/* lernstoffladen.de – Schulheft-Look: Karopapier, roter Heftrand, Königsblau, Bleistiftgelb */
@font-face { font-family: "Bricolage"; src: url("fonts/bricolage.woff2") format("woff2"); font-weight: 500 800; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url("fonts/atkinson-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url("fonts/atkinson-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url("fonts/atkinson-400i.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }

:root {
  --paper: #FBFCFE;
  --grid: #E2EAF4;
  --ink: #1B3FA0;        /* Königsblau wie Füllertinte */
  --ink-dark: #12307E;
  --margin: #E0483E;     /* roter Heftrand */
  --pencil: #F5C542;     /* Bleistiftgelb = kostenlos */
  --graphite: #25303B;
  --muted: #566273;
  --line: #C9D6E8;
  --wood: #B98A5A;
  --cell: 24px;
  --gutter: clamp(16px, 5vw, 72px);
  --display: "Bricolage", "Avenir Next", "Segoe UI", sans-serif;
  --body: "Atkinson", "Verdana", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }

body {
  margin: 0;
  color: var(--graphite);
  font: 400 1.0625rem/1.6 var(--body);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: var(--cell) var(--cell);
}
/* Heftrand */
body::before {
  content: ""; position: fixed; top: 0; bottom: 0; left: calc(var(--gutter) - 22px);
  width: 2px; background: var(--margin); opacity: .55; pointer-events: none; z-index: 0;
}
main, .site-head, .site-foot { position: relative; z-index: 1; }

h1, h2, h3 { font-family: var(--display); color: var(--ink-dark); line-height: 1.12; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.9rem); font-weight: 800; letter-spacing: -.02em; font-variation-settings: "opsz" 96; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -.01em; }
h3 { font-size: 1.3rem; font-weight: 700; }
p { margin: 0 0 1em; max-width: 68ch; }
a { color: var(--ink); text-underline-offset: 3px; }
a:focus-visible, summary:focus-visible, .btn:focus-visible, .buy:focus-visible {
  outline: 3px solid var(--pencil); outline-offset: 3px; border-radius: 6px;
}
img { max-width: 100%; height: auto; display: block; }

.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 10; }
.skip:focus { left: 8px; }

/* Kopf */
.site-head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 18px var(--gutter); background: rgba(251, 252, 254, .92); border-bottom: 2px solid var(--line);
}
.wordmark {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none;
  font: 800 1.55rem/1 var(--display); color: var(--ink-dark); letter-spacing: -.02em;
}
.wordmark .awning {
  width: 34px; height: 26px; border-radius: 4px 4px 0 0;
  background: repeating-linear-gradient(90deg, var(--ink) 0 8.5px, #fff 8.5px 17px);
  -webkit-mask: radial-gradient(circle at 4.25px 100%, transparent 4px, #000 4.5px) 0 0 / 8.5px 100%;
          mask: radial-gradient(circle at 4.25px 100%, transparent 4px, #000 4.5px) 0 0 / 8.5px 100%;
}
.site-head nav { display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-head nav a { color: var(--graphite); text-decoration: none; font-weight: 700; padding: 4px 0; }
.site-head nav a:hover { color: var(--ink); text-decoration: underline; }

section { padding: clamp(48px, 7vw, 96px) var(--gutter); }
.section-lead { color: var(--muted); font-size: 1.15rem; margin-bottom: 2.2rem; }

/* Buttons */
.btn {
  display: inline-block; font: 700 1.05rem/1 var(--body); text-decoration: none;
  padding: 15px 22px; border-radius: 10px; border: 2px solid var(--ink-dark);
}
.btn-free { background: var(--pencil); color: var(--graphite); box-shadow: 3px 3px 0 var(--ink-dark); }
.btn-free:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink-dark); }
.btn-line { background: var(--paper); color: var(--ink-dark); }
.btn-line:hover { background: #fff; }

/* Hero mit Schaufenster */
.hero {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(28px, 5vw, 64px);
  align-items: center; padding-top: clamp(40px, 6vw, 80px);
}
.lead { font-size: 1.25rem; color: var(--graphite); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 1.6rem; }

.window { position: relative; background: #fff; border: 3px solid var(--ink-dark); border-radius: 14px 14px 8px 8px;
  padding: 64px 20px 18px; box-shadow: 8px 8px 0 rgba(27, 63, 160, .14); }
.awning-big {
  position: absolute; left: -10px; right: -10px; top: -14px; height: 58px; border-radius: 10px 10px 0 0;
  background: repeating-linear-gradient(90deg, var(--ink) 0 36px, #fff 36px 72px);
  border: 3px solid var(--ink-dark); border-bottom: none;
  -webkit-mask: radial-gradient(circle at 18px 100%, transparent 17px, #000 18px) 0 0 / 36px 100%;
          mask: radial-gradient(circle at 18px 100%, transparent 17px, #000 18px) 0 0 / 36px 100%;
}
.shelf {
  display: flex; justify-content: center; align-items: flex-end; padding: 18px 8px 0;
  border-bottom: 14px solid var(--wood); min-height: 260px;
}
.shelf img {
  width: 28%; margin: 0 -4.5%; border-radius: 3px; box-shadow: 0 6px 14px rgba(18, 48, 126, .25);
  transform: rotate(calc((var(--i) - 2) * 5deg)) translateY(calc(var(--i) * 0px));
  transform-origin: bottom center; animation: stock .7s cubic-bezier(.2, .8, .3, 1.2) both;
  animation-delay: calc(var(--i) * 90ms);
}
.shelf img:nth-child(3) { z-index: 2; width: 31%; }
.shelf img:nth-child(2), .shelf img:nth-child(4) { z-index: 1; }
@keyframes stock { from { opacity: 0; transform: translateY(40px) rotate(0deg); } }
.window-sign { margin: 14px auto 0; text-align: center; font: 700 1rem/1.3 var(--display); color: var(--ink-dark); }

/* Kostenlos */
.free { background: rgba(245, 197, 66, .13); border-top: 2px dashed var(--pencil); border-bottom: 2px dashed var(--pencil); }
.free-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr 1fr; gap: 28px; align-items: start; }
.free-book { display: grid; grid-template-columns: 140px 1fr; gap: 20px; background: #fff; padding: 22px;
  border: 2px solid var(--ink-dark); border-radius: 12px; box-shadow: 5px 5px 0 var(--pencil); }
.free-book img { border-radius: 3px; box-shadow: 0 4px 10px rgba(0, 0, 0, .15); }
.free-col p { color: var(--muted); font-size: .98rem; }
.file-meta { margin: 8px 0 0; font-size: .88rem; color: var(--muted); }
.dl-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dl-list li { border-bottom: 1px solid var(--line); }
.dl-list a { display: block; padding: 10px 2px; text-decoration: none; }
.dl-list a:hover .dl-title { text-decoration: underline; }
.dl-title { display: block; font-weight: 700; color: var(--ink-dark); }
.dl-meta { display: block; font-size: .88rem; color: var(--muted); }

/* Sortiment */
.fach { padding: 0; margin-top: 2.5rem; }
.fach-title { font-size: 1.5rem; color: var(--margin); border-bottom: 2px solid var(--margin); padding-bottom: 6px; max-width: 360px; }
.product {
  display: grid; grid-template-columns: 220px minmax(0, 1fr) 230px; gap: clamp(20px, 3vw, 40px);
  align-items: center; padding: 30px 0; border-bottom: 1px solid var(--line);
}
.covers { position: relative; height: 270px; }
.covers img { position: absolute; width: 150px; border-radius: 3px; box-shadow: 0 6px 16px rgba(18, 48, 126, .22); }
.c-book { left: 0; top: 0; z-index: 2; transform: rotate(-3deg); }
.c-heft { left: 64px; top: 46px; transform: rotate(4deg); }
.info h3 { font-size: 1.6rem; }
.facts { list-style: none; padding: 0; margin: 0 0 1.1rem; color: var(--muted); font-size: .98rem; }
.facts li { padding-left: 18px; position: relative; }
.facts li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 8px; height: 8px; background: var(--ink); border-radius: 2px; }
.buttons { display: flex; flex-wrap: wrap; gap: 10px; }
.buy {
  display: inline-flex; align-items: baseline; gap: 8px; padding: 11px 15px; border-radius: 9px;
  background: var(--ink); color: #fff; font-weight: 700; text-decoration: none; border: 2px solid var(--ink-dark);
}
.buy:hover { background: var(--ink-dark); }
.buy .price { font-family: var(--display); font-weight: 800; }
.buy.is-free { background: var(--pencil); color: var(--graphite); }
.buy.is-pending { background: #EEF2F8; color: var(--muted); border-color: var(--line); flex-wrap: wrap; cursor: not-allowed; }
.buy .pending { flex-basis: 100%; font-size: .78rem; font-weight: 400; }
.sample-link { display: inline-block; margin-top: 12px; font-weight: 700; }
.peek { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.peek img { border: 1px solid var(--line); border-radius: 3px; background: #fff; }

/* Ablauf */
.steps ol { list-style: none; counter-reset: step; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; padding: 0; margin: 0; }
.steps li { counter-increment: step; background: #fff; border: 2px solid var(--line); border-radius: 12px; padding: 22px; }
.steps li::before {
  content: counter(step); display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 12px;
  border-radius: 50%; background: var(--ink); color: #fff; font: 800 1.2rem/1 var(--display);
}
.steps p { color: var(--muted); margin: 0; }

/* Fragen */
.faq details { max-width: 820px; border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; font: 700 1.15rem/1.4 var(--display); color: var(--ink-dark); padding: 14px 0; list-style-position: outside; }
.faq details p { color: var(--graphite); }

/* Rechtliches */
.legal { max-width: 820px; }
.legal h2 { font-size: 1.3rem; margin-top: 1.6em; }
.todo { background: var(--pencil); padding: 0 4px; border-radius: 3px; }
.todo-note { background: #FFF4D1; border-left: 5px solid var(--pencil); padding: 12px 16px; }

/* Fuß */
.site-foot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 30px var(--gutter);
  border-top: 2px solid var(--line); background: rgba(251, 252, 254, .94); color: var(--muted); }
.site-foot p { margin: 0; }
.site-foot nav { display: flex; gap: 18px; flex-wrap: wrap; }

/* Responsiv */
@media (max-width: 1100px) {
  .free-grid { grid-template-columns: 1fr 1fr; }
  .free-book { grid-column: 1 / -1; }
  .product { grid-template-columns: 200px minmax(0, 1fr); }
  .peek { grid-column: 1 / -1; grid-template-columns: repeat(2, 160px); }
  .steps ol { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  body::before { left: 8px; }
  .hero { grid-template-columns: 1fr; }
  .shelf { min-height: 190px; }
  .free-grid { grid-template-columns: 1fr; }
  .free-book { grid-template-columns: 96px 1fr; }
  .product { grid-template-columns: 1fr; }
  .covers { height: 230px; }
  .steps ol { grid-template-columns: 1fr; }
  .site-head nav { gap: 4px 16px; }
}