/* ============================================================
   STATS BANNER
   ============================================================ */
.stats {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 2rem;
  gap: 1.5rem;
}

.stats__item {
  text-align: center;
  padding: 1rem;
}

.stats__number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stats__label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  font-weight: 500;
}

/* ============================================================
   VITA — TIMELINE
   ============================================================ */
.vita {
  background: var(--bg-primary);
}

.timeline {
  position: relative;
  padding-left: 2.5rem;
  max-width: 760px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 2rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent) 0%, rgba(0,180,216,0.1) 100%);
}

.timeline__item {
  position: relative;
  margin-bottom: 2.75rem;
}

.timeline__item:last-child {
  margin-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -40.5px;
  top: 0.4rem;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px rgba(0, 180, 216, 0.6);
  flex-shrink: 0;
}

.timeline__year {
  font-size: 0.8rem;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.timeline__content h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
}

.timeline__org {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin: 0.2rem 0 0.6rem;
}

.timeline__desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ============================================================
   TABS SECTION
   ============================================================ */
.tabs-section {
  background: var(--bg-secondary);
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
  margin-bottom: -1px;
  flex-shrink: 0;
}

.tab-btn:hover {
  color: var(--text-secondary);
}

.tab-btn--active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel--active { display: block; }

/* ============================================================
   KAMPAGNEN-FLOW
   ============================================================ */
.flow-wrap {
  margin-bottom: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 2.5rem;
}

.flow__heading {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.flow__sub {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.flow-steps {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 80px;
}

.flow-step__icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: background var(--transition), border-color var(--transition);
}

.flow-step:hover .flow-step__icon {
  background: rgba(0, 180, 216, 0.25);
  border-color: var(--accent);
}

.flow-step__label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.3;
}

.flow-arrow {
  color: var(--accent);
  font-size: 1.4rem;
  opacity: 0.5;
  flex-shrink: 0;
  line-height: 1;
  margin-bottom: 1.2rem;
}

/* ============================================================
   LEHRE — COURSE CARDS
   ============================================================ */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.courses-grid--two {
  grid-template-columns: repeat(2, 1fr);
  max-width: 760px;
}

.courses-grid--one {
  grid-template-columns: 1fr;
  max-width: 420px;
}

.course-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease;
}

.course-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 4px 30px var(--accent-glow);
  transform: translateY(-3px);
}

.course-card__tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.course-card h3 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.6rem;
}

.course-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.course-card__topics {
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.course-card__topics li {
  font-size: 0.83rem;
  color: var(--text-muted);
  padding-left: 0.9rem;
  position: relative;
}

.course-card__topics li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.7rem;
  top: 0.1rem;
}

/* ============================================================
   FORSCHUNG — RESEARCH CARDS
   ============================================================ */
.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.research-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease;
}

.research-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 4px 30px var(--accent-glow);
  transform: translateY(-3px);
}

.research-card__icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.research-card h3 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.research-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   KOOPERATION
   ============================================================ */
.coop__panel-heading {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

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

.schwerpunkt-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform 0.2s ease;
}

.schwerpunkt-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 40px var(--accent-glow-lg);
  transform: translateY(-4px);
}

.schwerpunkt-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.1rem;
  transition: background var(--transition);
}

.schwerpunkt-card:hover .schwerpunkt-card__icon {
  background: rgba(0, 180, 216, 0.22);
}

.schwerpunkt-card__badge {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  opacity: 0.75;
  margin-bottom: 0.4rem;
}

.schwerpunkt-card h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
}

.schwerpunkt-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}


.coop-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}

.coop-text h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.coop-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.coop-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.coop__formats-heading {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: 1.75rem 0 0.75rem;
}

.coop__formats {
  margin: 1.25rem 0 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.coop__formats li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 1.1rem;
  position: relative;
}

.coop__formats li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.85rem;
}

.coop-focus-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.coop-focus-box h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.focus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.focus-tag {
  display: inline-block;
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid var(--border);
  color: var(--accent);
  border-radius: 20px;
  padding: 0.3rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition);
  cursor: default;
}

.focus-tag:hover {
  background: rgba(0, 180, 216, 0.18);
  border-color: var(--border-hover);
}

/* ============================================================
   KONTAKT
   ============================================================ */
.kontakt {
  background: var(--bg-primary);
}

.kontakt__intro {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.kontakt__cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.kontakt-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition), transform 0.2s ease, box-shadow var(--transition);
  text-decoration: none;
}

.kontakt-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.kontakt-card__icon {
  font-size: 1.8rem;
  margin-bottom: 0.25rem;
  line-height: 1;
}

.kontakt-card__icon--text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--accent);
}

.kontakt-card__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 600;
}

.kontakt-card__value {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
  word-break: break-word;
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-form-wrap {
  max-width: 680px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.contact-form__heading {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.65rem 0.9rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  width: 100%;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem;
}

.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.footer__links a:hover { color: var(--accent); }