/* better-notes.de – gemeinsamer Stil für Startseite, Anmelden, Übersicht und
   Rechtsseiten: Liquid-Glass-Optik (Stand 31.10.2026). Seiten liegen unter /bn/,
   / zeigt intern auf /bn/index.html (Root-.htaccess). */
:root {
  --grund: #fefdfb;
  --text: #0b1f4d;
  --leise: #5a6478;
  --blau: #1a6ff0;
  --tuerkis: #19c3b0;
  --violett: #8a6cf2;
  --koralle: #f2765a;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--grund); color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI Variable Display", "Segoe UI", Roboto, Arial, sans-serif;
  min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden;
}

/* ── Farbwolken ─────────────────────────────────────────────── */
.wolken { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.wolken i { position: absolute; border-radius: 50%; filter: blur(80px); opacity: .32; animation: treiben 26s ease-in-out infinite alternate; }
.w1 { width: 520px; height: 520px; background: var(--blau);    top: -160px; left: -120px; }
.w2 { width: 460px; height: 460px; background: var(--tuerkis); bottom: -140px; right: -100px; animation-delay: -8s; }
.w3 { width: 380px; height: 380px; background: var(--violett); top: 18%; right: 8%; opacity: .22; animation-delay: -14s; }
.w4 { width: 340px; height: 340px; background: var(--koralle); bottom: 12%; left: 6%; opacity: .2; animation-delay: -20s; }
@keyframes treiben {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(60px, 40px) scale(1.12); }
  100% { transform: translate(-40px, 70px) scale(.95); }
}

/* ── Glas ───────────────────────────────────────────────────── */
.glas {
  background: linear-gradient(135deg, rgba(255,255,255,.62), rgba(255,255,255,.34));
  -webkit-backdrop-filter: blur(22px) saturate(180%);
          backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid rgba(255,255,255,.7);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.9),      /* Lichtkante oben */
    inset 0 -1px 0 rgba(11,31,77,.05),
    0 10px 30px rgba(11,31,77,.08),
    0 2px 6px rgba(11,31,77,.04);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .glas { background: rgba(255,255,255,.9); }
}

/* ── Kopfleiste ─────────────────────────────────────────────── */
.kopf { position: sticky; top: 0; z-index: 10; padding: 14px 16px 0; }
.leiste {
  max-width: 1120px; margin: 0 auto; border-radius: 22px;
  display: flex; align-items: center; justify-content: space-between; padding: 10px 12px 10px 16px;
}
.marke { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.22rem; letter-spacing: -.01em; }
.marke img { width: 34px; height: 34px; transition: transform .5s cubic-bezier(.3,1.6,.5,1); }
.marke:hover img { transform: rotate(-8deg) scale(1.08); }

/* Login-Knopf: getöntes Glas mit Glanzlicht, das beim Überfahren durchläuft */
.knopf {
  position: relative; overflow: hidden; display: inline-block; isolation: isolate;
  color: #fff; text-decoration: none; font-weight: 600; padding: 10px 28px; border-radius: 999px;
  background: linear-gradient(180deg, #3f8bff, var(--blau) 55%, #155fd6);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.55), inset 0 -2px 6px rgba(0,30,90,.25), 0 6px 18px rgba(26,111,240,.35);
  transition: transform .25s cubic-bezier(.3,1.6,.5,1), box-shadow .25s;
}
.knopf::before {               /* Glanzband */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .7s ease;
}
.knopf:hover, .knopf:focus-visible { transform: translateY(-1px) scale(1.04); box-shadow: inset 0 1px 0 rgba(255,255,255,.6), inset 0 -2px 6px rgba(0,30,90,.25), 0 10px 26px rgba(26,111,240,.45); }
.knopf:hover::before, .knopf:focus-visible::before { transform: translateX(120%); }
.knopf:active { transform: scale(.97); }

/* ── Inhalt ─────────────────────────────────────────────────── */
main, .fuss { width: 100%; max-width: 1160px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
main { flex: 1; text-align: center; }
h1 { font-size: clamp(2.1rem, 5.6vw, 4.3rem); line-height: 1.06; letter-spacing: -.035em; margin: 40px 0 12px; font-weight: 800; }
.verlauf {
  background: linear-gradient(90deg, var(--blau), var(--tuerkis), var(--violett), var(--blau));
  background-size: 300% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: schimmern 8s linear infinite;
}
@keyframes schimmern { to { background-position: 300% 0; } }
.unter { color: var(--leise); font-size: clamp(1.02rem, 2vw, 1.4rem); margin: 0 auto; max-width: 760px; }

.buehne { perspective: 1200px; margin-top: 4px; }
.bild {
  display: block; width: auto; height: auto; max-width: min(100%, 900px); margin: 0 auto;
  /* Ganz im Bild: bn.js setzt --platz = Fensterhöhe minus alles darüber */
  max-height: var(--platz, none);
  /* Bildgrund ist transparent (aus kreislauf.png freigestellt) */
  filter: drop-shadow(0 18px 30px rgba(11,31,77,.06));
  animation: schweben 7s ease-in-out infinite;
  transform: rotateX(var(--kx, 0deg)) rotateY(var(--ky, 0deg));
  transition: transform .4s ease-out;
}
@keyframes schweben { 50% { translate: 0 -10px; } }

.punkte { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 1000px; margin: 12px auto 36px; text-align: left; }
.punkt {
  position: relative; border-radius: 22px; padding: 22px 22px 20px; overflow: hidden;
  transition: transform .35s cubic-bezier(.3,1.4,.5,1), box-shadow .35s;
}
.punkt::before {               /* farbige Kuppe oben */
  content: ""; position: absolute; left: 22px; right: 22px; top: 0; height: 3px; border-radius: 0 0 3px 3px;
  background: var(--farbe);
}
.punkt::after {                /* Lichtfleck folgt der Maus (start.js setzt --mx/--my) */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(240px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--farbe) 22%, transparent), transparent 70%);
}
.punkt:hover { transform: translateY(-6px); box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 20px 44px rgba(11,31,77,.12); }
.punkt:hover::after { opacity: 1; }
.punkt h2 { font-size: 1.08rem; margin: 6px 0 6px; letter-spacing: -.01em; }
.punkt p { margin: 0; color: var(--leise); font-size: .96rem; }

.zugang { display: inline-block; margin: 0 0 48px; padding: 12px 22px; border-radius: 999px; color: var(--leise); font-size: .95rem; }
.zugang a { color: var(--blau); font-weight: 600; text-decoration: none; }
.zugang a:hover { text-decoration: underline; }

.fuss { display: flex; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 22px; font-size: .88rem; color: var(--leise); }
.fuss nav { display: flex; gap: 28px; }
.fuss a { color: var(--leise); text-decoration: none; }
.fuss a:hover { color: var(--text); }

/* ── Auftritt ───────────────────────────────────────────────── */
.auf { opacity: 0; transform: translateY(18px); animation: auftauchen .9s cubic-bezier(.2,.8,.2,1) forwards; animation-delay: calc(var(--v) * .14s + .1s); }
@keyframes auftauchen { to { opacity: 1; transform: none; } }
.js .zeigen { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.8,.2,1); }
.js .zeigen.da { opacity: 1; transform: none; }
.punkte .zeigen:nth-child(2) { transition-delay: .1s; }
.punkte .zeigen:nth-child(3) { transition-delay: .2s; }
.punkt.zeigen.da { transition: opacity .8s ease, transform .35s cubic-bezier(.3,1.4,.5,1), box-shadow .35s; }

@media (max-width: 720px) {
  .punkte { grid-template-columns: 1fr; }
  .knopf { padding: 8px 20px; }
  .zugang { border-radius: 18px; }
  .fuss { flex-direction: column-reverse; align-items: center; }
  .wolken i { filter: blur(60px); }
}

/* Startseite auf PC und Tablet: alles in einem Fenster, ohne Scrollen. Die
   Bühne nimmt den Rest der Höhe, das Bild passt sich ein (object-fit). Auf
   schmalen oder sehr niedrigen Fenstern bleibt es beim Scrollen. */
@media (min-width: 721px) and (min-height: 520px) {
  body.start { height: 100vh; height: 100dvh; overflow: hidden; }
  .start main { display: flex; flex-direction: column; align-items: center; min-height: 0; }
  .start h1 { font-size: clamp(1.8rem, min(5.6vw, 7.5vh), 4.3rem); margin: clamp(10px, 3vh, 40px) 0 clamp(4px, 1vh, 12px); }
  .start .unter { font-size: clamp(.98rem, min(2vw, 2.6vh), 1.4rem); }
  .start .buehne { position: relative; flex: 1 1 0; min-height: 120px; width: 100%; margin-top: clamp(4px, 1.5vh, 14px); }
  .start .bild { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; max-height: none; object-fit: contain; }
  .start .punkte { width: 100%; margin: clamp(8px, 1.8vh, 14px) auto clamp(8px, 1.8vh, 16px); gap: 16px; }
  .start .punkt { padding: clamp(12px, 2vh, 22px) 20px clamp(10px, 1.8vh, 20px); }
  .start .punkt h2 { margin: 4px 0; }
  .start .punkt p { font-size: .92rem; line-height: 1.45; }
  .start .zugang { margin: 0 0 clamp(4px, 1vh, 12px); padding: 9px 20px; }
  .start .fuss { padding-top: 8px; padding-bottom: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .auf, .zeigen { opacity: 1; transform: none; }
}

/* ── Textseiten (Impressum, Datenschutz) ────────────────────── */
.textseite main { text-align: left; max-width: 860px; }
.textseite h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin: 36px 0 6px; }
.textseite .stand { color: var(--leise); margin: 0 0 22px; }
.blatt { border-radius: 22px; padding: 22px 26px; margin: 0 0 18px; }
.blatt h2 { font-size: 1.15rem; margin: 0 0 8px; letter-spacing: -.01em; }
.blatt h3 { font-size: 1rem; margin: 16px 0 4px; }
.blatt p, .blatt li { color: #2c3650; font-size: .97rem; }
.blatt p { margin: 0 0 10px; }
.blatt ul { margin: 0 0 10px; padding-left: 20px; }
.blatt a { color: var(--blau); }
.blatt:target { box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 0 0 3px rgba(26,111,240,.35), 0 10px 30px rgba(11,31,77,.08); }
.knopf.leise { background: rgba(255,255,255,.55); color: var(--text); box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 2px 8px rgba(11,31,77,.08); }

/* ── Anmelden ───────────────────────────────────────────────── */
.anmelde-buehne { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 24px; max-width: 1120px; padding-top: 28px; padding-bottom: 28px; }
.anmelde-bild { width: 100%; height: auto; animation: schweben 7s ease-in-out infinite; filter: drop-shadow(0 18px 30px rgba(11,31,77,.06)); }
.auf.anmelde-bild { animation: auftauchen .9s cubic-bezier(.2,.8,.2,1) forwards, schweben 7s ease-in-out 1s infinite; }
.anmelde-karte { text-align: left; border-radius: 28px; padding: 30px 30px 24px; max-width: 420px; width: 100%; justify-self: center; }
.anmelde-logo { width: 52px; height: 52px; display: block; margin-bottom: 10px; }
.anmelde-karte h1 { font-size: 1.8rem; margin: 0 0 4px; letter-spacing: -.02em; }
.anmelde-unter { color: var(--leise); margin: 0 0 18px; font-size: .97rem; }
.anmelde-fehler { background: rgba(242,118,90,.14); color: #a33a22; border: 1px solid rgba(242,118,90,.35); border-radius: 12px; padding: 9px 12px; font-size: .93rem; font-weight: 600; margin: 0 0 14px; }
.anmelde-erfolg { background: rgba(25,195,176,.14); color: #0d6b60; border: 1px solid rgba(25,195,176,.4); border-radius: 12px; padding: 9px 12px; font-size: .93rem; font-weight: 600; margin: 0 0 14px; }
.anmelde-trenner { height: 1px; background: rgba(11,31,77,.1); margin: 18px 0; }
.feld { display: block; margin: 0 0 12px; }
.feld span { display: block; font-size: .85rem; font-weight: 600; color: var(--leise); margin: 0 0 5px 4px; }
.feld input {
  width: 100%; font: inherit; color: var(--text); padding: 12px 14px; border-radius: 14px;
  border: 1px solid rgba(11,31,77,.12); background: rgba(255,255,255,.75);
  box-shadow: inset 0 1px 2px rgba(11,31,77,.06); transition: border-color .2s, box-shadow .2s, background .2s;
}
.feld input:focus { outline: none; background: #fff; border-color: var(--blau); box-shadow: 0 0 0 4px rgba(26,111,240,.18); }

/* Schalter im iOS-Stil für „Dieser Rechner gehört mir“ */
.schalter { display: flex; align-items: center; gap: 12px; margin: 6px 0 18px; cursor: pointer; font-size: .92rem; color: var(--leise); line-height: 1.35; }
.schalter strong { color: var(--text); }
.schalter input { position: absolute; opacity: 0; pointer-events: none; }
.schalter i { flex: none; position: relative; width: 50px; height: 30px; border-radius: 999px; background: rgba(11,31,77,.16); transition: background .25s; box-shadow: inset 0 1px 3px rgba(11,31,77,.15); }
.schalter i::after { content: ""; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; box-shadow: 0 2px 6px rgba(11,31,77,.25); transition: transform .3s cubic-bezier(.3,1.5,.5,1); }
.schalter input:checked + i { background: linear-gradient(90deg, var(--tuerkis), var(--blau)); }
.schalter input:checked + i::after { transform: translateX(20px); }
.schalter input:focus-visible + i { box-shadow: 0 0 0 4px rgba(26,111,240,.25); }

.knopf.breit { display: block; width: 100%; text-align: center; padding: 13px 20px; font-size: 1.02rem; border: 0; cursor: pointer; font-family: inherit; }
.anmelde-hilfe { text-align: center; color: var(--leise); font-size: .88rem; margin: 16px 0 0; }
.anmelde-hilfe a { color: var(--blau); text-decoration: none; font-weight: 600; }

/* ── Übersicht nach dem Anmelden ────────────────────────────── */
.uebersicht main { padding-top: 10px; }
.uebersicht h1 { margin-top: 34px; }
.kacheln { display: grid; grid-template-columns: repeat(2, minmax(0, 340px)); justify-content: center; gap: 28px; margin: 34px auto 30px; }
.kachel {
  --farbe: var(--blau);
  position: relative; overflow: hidden; display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 34px 26px 28px; border-radius: 30px; color: var(--text); text-decoration: none;
  transition: transform .4s cubic-bezier(.3,1.4,.5,1), box-shadow .4s;
}
.kachel::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--farbe) 20%, transparent), transparent 70%);
}
.kachel:hover, .kachel:focus-visible { transform: translateY(-8px) scale(1.015); box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 26px 50px rgba(11,31,77,.14); outline: none; }
.kachel:hover::after, .kachel:focus-visible::after { opacity: 1; }
.kachel img { width: 148px; height: 148px; margin-bottom: 14px; transition: transform .6s cubic-bezier(.3,1.6,.5,1); filter: drop-shadow(0 16px 22px color-mix(in srgb, var(--farbe) 30%, transparent)); }
.kachel:hover img { transform: translateY(-4px) rotate(-3deg) scale(1.06); }
.kachel h2 { font-size: 1.45rem; margin: 0 0 4px; letter-spacing: -.02em; }
.kachel p { margin: 0; color: var(--leise); font-size: .95rem; }
.kachel .pfeil { margin-top: 16px; font-weight: 700; color: var(--farbe); }
.nebenwege { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin: 0 0 44px; }
.nebenwege a { padding: 9px 18px; border-radius: 999px; color: var(--text); text-decoration: none; font-weight: 600; font-size: .93rem; }
.nebenwege a:hover { color: var(--blau); }

@media (max-width: 820px) {
  .anmelde-buehne { grid-template-columns: 1fr; }
  .anmelde-bild { max-width: 360px; margin: 0 auto; order: 2; }
  .kacheln { grid-template-columns: minmax(0, 380px); }
  .kachel img { width: 120px; height: 120px; }
}