding-top: 80px;
  }

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

  .area-tags span {
    font-size: 0.78rem;
  }

  .contact-form-wrap,
  .contact-info {
    padding: 1.75rem 1.25rem;
  }

  .scroll-top {
    bottom: 1.25rem;
    right: 1.25rem;
  }
}