:root {
  --color-bg: #fbf7f1;
  --color-surface: #ffffff;
  --color-text: #2a2833;
  --color-text-soft: #5c5766;
  --color-primary: #6b4de6;
  --color-primary-dark: #5437c9;
  --color-accent: #f0a500;
  --color-line: #e7e1d6;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(42, 40, 51, 0.08);
  --shadow-lg: 0 24px 60px rgba(42, 40, 51, 0.16);
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-serif: "Playfair Display", Georgia, serif;
  --container: 1140px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

h1,
h2,
h3 {
  font-family: var(--font-serif);
  line-height: 1.15;
  margin: 0 0 0.5em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.6rem);
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

p {
  margin: 0 0 1em;
}

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

.container {
  width: min(var(--container), 100% - 2.5rem);
  margin-inline: auto;
}

.sr-only {
  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;
  top: -60px;
  left: 12px;
  z-index: 200;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 12px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 247, 241, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-text);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), #a96bf0);
  color: #fff;
  font-size: 1.15rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-family: var(--font-serif);
  font-size: 1.15rem;
}

.brand-text small {
  color: var(--color-text-soft);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.main-nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.35rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle .bar {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, box-shadow 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(107, 77, 230, 0.35);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.6);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  color: #fff;
  overflow: hidden;
  padding: clamp(4rem, 10vw, 7.5rem) 0 clamp(3rem, 7vw, 5rem);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(169, 107, 240, 0.55), transparent 60%),
    radial-gradient(800px 450px at 90% 110%, rgba(240, 165, 0, 0.35), transparent 60%),
    linear-gradient(160deg, #241a4d 0%, #3b2a7e 55%, #5437c9 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 80%);
}

.hero-content {
  max-width: 820px;
}

.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 1.25rem;
}

.hero h1 {
  margin-bottom: 0.35em;
}

.hero h1 em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.9);
  max-width: 60ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 1.75rem 0 2.75rem;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.5rem;
  list-style: none;
  margin: 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.hero-stats li {
  display: flex;
  flex-direction: column;
}

.hero-stats strong {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  line-height: 1;
}

.hero-stats span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.78);
}

/* ---------- Sections ---------- */
.section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.section-alt {
  background: var(--color-surface);
  border-block: 1px solid var(--color-line);
}

.section-head {
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.prose {
  color: var(--color-text-soft);
}

.value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.value-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.value-list strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.value-list span {
  color: var(--color-text-soft);
  font-size: 0.95rem;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.6rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.card-icon {
  font-size: 2rem;
  display: inline-block;
  margin-bottom: 0.6rem;
}

.card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  margin: 0;
}

/* ---------- Fächer ---------- */
.subject-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.filter-btn {
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

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

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

.subject-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.subject-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  transition: opacity 0.25s ease, transform 0.25s ease;
  animation: fadeUp 0.35s ease both;
}

.subject-item h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.subject-item .subject-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(107, 77, 230, 0.1);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.subject-item.is-hidden {
  display: none;
}

/* ---------- Team ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.team-card {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.6rem;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.avatar {
  width: 72px;
  height: 72px;
  margin: 0 auto 1rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.4rem;
  color: #fff;
  background: linear-gradient(135deg, hsl(var(--hue), 60%, 55%), hsl(calc(var(--hue) + 40), 60%, 42%));
}

.team-card h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.role {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.7rem;
}

.bio {
  color: var(--color-text-soft);
  font-size: 0.9rem;
  font-style: italic;
  margin: 0;
}

/* ---------- News ---------- */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.news-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.news-card time {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.news-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  flex: 1;
}

.text-link {
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
}

.text-link:hover {
  text-decoration: underline;
}

/* ---------- Kontakt ---------- */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info {
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.6rem;
}

.contact-info address {
  font-style: normal;
  margin-bottom: 1.2rem;
}

.contact-info a {
  text-decoration: none;
}

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

.contact-hours {
  color: var(--color-text-soft);
  font-size: 0.92rem;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-line);
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.6rem;
}

.form-row {
  margin-bottom: 1.1rem;
}

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  font: inherit;
  background: var(--color-bg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(107, 77, 230, 0.15);
}

.form-row.is-invalid input,
.form-row.is-invalid textarea {
  border-color: #d64545;
}

.form-error {
  display: none;
  color: #d64545;
  font-size: 0.82rem;
  margin-top: 0.3rem;
}

.form-row.is-invalid .form-error {
  display: block;
}

.privacy-note {
  font-size: 0.82rem;
  color: var(--color-text-soft);
}

.form-status {
  margin-top: 1rem;
  font-weight: 600;
  min-height: 1.4em;
}

.form-status.is-success {
  color: #1f9d55;
}

.form-status.is-error {
  color: #d64545;
}

/* ---------- Footer ---------- */
.site-footer {
  background: #221b3a;
  color: rgba(255, 255, 255, 0.75);
  padding: 1.6rem 0;
}

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

.footer-inner p {
  margin: 0;
  font-size: 0.9rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(20, 16, 38, 0.55);
  backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-width: 620px;
  width: 100%;
  padding: 2rem;
  position: relative;
  max-height: 85vh;
  overflow-y: auto;
}

.modal h2 {
  font-size: 1.5rem;
  padding-right: 2rem;
}

.modal-close {
  position: absolute;
  top: 0.9rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text-soft);
}

.modal-close:hover {
  color: var(--color-text);
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .subject-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .split,
  .contact-wrap {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow);
    padding: 1rem 1.25rem 1.5rem;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .main-nav.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0.4rem;
  }

  .main-nav a {
    display: block;
    padding: 0.65rem 0.5rem;
    border-radius: 8px;
  }

  .main-nav a:hover {
    background: rgba(107, 77, 230, 0.08);
  }
}

@media (max-width: 620px) {
  .card-grid,
  .subject-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    gap: 1rem 1.5rem;
  }
}