/* ================================================
   SR van Leeuwen - Design System & Styles
   ================================================ */

/* -------------------- CSS Variables -------------------- */
:root {
  /* Primary Colors (from logo) */
  --primary-blue: #1B5BBD;
  --primary-blue-dark: #144A9B;
  --primary-blue-light: #3A7DE8;
  --primary-blue-hover: #2968CC;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;
  
  /* Accent Colors */
  --accent-orange: #F97316;
  --accent-orange-hover: #EA580C;
  --success-green: #22C55E;
  --error-red: #EF4444;
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--primary-blue-dark);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* -------------------- Typography -------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--space-md);
}

.text-center { text-align: center; }
.text-white { color: var(--white); }
.text-primary { color: var(--primary-blue); }

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

.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* -------------------- Buttons -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--primary-blue-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn-secondary:hover {
  background: var(--white);
  color: var(--primary-blue);
}

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

.btn-accent:hover {
  background: var(--accent-orange-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* -------------------- Header -------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-menu a {
  color: var(--gray-700);
  font-weight: 500;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-blue);
  transition: width var(--transition-base);
}

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

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

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-phone {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  color: var(--primary-blue);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition-base);
}

/* -------------------- Hero -------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  padding-top: 80px;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-xl);
  filter: brightness(0) invert(1);
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.hero-phone {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
}

.hero-phone svg {
  width: 24px;
  height: 24px;
}

/* -------------------- Services -------------------- */
.services {
  background: var(--gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  background: linear-gradient(135deg, var(--primary-blue-light) 0%, var(--primary-blue) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-icon svg {
  width: 40px;
  height: 40px;
  color: var(--white);
}

.service-card h3 {
  margin-bottom: var(--space-md);
}

.service-card p {
  color: var(--gray-500);
  margin-bottom: var(--space-lg);
}

.service-features {
  text-align: left;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-100);
}

.service-features li:last-child {
  border-bottom: none;
}

.service-features svg {
  width: 18px;
  height: 18px;
  color: var(--success-green);
  flex-shrink: 0;
}

/* -------------------- Portfolio -------------------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.portfolio-item:hover img {
  transform: scale(1.1);
}

.portfolio-item:hover::after {
  opacity: 1;
}

.portfolio-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-lg);
  color: var(--white);
  z-index: 1;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.portfolio-overlay h3 {
  color: var(--white);
  font-size: 1.25rem;
}

.portfolio-item:hover .portfolio-overlay {
  transform: translateY(0);
}

/* -------------------- Contact -------------------- */
.contact {
  background: var(--gray-50);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-info h3 {
  margin-bottom: var(--space-lg);
}

.contact-details {
  margin-bottom: var(--space-2xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 24px;
  height: 24px;
  color: var(--white);
}

.contact-item-content h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.contact-item-content p,
.contact-item-content a {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  height: 300px;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--gray-700);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* -------------------- Footer -------------------- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  margin-top: var(--space-md);
  max-width: 300px;
}

.footer-logo {
  height: 60px;
  filter: brightness(0) invert(1);
}

.footer-links h3,
.footer-contact h3 {
  color: var(--white);
  margin-bottom: var(--space-lg);
  font-size: 1.125rem;
}

.footer-links a {
  display: block;
  color: var(--gray-400);
  padding: var(--space-sm) 0;
  transition: color var(--transition-fast);
}

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

.footer-contact p,
.footer-contact a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  color: var(--gray-400);
}

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

.footer-contact svg {
  width: 18px;
  height: 18px;
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--gray-800);
  text-align: center;
  font-size: 0.875rem;
}

/* -------------------- Lightbox -------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  background: var(--white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.lightbox-close:hover {
  transform: scale(1.1);
}

/* -------------------- Mobile Responsive -------------------- */
@media (max-width: 1024px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
  }
  
  .section {
    padding: var(--space-3xl) 0;
  }
  
  /* Mobile Navigation */
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .header-cta .btn {
    display: none;
  }
  
  /* Hero Mobile */
  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }
  
  .hero-logo {
    width: 80px;
    height: 80px;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  /* Footer Mobile */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-brand p {
    margin: var(--space-md) auto 0;
  }
  
  .footer-contact p,
  .footer-contact a {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}