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

:root {
  --color-bg: #396fec;
  --color-bg-light: #1e293b;
  --color-primary: #2dd4bf;
  --color-text: #f1f5f9;
  --color-text-muted: #cbcfd6;
  --color-border: #334155;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

@media (min-width: 768px) {
  h1 { font-size: 3.5rem; }
  h2 { font-size: 2.5rem; }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background-color: #14b8a6;
}

.btn-secondary {
  background-color: var(--color-bg-light);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-border);
}

.btn-full {
  width: 100%;
}

/* Desktop shell */
.site-layout {
  min-height: 100vh;
}

.page-content {
  width: 100%;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  background-color: rgba(30, 41, 59, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
  padding: 0 1.5rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

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

.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 4rem;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem;
  gap: 0;
}

.nav-menu.active li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-menu.active li:last-child {
  border-bottom: none;
}

.nav-menu a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Language Switcher */
.lang-switch {
  border-bottom: none !important;
}

.lang-link {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 0.375rem;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.lang-link:hover {
  border-color: var(--color-primary);
  background-color: rgba(45, 212, 191, 0.1);
}

@media (min-width: 768px) {
  .site-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
  }

  .navbar {
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid var(--color-border);
    border-bottom: none;
    align-self: start;
  }

  .nav-container {
    max-width: none;
    height: 100%;
    padding: 2rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 2rem;
  }

  .nav-menu {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu a {
    display: block;
  }

  .lang-switch {
    margin-top: 0.75rem;
  }

  .nav-toggle {
    display: none;
  }
}

/* Section Styles */
section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 3rem;
}

/* Hero Section */
.hero {
  padding-top: 3rem;
  padding-bottom: 5rem;
  background: linear-gradient(to bottom, var(--color-bg-light), var(--color-bg));
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.hero-image {
  width: min(260px, 100%);
  aspect-ratio: 4 / 5;
  border-radius: 1rem;
  overflow: hidden;
  border: 4px solid var(--color-primary);
}

@media (min-width: 640px) {
  .hero-image {
    width: 240px;
    height: 310px;
  }
}

@media (min-width: 768px) {
  .hero-image {
    width: 280px;
    height: 360px;
  }
}

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

.subtitle {
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.description {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  margin-top: 1.5rem;
  max-width: 600px;
}

.stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 2.5rem 0;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

@media (min-width: 768px) {
  .hero-content {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: 2.5rem;
  }

  .hero-text {
    text-align: left;
  }

  .stats {
    justify-content: flex-start;
  }

  .hero-buttons {
    justify-content: flex-start;
  }
}

.hero-profile {
  background-color: rgba(30, 41, 59, 0.95);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-title {
  font-size: 1.35rem;
  color: var(--color-primary);
}

.profile-intro {
  color: var(--color-text-muted);
  text-align: left;
}

/* Topics Section */
.topics {
  background-color: var(--color-bg);
}

.topics-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .topics-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.topic-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
}

.topic-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.topic-icon {
  width: 3.5rem;
  height: 3.5rem;
  background-color: rgba(45, 212, 191, 0.1);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--color-primary);
}

.topic-card h3 {
  margin-bottom: 0.75rem;
}

.topic-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Testimonials Section */
.testimonials {
  background-color: var(--color-bg-light);
}

.testimonials-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.testimonial-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 2rem;
}

.quote-icon {
  font-size: 3rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: Georgia, serif;
}

.testimonial-text {
  color: var(--color-text);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author strong {
  display: block;
  color: var(--color-text);
}

.testimonial-author span {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* Agenda Section */
.agenda {
  background-color: var(--color-bg);
}

.agenda-card {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.agenda-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(45, 212, 191, 0.15);
}

.agenda-table {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.agenda-header {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr 1.2fr;
  gap: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1rem;
}

.agenda-header .agenda-col {
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

.agenda-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr 1.2fr;
  gap: 1.5rem;
  padding: 1rem 0;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
}

.agenda-row:last-child {
  border-bottom: none;
}

.agenda-row:hover {
  background-color: rgba(45, 212, 191, 0.05);
  padding-left: 0.5rem;
  margin-left: -0.5rem;
  padding-right: 0.5rem;
  margin-right: -0.5rem;
}

.agenda-col {
  color: var(--color-text);
  font-size: 0.9375rem;
}

.agenda-mobile-icon,
.agenda-mobile-datetext {
  display: none;
}

.agenda-col-date {
  display: flex;
  align-items: center;
}

.date-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  padding: 0.5rem;
  background-color: rgba(45, 212, 191, 0.1);
  border-radius: 0.5rem;
  border: 2px solid var(--color-primary);
}

.date-box .day {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.date-box .month {
  font-size: 0.75rem;
  color: var(--color-primary);
  text-transform: uppercase;
  font-weight: 600;
  margin-top: 0.25rem;
}

.agenda-col-status {
  text-align: center;
}

.status-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
}

.status-tickets {
  background-color: rgba(45, 212, 191, 0.2);
  color: var(--color-primary);
}

.status-laatst-tickets {
  background-color: rgba(251, 191, 36, 0.2);
  color: #fbbf24;
}

.status-uitverkocht {
  background-color: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.status-binnenkort-beschikbaar {
  background-color: rgba(168, 85, 247, 0.2);
  color: #a855f7;
}

.status-last-tickets {
  background-color: rgba(251, 191, 36, 0.2);
  color: #fbbf24;
}

.status-sold-out {
  background-color: rgba(239, 68, 68, 0.2);
  color: #ef4444;
}

.status-coming-soon {
  background-color: rgba(168, 85, 247, 0.2);
  color: #a855f7;
}

@media (max-width: 768px) {
  .agenda-row {
    grid-template-columns: 1fr;
    gap: 0.4rem;
    align-items: start;
  }

  .agenda-header {
    display: none;
  }

  .agenda-card {
    padding: 1rem;
  }

  .agenda-col-date,
  .agenda-col-location,
  .agenda-col-city,
  .agenda-col-status {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-align: left;
  }

  .agenda-row .agenda-col::before {
    content: none;
  }

  .agenda-col-date .date-box {
    display: none;
    min-width: 0;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: 0;
  }

  .agenda-col-date .date-box .day,
  .agenda-col-date .date-box .month {
    display: inline;
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: inherit;
    text-transform: none;
  }

  .agenda-col-date .date-box .month {
    margin-top: 0;
    margin-left: 0.35rem;
  }

  .agenda-mobile-icon {
    display: inline-block;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
  }

  .agenda-mobile-datetext {
    display: inline;
    font-weight: 600;
  }

  .agenda-col-status .status-badge {
    background: none;
    border-radius: 0;
    padding: 0;
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text);
    text-align: left;
  }
}

/* Resources Section */
.resources {
  background-color: var(--color-bg-light);
}

.resource-category {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.resources-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .resources-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.resource-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.resource-card:hover {
  border-color: var(--color-primary);
}

.resource-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.resource-type {
  display: inline-block;
  background-color: rgba(45, 212, 191, 0.1);
  color: var(--color-primary);
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.resource-card h4 {
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.resource-author {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.resource-card p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.link-arrow {
  display: inline-block;
  margin-top: 1rem;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Contact Section */
.contact {
  background-color: var(--color-bg);
}

.contact-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
  max-width: 900px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.contact-icon {
  width: 3rem;
  height: 3rem;
  background-color: rgba(45, 212, 191, 0.1);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  margin-bottom: 0.25rem;
}

.contact-item p {
  color: var(--color-text-muted);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-link {
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.social-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  font-size: 0.9375rem;
}

.form-group input,
.form-group textarea {
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 0.875rem 1rem;
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

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

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

/* Footer */
.footer {
  background-color: var(--color-bg-light);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
}

.footer p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}