/* styles.css
   Projekt: Unsichtbares Wasser
   Hinweis: Farben/Abstände kannst du später easy anpassen.
*/

:root{
  --bg: #070a0f;
  --bg2:#0b1220;
  --card:#0e1728;
  --card2:#0b1323;
  --text:#e9eef7;
  --muted:#a8b3c7;
  --line: rgba(255,255,255,0.10);

  --accent:#38bdf8;      /* helles cyan */
  --accent2:#22c55e;     /* grün (für positive Akzente) */

  --radius: 18px;
  --shadow: 0 14px 40px rgba(0,0,0,0.45);

  --container: 1100px;
  --pad: 22px;
}

/* Base */
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(900px 600px at 20% -10%, rgba(56,189,248,0.20), transparent 55%),
              radial-gradient(900px 600px at 90% 30%, rgba(34,197,94,0.12), transparent 60%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  min-height:100vh;
}

a{ color: inherit; text-decoration:none; }
a:hover{ text-decoration: underline; }

.container{
  width: min(var(--container), calc(100% - 2*var(--pad)));
  margin: 0 auto;
}

.section{
  padding: 88px 0;
  position: relative;
}

.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

h1,h2,h3,h4{
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}
h1{ font-size: clamp(2.1rem, 4vw, 3.2rem); }
h2{ font-size: clamp(1.6rem, 2.6vw, 2.3rem); }
h3{ font-size: 1.2rem; }

p{ margin: 0 0 14px; line-height: 1.6; }
.lead{
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 70ch;
}

.muted{ color: var(--muted); }
.highlight{ color: var(--accent); font-weight: 800; }

.number{
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.unit{ opacity:0.9; }
.unitSmall{ color: var(--muted); font-size: 0.9rem; margin-left: 8px; }

.srOnly{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden; clip: rect(0,0,0,0);
  white-space:nowrap; border:0;
}

/* Topbar */
.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(7,10,15,0.55);
  border-bottom: 1px solid var(--line);
}

.topbar__inner{
  width: min(var(--container), calc(100% - 2*var(--pad)));
  margin: 0 auto;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
}

.brand{
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.nav__link{
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--muted);
  border: 1px solid transparent;
}
.nav__link:hover{
  color: var(--text);
  border-color: var(--line);
  text-decoration:none;
  background: rgba(255,255,255,0.03);
}

.topbar__right{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Progress bar */
.progress{
  height: 3px;
  background: rgba(255,255,255,0.05);
}
.progress__bar{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), rgba(56,189,248,0.35));
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
}
.btn:hover{
  background: rgba(255,255,255,0.06);
  text-decoration:none;
}
.btn--primary{
  border-color: rgba(56,189,248,0.40);
  background: linear-gradient(180deg, rgba(56,189,248,0.25), rgba(56,189,248,0.10));
}
.btn--primary:hover{
  background: linear-gradient(180deg, rgba(56,189,248,0.32), rgba(56,189,248,0.14));
}
.btn--ghost{
  background: rgba(255,255,255,0.02);
}

/* HERO */
.hero{
  padding-top: 96px;
}

.hero__grid{
  display:grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 34px;
  align-items: center;
}

.kicker{
  display:inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(56,189,248,0.08);
  border: 1px solid rgba(56,189,248,0.18);
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 14px;
}

.hero__title{
  margin-bottom: 12px;
  line-height: 1.05;
}

.hero__subtitle{
  color: var(--muted);
  max-width: 60ch;
  margin-bottom: 18px;
}

.hero__actions{ display:flex; gap:10px; flex-wrap: wrap; margin-top: 10px; }

.scrollHint{
  margin-top: 18px;
  color: rgba(233,238,247,0.6);
  user-select:none;
}

/* Hero stats */
.hero__stat{
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
}
.hero__statLabel{
  color: var(--muted);
  font-size: 0.95rem;
}
.hero__statLabel--secondary{ margin-top: 10px; }
.hero__statValue{
  font-size: 1.6rem;
  font-weight: 800;
  margin: 4px 0 0;
}
.hero__statValue--big{ font-size: 2.1rem; }

/* Hero visual: glass */
.waterFrame{
  width: min(360px, 100%);
  aspect-ratio: 3/4;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,0.12);
  background: radial-gradient(180px 180px at 40% 10%, rgba(56,189,248,0.16), transparent 60%),
              rgba(255,255,255,0.03);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  margin-left: auto;
}

.waterFrame__water{
  position:absolute;
  left:0; right:0; bottom:0;
  height: 42%;
  background: linear-gradient(180deg, rgba(56,189,248,0.55), rgba(56,189,248,0.18));
  filter: blur(0px);
}
.waterFrame__water::before{
  content:"";
  position:absolute;
  left:-20%;
  top:-26px;
  width: 140%;
  height: 60px;
  background: rgba(255,255,255,0.10);
  border-radius: 999px;
  filter: blur(10px);
  opacity: 0.6;
  animation: wave 6s ease-in-out infinite;
}
.waterFrame__glass{
  position:absolute;
  inset:0;
  pointer-events:none;
  background: radial-gradient(200px 200px at 20% 20%, rgba(255,255,255,0.14), transparent 55%),
              radial-gradient(180px 180px at 80% 40%, rgba(255,255,255,0.08), transparent 60%);
}

@keyframes wave{
  0%{ transform: translateX(-3%) }
  50%{ transform: translateX(3%) }
  100%{ transform: translateX(-3%) }
}

/* Layout helpers */
.grid-2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.grid-4{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

/* Cards & panels */
.cards{ margin-top: 22px; }
.card{
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}
.card__icon{ font-size: 1.6rem; margin-bottom: 8px; }
.card__title{ margin: 0 0 6px; }
.card__value{ margin:0 0 6px; font-weight: 800; color: rgba(233,238,247,0.95); }
.card__text{ margin:0; color: var(--muted); }

.panel{
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  padding: 16px;
}
.list{ margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.list li{ margin: 6px 0; }

/* Callout */
.callout{
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid rgba(56,189,248,0.18);
  background: rgba(56,189,248,0.08);
  color: rgba(233,238,247,0.92);
}

/* Rechner */
.rechner{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  margin-top: 18px;
}

.rechner__fieldset{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(255,255,255,0.02);
}
.rechner__fieldset legend{
  padding: 0 10px;
  color: var(--muted);
  font-weight: 600;
}

.items{
  display:flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.itemRow{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
}
.itemRow__left{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 0;
}
.itemRow__icon{ font-size: 1.3rem; }
.itemRow__name{ font-weight: 800; }
.itemRow__meta{ color: var(--muted); font-size: 0.92rem; }
.itemRow__text{ min-width: 0; }

.itemRow__right{
  display:flex;
  align-items:center;
  justify-content: flex-end;
  gap: 6px;
}

.qty{
  width: 92px;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.25);
  color: var(--text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.qty:focus{ outline: 2px solid rgba(56,189,248,0.35); outline-offset: 2px; }

.rechner__actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.rechner__result h3{ margin-bottom: 10px; }
.resultBox{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  padding: 16px;
}
.resultBox__row{
  display:flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.resultBox__row:last-child{ border-bottom: none; }
.resultBox__label{ color: var(--muted); }
.resultBox__value{ font-weight: 800; }

.tank{
  width: 100%;
  height: 18px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.25);
  overflow:hidden;
}
.tank__fill{
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(56,189,248,0.8), rgba(56,189,248,0.25));
  border-radius: 999px;
  transition: width 600ms ease;
}

/* Quiz */
.quiz{ margin-top: 14px; }
.quiz__questions{
  display:flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}
.qCard{
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
  padding: 16px;
}
.qTitle{
  font-weight: 800;
  margin: 0 0 10px;
}
.answers{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.answer{
  display:flex;
  gap: 10px;
  align-items:flex-start;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.10);
  background: rgba(255,255,255,0.03);
  cursor:pointer;
}
.answer:hover{
  background: rgba(255,255,255,0.06);
}
.answer input{ margin-top: 3px; }

.quiz__actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.quiz__result{
  margin-top: 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(34,197,94,0.20);
  background: rgba(34,197,94,0.10);
  padding: 14px 16px;
}
.quiz__score{
  font-size: 1.4rem;
  font-weight: 800;
  margin: 6px 0 0;
}

/* Austria bars */
.bars{ margin-top: 14px; }
.bar{ margin: 10px 0; }
.bar__label{ color: var(--muted); margin-bottom: 6px; }
.bar__track{
  height: 12px;
  border-radius: 999px;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.10);
  overflow:hidden;
}
.bar__fill{
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(56,189,248,0.75), rgba(56,189,248,0.20));
}

/* Finale flood */
.finale{
  padding: 88px 0;
  overflow:hidden;
}
.finale__inner{
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 80ch;
}
.finale__line{
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  margin-bottom: 8px;
}
.finale__line--strong{
  color: var(--accent);
}
.finale__sub{
  color: var(--muted);
  margin: 12px auto 18px;
  max-width: 70ch;
}

.flood{
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  opacity: 0.65;
}
.flood__water{
  position:absolute;
  left:0; right:0; bottom:-30%;
  height: 60%;
  background: linear-gradient(180deg, rgba(56,189,248,0.35), rgba(56,189,248,0.05));
  filter: blur(0px);
  transform: translateY(0);
}
.flood__water::before{
  content:"";
  position:absolute;
  left:-10%;
  top:-35px;
  width: 120%;
  height: 80px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  filter: blur(14px);
  animation: wave 7s ease-in-out infinite;
}

/* Footer */
.footer{
  border-top: 1px solid var(--line);
  padding: 40px 0 18px;
  background: rgba(0,0,0,0.15);
}
.footer__grid{
  display:grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 16px;
  align-items: start;
}
.footer__title{ margin-bottom: 6px; }
.footer__heading{ color: var(--muted); margin-bottom: 8px; }
.footer__links{
  list-style:none;
  padding:0;
  margin:0;
  display:flex;
  flex-direction: column;
  gap: 8px;
}
.footer__links a{
  color: var(--muted);
}
.footer__links a:hover{ color: var(--text); text-decoration:none; }

.footer__bottom{
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,0.06);
  text-align: center;
}

/* Responsive */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .waterFrame{ margin: 16px auto 0; }
  .rechner{ grid-template-columns: 1fr; }
  .grid-4{ grid-template-columns: repeat(2, 1fr); }
  .footer__grid{ grid-template-columns: 1fr; }
}

@media (max-width: 640px){
  .section{ padding: 72px 0; }
  .nav{ display:none; } /* auf klein ausblenden, bleibt simple */
  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .grid-4{ grid-template-columns: 1fr; }
  .answers{ grid-template-columns: 1fr; }
  .qty{ width: 84px; }
}