/* ============================================================
   Converia Kongress-Glossar — Stylesheet
   ============================================================ */

:root {
  --color-primary:       #1B3A6B;
  --color-primary-dark:  #122850;
  --color-secondary:     #0090C8;
  --color-accent:        #E8520A;
  --color-accent-hover:  #C94208;
  --color-bg:            #F5F7FA;
  --color-surface:       #FFFFFF;
  --color-text:          #1A1A2E;
  --color-text-muted:    #6B7280;
  --color-border:        #E2E8F0;
  --color-success:       #059669;

  /* Category colors */
  --cat-ticketing:       #2563EB;
  --cat-abstracts:       #7C3AED;
  --cat-sponsoring:      #EA580C;
  --cat-operations:      #D97706;
  --cat-kommunikation:   #059669;
  --cat-daten:           #4B5563;
  --cat-formate:         #DB2777;
  --cat-compliance:      #DC2626;
  --cat-converia:        #92400E;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
}

a { color: var(--color-secondary); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

/* ---- Layout ---- */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header / Nav ---- */
.site-header {
  background: var(--color-primary);
  color: #fff;
  padding: .875rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo img {
  height: 36px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  color: rgba(255,255,255,.85);
  font-size: .9rem;
  font-weight: 500;
}

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

.btn-demo {
  background: var(--color-accent);
  color: #fff !important;
  padding: .5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .875rem;
  transition: background .15s;
  white-space: nowrap;
}
.btn-demo:hover { background: var(--color-accent-hover) !important; text-decoration: none !important; }

/* ---- Hero (index) ---- */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, #1d4ed8 100%);
  color: #fff;
  padding: 4rem 0 3rem;
  text-align: center;
}

.hero__eyebrow {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: .75rem;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -.03em;
}

.hero__lead {
  font-size: 1.125rem;
  color: rgba(255,255,255,.8);
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

/* ---- Search bar ---- */
.search-wrap {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.search-wrap input {
  width: 100%;
  padding: .875rem 1.25rem .875rem 3rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  outline: none;
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

#search-results-count {
  margin-top: .75rem;
  font-size: .875rem;
  color: rgba(255,255,255,.7);
  min-height: 1.25rem;
}

/* ---- Category pills ---- */
.category-nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.category-nav .container {
  display: flex;
  gap: .625rem;
  flex-wrap: wrap;
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: .375rem;
  padding: .375rem .875rem;
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .15s;
  white-space: nowrap;
  background: var(--color-bg);
  color: var(--color-text-muted);
}

.cat-pill:hover,
.cat-pill.active {
  color: #fff;
}

.cat-pill[data-cat="alle"]              { border-color: var(--color-primary); color: var(--color-primary); }
.cat-pill[data-cat="alle"].active       { background: var(--color-primary); color: #fff; }
.cat-pill[data-cat="ticketing"]         { border-color: var(--cat-ticketing); }
.cat-pill[data-cat="ticketing"].active,
.cat-pill[data-cat="ticketing"]:hover   { background: var(--cat-ticketing); color: #fff; border-color: var(--cat-ticketing); }
.cat-pill[data-cat="abstracts"]         { border-color: var(--cat-abstracts); }
.cat-pill[data-cat="abstracts"].active,
.cat-pill[data-cat="abstracts"]:hover   { background: var(--cat-abstracts); color: #fff; border-color: var(--cat-abstracts); }
.cat-pill[data-cat="sponsoring"]        { border-color: var(--cat-sponsoring); }
.cat-pill[data-cat="sponsoring"].active,
.cat-pill[data-cat="sponsoring"]:hover  { background: var(--cat-sponsoring); color: #fff; border-color: var(--cat-sponsoring); }
.cat-pill[data-cat="operations"]        { border-color: var(--cat-operations); }
.cat-pill[data-cat="operations"].active,
.cat-pill[data-cat="operations"]:hover  { background: var(--cat-operations); color: #fff; border-color: var(--cat-operations); }
.cat-pill[data-cat="kommunikation"]     { border-color: var(--cat-kommunikation); }
.cat-pill[data-cat="kommunikation"].active,
.cat-pill[data-cat="kommunikation"]:hover { background: var(--cat-kommunikation); color: #fff; border-color: var(--cat-kommunikation); }
.cat-pill[data-cat="daten"]             { border-color: var(--cat-daten); }
.cat-pill[data-cat="daten"].active,
.cat-pill[data-cat="daten"]:hover       { background: var(--cat-daten); color: #fff; border-color: var(--cat-daten); }
.cat-pill[data-cat="formate"]           { border-color: var(--cat-formate); }
.cat-pill[data-cat="formate"].active,
.cat-pill[data-cat="formate"]:hover     { background: var(--cat-formate); color: #fff; border-color: var(--cat-formate); }
.cat-pill[data-cat="compliance"]        { border-color: var(--cat-compliance); }
.cat-pill[data-cat="compliance"].active,
.cat-pill[data-cat="compliance"]:hover  { background: var(--cat-compliance); color: #fff; border-color: var(--cat-compliance); }

/* ---- Alpha nav ---- */
.alpha-nav {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.alpha-nav .container {
  display: flex;
  flex-wrap: wrap;
  gap: .25rem;
}

.alpha-link {
  width: 2rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: .8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: all .15s;
}

.alpha-link:hover,
.alpha-link.has-terms {
  background: var(--color-bg);
  color: var(--color-primary);
  text-decoration: none;
}

.alpha-link.has-terms:hover {
  background: var(--color-primary);
  color: #fff;
}

.alpha-link.inactive {
  opacity: .35;
  pointer-events: none;
}

/* ---- Main content (index) ---- */
.glossar-main {
  padding: 2.5rem 0 4rem;
}

.glossar-main .container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .glossar-main .container { grid-template-columns: 1fr; }
  .glossar-sidebar { order: -1; }
}

/* ---- Letter groups ---- */
.letter-group {
  margin-bottom: 2.5rem;
}

.letter-group__heading {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: .375rem;
  margin-bottom: 1rem;
  display: inline-block;
  min-width: 2.5rem;
}

.term-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: .875rem;
  list-style: none;
}

.term-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  transition: box-shadow .15s, transform .15s;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.term-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.term-card__name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.term-card__name a {
  color: inherit;
}

.term-card__name a:hover { color: var(--color-secondary); text-decoration: none; }

.term-card__excerpt {
  font-size: .8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ---- Category badge (small) ---- */
.cat-badge {
  display: inline-block;
  padding: .2rem .625rem;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: #fff;
}

.cat-badge--ticketing     { background: var(--cat-ticketing); }
.cat-badge--abstracts     { background: var(--cat-abstracts); }
.cat-badge--sponsoring    { background: var(--cat-sponsoring); }
.cat-badge--operations    { background: var(--cat-operations); }
.cat-badge--kommunikation { background: var(--cat-kommunikation); }
.cat-badge--daten         { background: var(--cat-daten); }
.cat-badge--formate       { background: var(--cat-formate); }
.cat-badge--compliance    { background: var(--cat-compliance); }
.cat-badge--converia      { background: var(--cat-converia); }

/* ---- Sidebar ---- */
.glossar-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 5rem;
}

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.sidebar-card__title {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: .75rem;
}

.sidebar-card__text {
  font-size: .875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: .625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: .875rem;
  text-align: center;
  width: 100%;
  transition: background .15s;
}
.btn-primary:hover { background: var(--color-accent-hover); text-decoration: none; color: #fff; }

.btn-secondary {
  display: inline-block;
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  padding: .5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .875rem;
  text-align: center;
  width: 100%;
  transition: all .15s;
  margin-top: .5rem;
}
.btn-secondary:hover { background: var(--color-primary); color: #fff; text-decoration: none; }

/* ---- No results ---- */
#no-results {
  display: none;
  text-align: center;
  padding: 3rem 0;
  color: var(--color-text-muted);
}

#no-results p { font-size: 1.1rem; }

/* ============================================================
   TERM PAGE (einzelne Begriff-Seite)
   ============================================================ */

.term-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: #fff;
  padding: 2.5rem 0;
}

.breadcrumb {
  font-size: .8125rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 1rem;
  display: flex;
  gap: .375rem;
  align-items: center;
  flex-wrap: wrap;
}

.breadcrumb a { color: rgba(255,255,255,.75); }
.breadcrumb a:hover { color: #fff; text-decoration: none; }
.breadcrumb span { color: rgba(255,255,255,.4); }

.term-hero__category {
  margin-bottom: .75rem;
}

.term-hero__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.03em;
  margin-bottom: .75rem;
}

.term-hero__definition {
  font-size: 1.05rem;
  color: rgba(255,255,255,.85);
  max-width: 720px;
  line-height: 1.65;
}

/* ---- Term content layout ---- */
.term-content-wrap {
  padding: 2.5rem 0 4rem;
}

.term-content-wrap .container {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .term-content-wrap .container { grid-template-columns: 1fr; }
}

.term-article h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2rem 0 .875rem;
  padding-bottom: .375rem;
  border-bottom: 2px solid var(--color-border);
}

.term-article h2:first-child { margin-top: 0; }

.term-article h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.25rem 0 .5rem;
}

.term-article p {
  margin-bottom: .875rem;
  color: var(--color-text);
  line-height: 1.7;
}

.term-article ul, .term-article ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.term-article li {
  margin-bottom: .4rem;
  line-height: 1.6;
}

.term-article ul ul {
  margin-top: .4rem;
  margin-bottom: .25rem;
}

/* ---- Converia-Box im Artikel ---- */
.converia-box {
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
  border: 1px solid #93C5FD;
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

.converia-box__label {
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .5rem;
}

.converia-box__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: .625rem;
}

.converia-box p {
  font-size: .9rem;
  color: #1E40AF;
  margin-bottom: .875rem;
}

.converia-box .btn-primary {
  width: auto;
  display: inline-block;
  margin-right: .5rem;
}

/* ---- Related terms ---- */
.related-terms {
  margin-top: 2rem;
}

.related-terms h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: .625rem;
}

.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: .875rem 1rem;
  transition: box-shadow .15s;
}

.related-card:hover { box-shadow: var(--shadow-sm); text-decoration: none; }

.related-card__term {
  font-weight: 600;
  font-size: .9rem;
  color: var(--color-text);
  margin-bottom: .25rem;
}

.related-card__cat {
  font-size: .75rem;
  color: var(--color-text-muted);
}

/* ---- Term sidebar ---- */
.term-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 5rem;
}

.info-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.info-box__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: .5rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: .875rem;
  gap: .5rem;
}

.info-box__row:last-child { border-bottom: none; }

.info-box__label { color: var(--color-text-muted); min-width: 90px; }
.info-box__value { font-weight: 600; text-align: right; }

/* ---- CTA banner (term page bottom) ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1d4ed8 100%);
  color: #fff;
  padding: 3.5rem 0;
  text-align: center;
  margin-top: 3rem;
}

.cta-banner__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  margin-bottom: .75rem;
  letter-spacing: -.025em;
}

.cta-banner__text {
  font-size: 1rem;
  color: rgba(255,255,255,.8);
  max-width: 540px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.cta-banner__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-banner .btn-primary {
  width: auto;
  font-size: 1rem;
  padding: .75rem 2rem;
}

.btn-ghost {
  display: inline-block;
  background: transparent;
  border: 2px solid rgba(255,255,255,.6);
  color: rgba(255,255,255,.9);
  padding: .75rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  transition: all .15s;
}
.btn-ghost:hover { border-color: #fff; color: #fff; text-decoration: none; background: rgba(255,255,255,.1); }

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,.6);
  padding: 2rem 0;
  font-size: .8125rem;
}

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

.site-footer a { color: rgba(255,255,255,.7); }
.site-footer a:hover { color: #fff; text-decoration: none; }

.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  flex-wrap: wrap;
}

/* ---- Utility ---- */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .site-nav .nav-link { display: none; }
  .hero { padding: 2.5rem 0 2rem; }
  .glossar-main { padding: 1.5rem 0 3rem; }
  .term-content-wrap { padding: 1.5rem 0 3rem; }
}