/* UTF-8 */
/* Farbiger "Space/Neon" Look + gute Lesbarkeit */

:root{
  --bg: #070815;
  --bg2:#0b1030;

  --text:#eef1ff;
  --muted:#b7bfe6;

  --card: rgba(18, 26, 70, .58);
  --border: rgba(120, 140, 255, .25);

  --accent: #66d1ff;     /* cyan */
  --accent2:#9b6bff;     /* violet */
  --accent3:#ff4fd8;     /* pink */

  --shadow: 0 18px 45px rgba(0,0,0,.45);
  --radius: 16px;
  --radius2: 22px;

  --headerH: 86px;
  --barH: 44px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 650px at 15% 10%, rgba(155,107,255,.25), transparent 55%),
    radial-gradient(850px 620px at 85% 15%, rgba(102,209,255,.22), transparent 55%),
    radial-gradient(1000px 700px at 50% 100%, rgba(255,79,216,.14), transparent 60%),
    radial-gradient(1200px 900px at 40% 0%, rgba(25,45,140,.35), transparent 60%),
    linear-gradient(180deg, var(--bg2), var(--bg)) fixed;
}

.header{
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(10,16,35,.92), rgba(10,16,35,.78));
  border-bottom: 1px solid rgba(120, 140, 255, .22);
}

.header__inner{
  height: var(--headerH);
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  max-width: 1200px;
  margin: 0 auto;
}

.brand{
  display:flex;
  align-items:center;
  gap: 14px;
  text-decoration:none;
  color: inherit;
  min-width: 220px;
}

.brand__logo{
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: contain;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.06);
  box-shadow: 0 0 0 3px rgba(102,209,255,.10), 0 10px 25px rgba(0,0,0,.35);
}

.brand__title{
  font-weight: 900;
  letter-spacing: .3px;
}
.brand__subtitle{
  font-size: 12px;
  color: var(--muted);
}

.header__actions{
  display:flex;
  align-items:center;
  gap: 10px;
}

.btn{
  border: 1px solid rgba(255,255,255,.12);
  background: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.05));
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  cursor:pointer;
  box-shadow: 0 10px 22px rgba(0,0,0,.25);
}
.btn:hover{
  border-color: rgba(102,209,255,.65);
  box-shadow: 0 0 0 3px rgba(102,209,255,.15), 0 14px 30px rgba(0,0,0,.35);
}
.btn--ghost{
  width: 44px;
  height: 44px;
  display:grid;
  place-items:center;
}

.search{
  display:flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  min-width: 320px;
}
.search input{
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
}
.search__icon{ opacity:.85; }

.header__bar{
  height: var(--barH);
  border-top: 1px solid rgba(120, 140, 255, .16);
  background: rgba(15,23,48,.55);
}
.header__barInner{
  height: 100%;
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 0 18px;
  max-width: 1200px;
  margin: 0 auto;
  overflow-x:auto;
}

.pill{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(16,26,56,.55);
  padding: 6px 10px;
  border-radius: 999px;
  white-space: nowrap;
  color: var(--muted);
}
.pill code{
  color: var(--text);
  font-weight: 800;
}

.layout{
  display:flex;
  gap: 18px;
  max-width: 1200px;
  margin: 18px auto 60px;
  padding: 0 18px;
}

.sidebar{
  width: 280px;
  flex: 0 0 280px;
  position: sticky;
  top: calc(var(--headerH) + var(--barH) + 18px);
  height: calc(100vh - (var(--headerH) + var(--barH) + 36px));
  overflow:auto;
  border: 1px solid rgba(120, 140, 255, .22);
  background: rgba(16,26,56,.50);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 14px;
}

.nav__section{ margin-bottom: 14px; }
.nav__title{
  font-weight: 900;
  font-size: 12px;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: rgba(183,191,230,.95);
  margin: 8px 8px 10px;
}
.nav__link{
  display:block;
  padding: 10px 10px;
  margin: 4px 0;
  border-radius: 12px;
  text-decoration:none;
  color: var(--text);
  border: 1px solid transparent;
}
.nav__link:hover{
  background: linear-gradient(90deg, rgba(102,209,255,.16), rgba(155,107,255,.10));
  border-color: rgba(102,209,255,.28);
}

.sidebar__footer{
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 14px;
  padding-top: 12px;
  color: var(--muted);
}

.content{
  flex: 1 1 auto;
  min-width: 0;
}

.hero{
  border: 1px solid rgba(120, 140, 255, .22);
  background: linear-gradient(135deg, rgba(102,209,255,.12), rgba(155,107,255,.12), rgba(255,79,216,.08));
  border-radius: var(--radius2);
  padding: 18px 18px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:-2px;
  background: radial-gradient(600px 280px at 25% 15%, rgba(102,209,255,.25), transparent 60%),
              radial-gradient(520px 260px at 70% 40%, rgba(155,107,255,.18), transparent 60%);
  filter: blur(18px);
  opacity:.7;
  pointer-events:none;
}
.hero h1{
  margin: 0 0 8px;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p{ margin: 0 0 14px; color: var(--muted); position:relative; }

.cards{
  display:grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0,1fr));
  position: relative;
}

.card, .panel{
  background: var(--card);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  padding: 14px;
  position: relative;
  overflow: hidden;
}
.card::before, .panel::before{
  content:"";
  position:absolute;
  inset:-2px;
  background: linear-gradient(120deg,
    rgba(102,209,255,.24),
    rgba(155,107,255,.18),
    rgba(255,79,216,.12),
    transparent 60%);
  filter: blur(16px);
  opacity:.55;
  pointer-events:none;
}
.card h3, .panel h3{ margin-top: 0; }
.card p{ margin:0; color: var(--muted); position:relative; }

.section{
  margin-top: 18px;
  border: 1px solid rgba(120, 140, 255, .22);
  background: rgba(16,26,56,.42);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  padding: 16px 16px;
}

.section__header h2{ margin:0; }
.section__header .muted{ margin: 6px 0 0; }

.grid{
  display:grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 12px;
}

.muted{ color: var(--muted); }

.code{
  background: rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 14px;
  padding: 12px;
  overflow:auto;
  position: relative;
}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: .95em;
}

.quote{
  border-left: 3px solid rgba(102,209,255,.65);
  padding: 10px 12px;
  background: rgba(0,0,0,.25);
  border-radius: 12px;
  color: rgba(233,238,255,.94);
}

.note{
  margin-top: 12px;
  padding: 12px 12px 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(102,209,255,.25);
  background: linear-gradient(135deg, rgba(102,209,255,.12), rgba(155,107,255,.10));
  color: rgba(233,238,255,.95);
  box-shadow: 0 10px 24px rgba(0,0,0,.25);
  position: relative;
}

.footer{
  margin-top: 18px;
  padding: 14px 16px;
  color: var(--muted);
  text-align: center;
}

.accordion{
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  overflow:hidden;
  background: rgba(16,26,56,.55);
  margin-top: 10px;
}
.accordion__btn{
  width: 100%;
  text-align:left;
  padding: 12px 14px;
  background: transparent;
  border: none;
  color: var(--text);
  font-weight: 900;
  display:flex;
  align-items:center;
  justify-content: space-between;
  cursor:pointer;
}
.accordion__body{
  display:none;
  padding: 0 14px 14px;
  color: var(--muted);
}
.accordion.is-open .accordion__body{ display:block; }
.accordion__chev{ opacity:.85; }

mark{
  background: rgba(255,255,255,.18);
  color: var(--text);
  padding: 0 3px;
  border-radius: 6px;
}

@media (max-width: 1020px){
  .cards{ grid-template-columns: 1fr; }
  .grid{ grid-template-columns: 1fr; }
  .sidebar{
    position: fixed;
    left: 18px;
    right: 18px;
    top: calc(var(--headerH) + var(--barH) + 18px);
    width: auto;
    height: calc(100vh - (var(--headerH) + var(--barH) + 36px));
    transform: translateY(0);
    display:none;
  }
  .sidebar.is-open{ display:block; }
  .search{ min-width: 0; width: 100%; max-width: 420px; }
  .layout{ display:block; }
}

@media (max-width: 520px){
  .brand__text{ display:none; }
  .search{ display:none; }
}