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

/* Base */
html {
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ===== Header ===== */
.site-header {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 100;
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  min-height: var(--header-height);
}

.site-logo {
  flex-shrink: 0;
}

.site-logo img {
  height: 60px;
  width: auto;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  justify-content: flex-end;
}

.site-nav__link {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-nav__link:hover {
  color: var(--color-primary);
}

.site-nav__link--active {
  color: var(--color-primary);
  font-weight: 600;
}

.site-nav__link--has-sub::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 4px;
  vertical-align: middle;
}

/* Mobile hamburger (hidden on desktop) */
.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-normal);
}

.hamburger--active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav drawer */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 98;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.nav-backdrop--open {
  opacity: 1;
  visibility: visible;
}

.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  background-color: var(--color-bg);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: var(--spacing-3xl) var(--spacing-xl) var(--spacing-xl);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
}

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

.nav-drawer__menu {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.nav-drawer__link {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--color-text);
  text-decoration: none;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-drawer__link--active {
  color: var(--color-primary);
  font-weight: 600;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.5;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-blue);
  color: #fff;
  border-color: var(--color-blue);
}

.btn--primary:hover {
  background-color: var(--color-blue-light);
  border-color: var(--color-blue-light);
  color: #fff;
}

.btn--cta {
  background-color: var(--color-blue);
  color: #fff;
  border-color: #fff;
  border-width: 2px;
  padding: 14px 40px;
  font-size: var(--font-size-md);
}

.btn--cta:hover {
  background-color: var(--color-blue-light);
  color: #fff;
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: #fff;
}

.btn--full {
  width: 100%;
}

/* ===== Hero Section ===== */
.hero {
  background-color: var(--color-bg-hero);
  padding: var(--spacing-3xl) 0;
}

.hero__inner {
  display: flex;
  align-items: center;
  gap: var(--spacing-xxl);
}

.hero__mascot {
  flex-shrink: 0;
  width: 220px;
}

.hero__mascot img {
  width: 100%;
  height: auto;
}

.hero__content {
  flex: 1;
}

.hero__title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero__text {
  font-size: var(--font-size-md);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.hero__text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

/* ===== Filter Bar ===== */
.filter-bar {
  background-color: var(--color-bg-filter);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.filter-bar__search {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.filter-bar__search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

.filter-bar__search-input {
  width: 100%;
  padding: 14px 16px 14px 48px;
  border: none;
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--color-text);
  background-color: #fff;
  box-shadow: var(--shadow-sm);
}

.filter-bar__search-input::placeholder {
  color: var(--color-text-muted);
}

.filter-bar__search-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.filter-bar__dropdowns {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-bar__group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.filter-bar__label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.filter-bar__label svg {
  width: 14px;
  height: 14px;
}

.filter-bar__select {
  padding: 8px 36px 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--border-radius-sm);
  background-color: rgba(255, 255, 255, 0.15);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: #fff;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  min-width: 160px;
}

.filter-bar__select option {
  color: var(--color-text);
  background-color: #fff;
}

.filter-bar__select:focus {
  outline: none;
  border-color: #fff;
}

.filter-bar__results {
  text-align: center;
  padding-top: var(--spacing-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* ===== Activity Cards Grid ===== */
.activities-section {
  background-color: var(--color-bg);
  padding: var(--spacing-xxl) 0;
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.activity-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-text);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.activity-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg-hero);
  overflow: hidden;
}

.activity-card__image::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
}

.activity-card__title {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}

.activity-card__body {
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.activity-card__provider {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

.activity-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.tag--age {
  background-color: var(--color-tag-age);
  color: #fff;
}

.tag--discipline {
  background-color: var(--color-tag-discipline);
  color: #fff;
}

.tag--type {
  background-color: var(--color-tag-discipline);
  color: #fff;
}

.tag--small {
  padding: 2px 8px;
  font-size: 0.65rem;
}

.activity-card__link {
  margin-top: auto;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.activity-card__link:hover {
  text-decoration: underline;
}

.activity-card--unavailable {
  opacity: 0.6;
}

.activity-card--unavailable:hover {
  opacity: 0.8;
}

/* Badge overlay for unavailable */
.activity-card__badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 1;
  padding: 4px 10px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  background-color: rgba(220, 53, 69, 0.9);
  color: #fff;
}

/* ===== No Results ===== */
.no-results {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  color: var(--color-text-light);
  font-size: var(--font-size-md);
}

/* ===== CTA Section ===== */
.cta-section {
  background-color: var(--color-bg-cta);
  padding: var(--spacing-xxl) 0;
}

.cta-section__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.cta-section__text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xxl);
  font-weight: 700;
  font-style: italic;
  color: #fff;
}

/* ===== Footer ===== */
.site-footer {
  margin-top: auto;
}

.site-footer__main {
  background-color: var(--color-bg-footer);
  padding: var(--spacing-lg) 0;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-footer__text {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

.site-footer__text a {
  color: var(--color-primary);
  text-decoration: underline;
}

.site-footer__coat-of-arms {
  flex-shrink: 0;
}

.site-footer__coat-of-arms img {
  height: 60px;
  width: auto;
}

/* ===== Detail Page ===== */
.detail-topbar {
  background-color: var(--color-primary);
  height: 6px;
}

.detail-content {
  padding: var(--spacing-xxl) 0;
}

.detail-tags {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  align-items: flex-start;
}

.detail-title {
  font-size: var(--font-size-hero);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
}

.detail-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-xxl);
  align-items: start;
}

.detail-description {
  font-size: var(--font-size-md);
  line-height: 1.8;
  color: var(--color-text);
}

.detail-description p {
  margin-bottom: var(--spacing-md);
}

.detail-image {
  display: flex;
  justify-content: center;
}

.detail-image img {
  width: 300px;
  height: 300px;
  object-fit: cover;
  border-radius: var(--border-radius-circle);
  border: 6px solid var(--color-bg-hero);
}

.detail-kenmerken {
  margin-top: var(--spacing-xxl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.detail-kenmerken__title {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  color: var(--color-blue);
  margin-bottom: var(--spacing-lg);
}

.detail-kenmerken__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md) var(--spacing-xl);
}

.detail-kenmerken__item dt {
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.detail-kenmerken__item dd {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.detail-actions {
  margin-top: var(--spacing-xxl);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.detail-back {
  margin-top: var(--spacing-xl);
}

.detail-back a {
  font-size: var(--font-size-sm);
  color: var(--color-blue);
  text-decoration: none;
}

.detail-back a:hover {
  text-decoration: underline;
}

/* ===== Error Page ===== */
.error-page {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  min-height: 50vh;
  display: flex;
  align-items: center;
}

.error-page .container {
  width: 100%;
}

.error-page h1 {
  font-size: var(--font-size-xxl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.error-page p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-md);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .site-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .site-header__inner {
    justify-content: space-between;
  }

  .activity-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-layout {
    grid-template-columns: 1fr;
  }

  .detail-image {
    order: -1;
  }

  .detail-kenmerken__list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__mascot {
    width: 160px;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .filter-bar__dropdowns {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-bar__group {
    align-items: stretch;
  }

  .cta-section__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .cta-section__text {
    font-size: var(--font-size-xl);
  }

  .site-footer__inner {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .detail-title {
    font-size: 1.75rem;
  }

  .detail-image img {
    width: 200px;
    height: 200px;
  }
}

@media (max-width: 640px) {
  .activity-grid {
    grid-template-columns: 1fr;
  }
}