.app-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(18,40,58,.97);
  color: #fff;
  backdrop-filter: blur(12px);
}
.header-shell { display: grid; grid-template-columns: auto minmax(0,1fr) auto; gap: 22px; align-items: center; min-height: 74px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 12px; background: var(--accent); color: var(--navy); font-weight: 900; letter-spacing: -.04em; }
.brand strong, .brand small { display: block; }
.brand strong { line-height: 1.05; }
.brand small { color: rgba(255,255,255,.64); font-size: .68rem; }
.primary-nav { display: flex; justify-content: center; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.primary-nav::-webkit-scrollbar { display: none; }
.nav-button { flex: 0 0 auto; border: 0; border-radius: 9px; background: transparent; color: rgba(255,255,255,.7); padding: 9px 11px; font-size: .8rem; font-weight: 800; }
.nav-button:hover, .nav-button.active { background: rgba(255,255,255,.1); color: #fff; }
.header-tools { display: flex; align-items: center; gap: 8px; }
.icon-pill { border-color: rgba(255,255,255,.16); background: rgba(255,255,255,.07); color: #fff; }
.profile-pill { display: flex; align-items: center; gap: 8px; border: 0; border-radius: 12px; background: rgba(255,255,255,.08); color: #fff; padding: 6px 9px 6px 6px; text-align: left; }
.profile-pill strong, .profile-pill small { display: block; line-height: 1.05; }
.profile-pill strong { font-size: .78rem; }
.profile-pill small { color: rgba(255,255,255,.58); font-size: .65rem; }
.avatar { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 50%; background: #dce8ef; color: var(--navy); font-weight: 900; }

.prototype-banner { border-bottom: 1px solid #ead59d; background: #fff4d7; color: #735015; font-size: .78rem; }
.prototype-banner .shell { display: flex; align-items: center; gap: 7px; min-height: 34px; }
.prototype-banner button { margin-left: auto; border: 0; background: transparent; color: inherit; font-size: 1.1rem; }

.app-main { padding-block: 34px 58px; min-height: calc(100vh - 140px); }
.hero-panel {
  display: grid;
  grid-template-columns: minmax(0,1.35fr) minmax(340px,.65fr);
  gap: 30px;
  align-items: center;
  min-height: 340px;
  border-radius: 24px;
  background: radial-gradient(circle at 83% 20%, rgba(233,180,76,.32), transparent 28%), linear-gradient(135deg, #12283a, #244b68);
  color: #fff;
  padding: clamp(28px, 5vw, 62px);
  box-shadow: var(--shadow-strong);
  overflow: hidden;
}
.hero-panel h1 { color: #fff; }
.hero-panel .eyebrow { color: #efc971; }
.hero-copy { max-width: 760px; color: rgba(255,255,255,.76); font-size: 1.05rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-connection-map { position: relative; min-height: 250px; }
.connection-node { position: absolute; display: grid; place-items: center; width: 112px; min-height: 48px; border: 1px solid rgba(255,255,255,.24); border-radius: 16px; background: rgba(255,255,255,.1); color: rgba(255,255,255,.88); padding: 10px; text-align: center; font-size: .78rem; font-weight: 800; box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.connection-node::before { content: ""; position: absolute; width: 90px; height: 1px; background: rgba(255,255,255,.22); transform-origin: left; z-index: -1; }
.main-node { left: 50%; top: 50%; width: 140px; min-height: 66px; transform: translate(-50%,-50%); background: var(--accent); color: var(--navy); border-color: var(--accent); font-size: .9rem; }
.main-node::before { display: none; }
.connection-node:nth-child(2) { left: 2%; top: 7%; }
.connection-node:nth-child(2)::before { left: 100%; top: 50%; transform: rotate(28deg); }
.connection-node:nth-child(3) { right: 2%; top: 5%; }
.connection-node:nth-child(3)::before { right: 100%; top: 50%; transform: rotate(152deg); }
.connection-node:nth-child(4) { left: 0; bottom: 7%; }
.connection-node:nth-child(4)::before { left: 100%; top: 50%; transform: rotate(-28deg); }
.connection-node:nth-child(5) { right: 0; bottom: 8%; }
.connection-node:nth-child(5)::before { right: 100%; top: 50%; transform: rotate(208deg); }
.connection-node:nth-child(6) { left: 50%; top: 0; transform: translateX(-50%); }
.connection-node:nth-child(6)::before { left: 50%; top: 100%; transform: rotate(90deg); width: 60px; }

.stats-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 12px; margin-top: 18px; }
.stat-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); padding: 17px; }
.stat-card span, .stat-card small { display: block; }
.stat-card span { color: var(--muted); font-size: .75rem; font-weight: 800; }
.stat-card strong { display: block; margin: 2px 0; color: var(--navy); font-size: 1.8rem; line-height: 1; }
.stat-card small { font-size: .7rem; }
.dashboard-grid { display: grid; grid-template-columns: minmax(0,1.7fr) minmax(330px,.7fr); gap: 18px; margin-top: 30px; }
.dashboard-side { display: grid; align-content: start; gap: 16px; }

.page-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-bottom: 22px; }
.page-heading > div:first-child { max-width: 900px; }
.page-heading h1 { margin-bottom: 8px; font-size: clamp(2rem,3vw,3rem); }
.page-heading p:last-child { color: var(--muted); }
.page-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }

.toolbar {
  display: grid;
  grid-template-columns: repeat(6,minmax(0,1fr));
  gap: 11px;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.94);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 14px;
}
.toolbar label { display: grid; gap: 5px; }
.toolbar .span-2 { grid-column: span 2; }
.compact-toolbar { grid-template-columns: repeat(5,minmax(0,1fr)); }
.result-strip { display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font-size: .8rem; padding: 4px 3px 10px; }
.card-grid { display: grid; gap: 14px; }
.train-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
.news-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
.product-grid { grid-template-columns: repeat(4,minmax(0,1fr)); }
.idea-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
.content-mode { display: none; }
.content-mode.active { display: block; }

.segmented { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 12px; background: var(--surface); padding: 4px; }
.segmented button { border: 0; border-radius: 8px; background: transparent; color: var(--muted); padding: 8px 13px; font-weight: 800; }
.segmented button.active { background: var(--navy); color: #fff; }

.knowledge-explainer { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-bottom: 16px; }
.knowledge-explainer > div { display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: center; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); padding: 13px; }
.knowledge-explainer strong, .knowledge-explainer small { display: block; }
.knowledge-explainer small { grid-column: 2; font-size: .7rem; }
.step-number { display: grid; place-items: center; grid-row: 1 / 3; width: 31px; height: 31px; border-radius: 50%; background: var(--blue-soft); color: var(--navy); font-weight: 900; }
.quality-summary { min-width: 140px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 14px; text-align: center; box-shadow: var(--shadow); }
.quality-summary strong, .quality-summary span { display: block; }
.quality-summary strong { color: var(--navy); font-size: 1.8rem; line-height: 1; }
.quality-summary span { margin-top: 4px; color: var(--muted); font-size: .72rem; }
.claim-list { display: grid; gap: 10px; }

.idea-overview { display: grid; grid-template-columns: minmax(0,1.5fr) minmax(300px,.7fr); gap: 16px; margin-bottom: 16px; }
.idea-matrix { position: relative; min-height: 270px; border-left: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg,var(--line) 1px,transparent 1px); background-size: 25% 25%; }
.idea-matrix::before { content: "Nutzen →"; position: absolute; right: 0; bottom: -22px; color: var(--muted); font-size: .7rem; }
.idea-matrix::after { content: "Komplexität →"; position: absolute; left: -44px; top: 50%; transform: rotate(-90deg); color: var(--muted); font-size: .7rem; }
.learning-list { margin: 0; padding-left: 20px; color: #425463; }
.learning-list li + li { margin-top: 10px; }

.experience-layout { display: grid; grid-template-columns: minmax(0,1.5fr) minmax(320px,.65fr); gap: 18px; }
.profile-form { display: grid; gap: 22px; }
.form-section { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.form-section:last-child { border-bottom: 0; }
.form-section p { color: var(--muted); font-size: .82rem; }
.choice-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row label { display: grid; gap: 5px; }
.toggle-row { display: flex; align-items: flex-start; gap: 10px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-soft); padding: 12px; }
.toggle-row input { width: auto; margin-top: 3px; }
.toggle-row strong, .toggle-row small { display: block; }
.experience-preview { display: grid; align-content: start; gap: 16px; }
.sticky-panel { position: sticky; top: 108px; }

.app-footer { border-top: 1px solid var(--line); background: #e7eef2; color: var(--muted); font-size: .76rem; }
.app-footer .shell { display: flex; justify-content: space-between; gap: 18px; align-items: center; min-height: 56px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid label { display: grid; gap: 5px; }
.form-grid .span-2 { grid-column: span 2; }
.search-modal { width: min(760px,calc(100% - 28px)); }
.global-search-field { display: grid; gap: 6px; }
.global-search-field input { padding: 14px; font-size: 1rem; }
.global-search-results { display: grid; gap: 8px; max-height: 55vh; overflow: auto; margin-top: 14px; }

@media (max-width: 1180px) {
  .header-shell { grid-template-columns: auto 1fr; }
  .primary-nav { grid-row: 2; grid-column: 1 / -1; justify-content: flex-start; padding-bottom: 8px; }
  .header-tools { justify-self: end; }
  .hero-panel { grid-template-columns: 1fr; }
  .hero-connection-map { display: none; }
  .stats-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .dashboard-grid, .experience-layout { grid-template-columns: 1fr; }
  .train-grid, .news-grid, .idea-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .product-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .toolbar, .compact-toolbar { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .toolbar .span-2 { grid-column: span 2; }
  .sticky-panel { position: static; }
}

@media (max-width: 760px) {
  .header-shell { gap: 8px; }
  .brand small, .profile-pill span:last-child { display: none; }
  .header-tools { gap: 5px; }
  .prototype-banner .shell { padding-block: 6px; align-items: flex-start; }
  .app-main { padding-top: 22px; }
  .hero-panel { padding: 26px 20px; min-height: auto; }
  .stats-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .dashboard-grid { margin-top: 22px; }
  .page-heading { display: grid; }
  .page-actions { justify-content: flex-start; }
  .toolbar, .compact-toolbar { grid-template-columns: 1fr 1fr; }
  .toolbar .span-2 { grid-column: 1 / -1; }
  .train-grid, .news-grid, .product-grid, .idea-grid { grid-template-columns: 1fr; }
  .knowledge-explainer { grid-template-columns: 1fr 1fr; }
  .idea-overview { grid-template-columns: 1fr; }
  .form-row, .form-grid { grid-template-columns: 1fr; }
  .form-grid .span-2 { grid-column: auto; }
  .result-strip { display: grid; }
  .app-footer .shell { padding-block: 12px; }
}


/* v4.1: geführte, ruhigere Informationsarchitektur */
.header-more { position: relative; }
.header-more summary { list-style: none; border: 1px solid rgba(255,255,255,.16); border-radius: 10px; background: rgba(255,255,255,.07); color: #fff; padding: 8px 11px; font-size: .76rem; font-weight: 800; cursor: pointer; }
.header-more summary::-webkit-details-marker { display: none; }
.header-more-menu { position: absolute; right: 0; top: calc(100% + 8px); display: grid; min-width: 190px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-strong); padding: 7px; }
.header-more-menu button { border: 0; border-radius: 8px; background: transparent; color: var(--navy); padding: 10px; text-align: left; font-weight: 800; }
.header-more-menu button:hover { background: var(--surface-soft); }
.welcome-panel { display: flex; justify-content: space-between; align-items: center; gap: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); padding: clamp(24px,4vw,42px); }
.welcome-copy { max-width: 900px; }
.welcome-panel h1 { font-size: clamp(2rem,3.8vw,3.4rem); }
.welcome-text { margin-bottom: 0; max-width: 850px; color: var(--muted); font-size: 1rem; }
.entry-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; margin-top: 18px; }
.entry-card { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: start; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow); padding: 22px; }
.entry-card-primary { border-color: #dfbd70; background: linear-gradient(145deg,#fffdf7,#fbf3df); }
.entry-number { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--blue-soft); color: var(--navy); font-weight: 900; }
.entry-card-primary .entry-number { background: var(--accent); }
.entry-card p:not(.eyebrow) { min-height: 96px; color: var(--muted); }
.guided-dashboard { display: grid; grid-template-columns: minmax(0,1.55fr) minmax(310px,.65fr); gap: 20px; margin-top: 38px; }
.section-intro { margin: 5px 0 0; color: var(--muted); font-size: .86rem; }
.simple-stats { display: grid; gap: 4px; }
.simple-stats > div { display: grid; grid-template-columns: 58px 1fr; align-items: baseline; gap: 10px; border-bottom: 1px solid var(--line); padding: 10px 0; }
.simple-stats > div:last-child { border-bottom: 0; }
.simple-stats strong { color: var(--navy); font-size: 1.35rem; }
.simple-stats span { color: var(--muted); font-size: .8rem; }
.prototype-scope p { color: var(--muted); font-size: .82rem; }
.idea-reading-guide { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin-bottom: 18px; }
.idea-reading-guide > div { border: 1px solid var(--line); border-radius: 13px; background: var(--surface); padding: 13px; }
.idea-reading-guide strong, .idea-reading-guide span { display: block; }
.idea-reading-guide strong { color: var(--navy); }
.idea-reading-guide span { margin-top: 3px; color: var(--muted); font-size: .72rem; }
.idea-list { display: grid; gap: 16px; }
.optional-analysis { margin-top: 20px; }
.optional-analysis > summary { cursor: pointer; color: var(--navy); font-weight: 850; }
.optional-analysis > p { color: var(--muted); font-size: .8rem; }
.train-grid, .news-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }

@media (max-width: 980px) {
  .entry-grid, .guided-dashboard { grid-template-columns: 1fr; }
  .entry-card p:not(.eyebrow) { min-height: auto; }
  .idea-reading-guide { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .welcome-panel { display: grid; }
  .entry-card { grid-template-columns: 1fr; }
  .idea-reading-guide { grid-template-columns: 1fr; }
  .header-more { display: none; }
}