/* css/style.css */

:root {
  --bg-color: #0b0b0d;
  --header-bg: rgba(11, 11, 13, 0.9);
  --accent-gold: #c29b38;
  --accent-gold-hover: #dfb242;
  --text-white: #ffffff;
  --text-muted: #a3a3a3;
  --border-color: rgba(255, 255, 255, 0.08);
  --font-family: 'Montserrat', sans-serif;
  --transition: all 0.3s ease;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-white);
  font-family: var(--font-family);
  line-height: 1.6;
}

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease, padding 0.3s ease;
}

.header-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: padding 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(11, 11, 13, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.site-header.scrolled .header-container {
  padding: 0.75rem 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

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

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  transition: var(--transition);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link.active {
  color: var(--text-white);
}

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

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

.nav-link:hover {
  color: var(--text-white);
}

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

.btn {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--accent-gold);
  color: #0b0b0d;
  border: 1px solid var(--accent-gold);
}

.btn-primary:hover {
  background: var(--accent-gold-hover);
  border-color: var(--accent-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(194, 155, 56, 0.3);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-white);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle.open .bar:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.menu-toggle.open .bar:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open .bar:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

.hero-panels-section {
  width: 100%;
  max-width: 1240px;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

.panels-container {
  display: flex;
  flex-direction: row;
  width: 100%;
  height: 500px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

.panel {
  position: relative;
  flex: 1;
  height: 100%;
  overflow: hidden;
  cursor: pointer;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 2.5rem 1.5rem;
  background-color: #121216;
  min-width: 0;
  transition: flex 0.6s cubic-bezier(0.25, 1, 0.5, 1), background-color 0.4s ease;
}

.panel:last-child {
  border-right: none;
}

.panel-background {
  position: absolute;
  inset: 0;
  background-color: #121216;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    radial-gradient(circle at 50% 100%, rgba(194, 155, 56, 0.05) 0%, transparent 70%);
  background-size: 32px 32px, 32px 32px, 100% 100%;
  opacity: 0.85;
  transition: opacity 0.5s ease, background-image 0.5s ease;
  pointer-events: none;
}

.panel-header {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  pointer-events: none;
}

.panel-index {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 1px;
  margin-bottom: 2.5rem;
}

.panel-title {
  font-size: clamp(1.25rem, 1.6vw, 1.8rem);
  font-weight: 800;
  color: var(--text-white);
  white-space: nowrap;
  writing-mode: vertical-rl;
  rotate: 180deg;
  margin: 0;
  transition: rotate 0.4s ease, margin 0.3s ease;
}

.panel-content {
  position: absolute;
  bottom: 2.5rem;
  left: 2.5rem;
  right: 2.5rem;
  z-index: 2;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.35s ease, transform 0.4s ease;
  pointer-events: none;
}

.panel-content h3 {
  font-size: 1.5rem;
  color: var(--accent-gold);
  margin-bottom: 0.6rem;
}

.panel-content p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 480px;
  margin-bottom: 1.5rem;
}

.panel-content .btn {
  display: inline-block;
  width: auto;
}

.panel:hover,
.panel.active {
  flex: 3.2;
  background-color: #17171d;
}

.panel:hover .panel-background,
.panel.active .panel-background {
  opacity: 1;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    radial-gradient(circle at 50% 100%, rgba(194, 155, 56, 0.2) 0%, transparent 75%);
}

.panel:hover .panel-header,
.panel.active .panel-header {
  align-items: flex-start;
}

.panel:hover .panel-index,
.panel.active .panel-index {
  margin-bottom: 0.5rem;
}

.panel:hover .panel-title,
.panel.active .panel-title {
  writing-mode: horizontal-tb;
  rotate: 0deg;
  margin-bottom: 0.5rem;
}

.panel:hover .panel-content,
.panel.active .panel-content {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
  transition-delay: 0.18s;
}

/* --- Diensten Sectie --- */
.services-section {
  width: 100%;
  max-width: 1240px;
  margin: 4rem auto 6rem;
  padding: 0 1.5rem;
}

.section-title-wrap {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.section-heading {
  font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

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

.service-card {
  background-color: #121216;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  scroll-margin-top: 100px;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(194, 155, 56, 0.4);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.service-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.service-number {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-gold);
}

.service-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.3rem 0.65rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--text-muted);
}

.service-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 1rem;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.service-features {
  list-style: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.service-features li {
  color: #cfcfcf;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.service-features li::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--accent-gold);
  border-radius: 50%;
  flex-shrink: 0;
}

.service-link {
  color: var(--accent-gold);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: auto;
}

.service-link:hover {
  color: var(--accent-gold-hover);
  transform: translateX(4px);
}

.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: rgba(18, 18, 22, 0.85);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, border-color 0.3s ease, background-color 0.3s ease;
}

.scroll-top-btn::before {
  content: '';
  display: block;
  width: 9px;
  height: 9px;
  border-top: 2px solid var(--accent-gold);
  border-left: 2px solid var(--accent-gold);
  transform: rotate(45deg);
  margin-top: 3px;
  transition: border-color 0.3s ease;
}

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

.scroll-top-btn:hover {
  background-color: var(--accent-gold);
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(194, 155, 56, 0.35);
}

.scroll-top-btn:hover::before {
  border-color: #0b0b0d;
}

@media (max-width: 868px) {
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 65px;
    left: 0;
    width: 100%;
    background-color: #0b0b0d;
    flex-direction: column;
    padding: 2rem 1.5rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: var(--transition);
  }

  .nav-menu.active {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
  }

  .nav-links {
    flex-direction: column;
    width: 100%;
    gap: 1.2rem;
    text-align: center;
  }

  .header-action {
    width: 100%;
    text-align: center;
  }

  .header-action .btn {
    width: 80%;
  }

  .hero-panels-section {
    margin: 1rem auto;
    padding: 0 0.75rem;
    height: auto;
  }

  .panels-container {
    flex-direction: row;
    width: 100%;
    height: 300px;
  }

  .panel {
    flex: 1;
    height: 100%;
    border-right: 1px solid var(--border-color);
    border-bottom: none;
    padding: 1.5rem 0.5rem;
    justify-content: flex-start;
    transition: flex 0.5s cubic-bezier(0.25, 1, 0.5, 1), background-color 0.4s ease;
  }

  .panel:last-child {
    border-right: none;
  }

  .panel-header {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .panel-index {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
  }

  .panel-title {
    writing-mode: vertical-rl;
    rotate: 180deg;
    font-size: 1.1rem;
    margin: 0;
  }

  .panel-content {
    position: absolute;
    bottom: 1.2rem;
    left: 1.2rem;
    right: 1.2rem;
    padding-top: 0;
    max-height: none;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .panel-content h3 {
    font-size: 1.15rem;
    line-height: 1.3;
    margin-bottom: 0.4rem;
  }

  .panel-content p {
    font-size: 0.82rem;
    line-height: 1.45;
    margin-bottom: 1rem;
  }

  .panel-content .btn {
    padding: 0.55rem 1rem;
    font-size: 0.8rem;
    width: auto;
  }

  .panel.active {
    flex: 6;
    padding: 1.5rem 1.2rem;
    background-color: #17171d;
  }

  .panel.active .panel-header {
    align-items: flex-start;
  }

  .panel.active .panel-index {
    margin-bottom: 0.3rem;
  }

  .panel.active .panel-title {
    writing-mode: horizontal-tb;
    rotate: 0deg;
    font-size: 1.35rem;
    margin-bottom: 0.4rem;
  }

  .panel.active .panel-content {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
  }

  .services-section {
    margin: 3rem auto 4rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .service-card {
    padding: 2rem 1.5rem;
  }
  
  .scroll-top-btn {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
  }
}