/* AI.Balloon.Art - Main Stylesheet */

:root {
  --color-primary: #D90689;
  --color-primary-dark: #B00570;
  --color-secondary: #4A1977;
  --color-light: #F4C9D3;
  --color-lighter: #FDF0F3;
  --color-dark: #2D2D2D;
  --color-gray: #6B7280;
  --color-gray-light: #E5E7EB;
  --font-body: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --max-width: 1200px;
  --transition: 0.2s ease;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-dark);
  line-height: 1.6;
  background: #fff;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

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

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-light);
  padding: 0 1.5rem;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--color-primary); }

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

.nav-links a {
  color: var(--color-dark);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-primary); }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-hamburger svg { width: 24px; height: 24px; }

/* ── Hero ── */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 1.5rem;
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='8' fill='rgba(255,255,255,0.05)'/%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-content { position: relative; max-width: 700px; }

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.9;
  margin-bottom: 2rem;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.hero-stat-label {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-white { background: #fff; color: var(--color-primary); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-outline { background: transparent; border: 2px solid var(--color-primary); color: var(--color-primary); }

/* ── Section ── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-secondary);
}

.section-subtitle {
  color: var(--color-gray);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

/* ── Gallery Filters ── */
.gallery-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-input {
  flex: 1;
  min-width: 200px;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.search-input:focus { outline: none; border-color: var(--color-primary); }

.filter-select {
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  cursor: pointer;
}

.filter-chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.chip {
  padding: 0.375rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 2px solid var(--color-gray-light);
  background: #fff;
  color: var(--color-dark);
  transition: all var(--transition);
}

.chip:hover { border-color: var(--color-primary); color: var(--color-primary); }
.chip.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.chip-collection { border-color: var(--color-secondary); color: var(--color-secondary); font-style: italic; }
.chip-collection.active { background: var(--color-secondary); color: #fff; border-color: var(--color-secondary); }

/* ── Collection Header ── */
.collection-header {
  grid-column: 1 / -1;
  margin-bottom: 0.5rem;
}

.collection-header h2 {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin-bottom: 0.25rem;
}

.collection-header p {
  color: var(--color-gray);
  font-size: 0.95rem;
}

/* ── Gallery Grid ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.gallery-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-gray);
}

/* ── Design Card ── */
.card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}

.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.card-img {
  width: 100%;
  object-fit: contain;
  background: var(--color-lighter);
}

.card-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--color-lighter) 0%, var(--color-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 3rem;
}

.card-body { padding: 1rem; }

.card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--color-dark);
}

.card-nickname {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-style: italic;
  margin-bottom: 0.5rem;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.card-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-lighter);
  color: var(--color-secondary);
}

.card-badge.no-bouwplan {
  background: var(--color-gray-light);
  color: var(--color-gray);
}

.card-id {
  font-size: 0.75rem;
  color: var(--color-gray);
  margin-left: auto;
}

/* ── Featured Grid (landing page) ── */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* ── About Page ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text h2 {
  font-size: 1.5rem;
  color: var(--color-secondary);
  margin: 2rem 0 0.75rem;
}

.about-text h2:first-child { margin-top: 0; }

.about-text p { margin-bottom: 1rem; color: #444; }

.about-visual {
  background: var(--color-lighter);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}

.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item {
  background: var(--color-lighter);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.feature-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--color-secondary);
}

.feature-item p { font-size: 0.95rem; color: #555; }

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-form { display: flex; flex-direction: column; gap: 1rem; }

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

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

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

.contact-info h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.contact-info p { margin-bottom: 1.5rem; color: #555; }

/* ── Footer ── */
.footer {
  background: var(--color-dark);
  color: #fff;
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.9rem;
}

.footer a { color: var(--color-light); }

/* ── Language Switcher ── */
.lang-switcher { position: relative; }

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: none;
  border: none;
  color: var(--color-dark);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem;
}

.lang-btn:hover { color: var(--color-primary); }

.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  background: #fff;
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 80px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 200;
}

.lang-switcher.open .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
}

.lang-option:hover { background: var(--color-lighter); }
.lang-option.active { color: var(--color-primary); font-weight: 600; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-gray-light);
    gap: 1rem;
  }
  .nav-hamburger { display: block; }

  .hero { min-height: 60vh; }

  .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 1rem; }

  .about-grid,
  .contact-grid,
  .feature-list { grid-template-columns: 1fr; }

  .hero-stats { gap: 1rem; }
}