/* Vitaal Nissewaard — teaser page
   Palette: slate teal #355B6E, soft cyan #64B1C2, warm off-white surfaces */

:root {
  --color-primary: #355b6e;
  --color-primary-dark: #2a4a59;
  --color-accent: #64b1c2;
  --color-accent-soft: #e8f4f7;
  --color-surface: #f7f9fa;
  --color-surface-warm: #f3f1ed;
  --color-card: #ffffff;
  --color-text: #1f2a30;
  --color-text-muted: #5a6a72;
  --color-border: #d9e3e7;
  --color-focus: #1a6b7c;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.75rem;
  --shadow-card: 0 8px 24px rgba(53, 91, 110, 0.1);
  --shadow-soft: 0 4px 16px rgba(53, 91, 110, 0.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    sans-serif;
  --space-section: clamp(3rem, 6vw, 5rem);
  --max-width: 70rem;
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-underline-offset: 0.15em;
}

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

a:focus-visible,
.btn:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

h1,
h2,
h3 {
  line-height: 1.25;
  color: var(--color-primary-dark);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h3 {
  font-size: 1.125rem;
}

p {
  margin: 0 0 1rem;
}

p:last-child {
  margin-bottom: 0;
}

address {
  font-style: normal;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
  color: #fff;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease, transform 0.15s ease;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-primary-dark);
  background: var(--color-accent-soft);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
  padding-block: 0.65rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}

.brand:hover {
  color: inherit;
}

.brand-logo {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  border-radius: 0.75rem;
  object-fit: contain;
  background: var(--color-surface);
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.brand-tag {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.2;
}

.header-cta {
  flex-shrink: 0;
}

@media (max-width: 36rem) {
  .header-cta {
    padding-inline: 0.9rem;
    font-size: 0.85rem;
  }

  .brand-tag {
    display: none;
  }
}

/* Hero */

.hero {
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    var(--color-surface) 55%,
    var(--color-accent-soft) 100%
  );
  padding: var(--space-section) 0 calc(var(--space-section) + 2rem);
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 48rem) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 2.5rem;
  }
}

.eyebrow {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero-copy p {
  color: var(--color-text-muted);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 0.5rem;
  box-shadow: var(--shadow-soft);
}

/* Disciplines */

.disciplines {
  margin-top: -3.5rem;
  padding-bottom: var(--space-section);
  position: relative;
  z-index: 1;
}

.section-intro {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 2rem;
}

.section-intro p {
  color: var(--color-text-muted);
  padding-top: 1.5rem;
}

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

@media (min-width: 40rem) {
  .discipline-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 56rem) {
  .discipline-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.discipline-card {
  display: flex;
  flex-direction: column;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.15rem 1.25rem;
  box-shadow: var(--shadow-card);
  min-height: 100%;
}

.discipline-icon {
  width: 3.25rem;
  height: 3.25rem;
  display: grid;
  place-items: center;
  margin-bottom: 0.85rem;
  border-radius: 0.85rem;
  background: var(--color-accent-soft);
  color: var(--color-primary);
}

.discipline-icon img {
  width: 2.25rem;
  height: 2.25rem;
}

.discipline-card h3 {
  margin-bottom: 0.5rem;
}

.discipline-card p {
  flex: 1;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.discipline-link {
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--color-primary);
  margin-top: auto;
}

.discipline-link::after {
  content: " →";
}

.discipline-link:hover {
  color: var(--color-accent);
}

/* About */

.about {
  background: var(--color-surface-warm);
  padding: var(--space-section) 0;
}

.about-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 52rem) {
  .about-grid {
    grid-template-columns: 1.4fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

.about-copy p {
  color: var(--color-text-muted);
  max-width: 40rem;
}

.about-aside {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-soft);
}

.about-aside h3 {
  margin-bottom: 1rem;
}

.about-aside ul {
  display: grid;
  gap: 0.75rem;
}

.about-aside li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--color-text-muted);
}

.about-aside li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Contact */

.contact {
  padding: var(--space-section) 0;
  background: linear-gradient(
    180deg,
    var(--color-surface) 0%,
    var(--color-accent-soft) 100%
  );
}

.contact-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  box-shadow: var(--shadow-card);
}

.contact-intro {
  max-width: 40rem;
  margin-bottom: 2rem;
}

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

.contact-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 48rem) {
  .contact-grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
  }
}

.contact-block h3 {
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid var(--color-accent-soft);
}

.contact-list {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  margin-bottom: 0.2rem;
}

.contact-list a {
  font-weight: 600;
  font-size: 1.1rem;
  text-decoration: none;
}

.contact-list a:hover {
  text-decoration: underline;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hours {
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.hours > div {
  display: grid;
  gap: 0.15rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--color-border);
}

.hours > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.hours dt {
  font-weight: 600;
  color: var(--color-primary-dark);
}

.hours dd {
  margin: 0;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  background: var(--color-primary-dark);
  color: #d7e6eb;
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: end;
}

.site-footer strong {
  color: #fff;
}

.site-footer a {
  color: #fff;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.9rem;
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn {
    transition: none;
  }
}