/* ==========================================================
   Das Wachstumsrezept – Konzept A · Editorial & Premium
   Farben und Schriften direkt aus dem Buchumschlag abgeleitet
   ========================================================== */

@font-face { font-family: "Source Serif"; src: url("fonts/source-serif-4-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Source Serif"; src: url("fonts/source-serif-4-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Source Serif"; src: url("fonts/source-serif-4-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Source Serif"; src: url("fonts/source-serif-4-latin-600-italic.woff2") format("woff2"); font-weight: 600; font-style: italic; font-display: swap; }
@font-face { font-family: "Source Serif"; src: url("fonts/source-serif-4-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Source Sans"; src: url("fonts/source-sans-3-latin-300-normal.woff2") format("woff2"); font-weight: 300; font-display: swap; }
@font-face { font-family: "Source Sans"; src: url("fonts/source-sans-3-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Source Sans"; src: url("fonts/source-sans-3-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --navy: #0a2149;          /* Titel-Blau des Covers */
  --navy-soft: #3a4a66;
  --orange: #d9520f;        /* Dreieck & Untertitel */
  --orange-dark: #b5420a;   /* für Text auf Hell (Kontrast) */
  --lemon: #f6cf33;
  --paper: #fbf8f2;
  --sand: #f3ece0;
  --sand-deep: #e9dfcd;
  --ink: #23262d;
  --muted: #5d6170;
  --line: #ddd3c2;
  --serif: "Source Serif", Georgia, "Times New Roman", serif;
  --sans: "Source Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --wrap: 1180px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.7 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--navy); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { color: var(--orange-dark); }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; border-radius: 2px; }
.sr, .hp { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--navy); color: #fff; padding: .6rem 1rem; z-index: 100; }
.skip:focus { top: 1rem; }

.wrap { width: min(100% - 3rem, var(--wrap)); margin-inline: auto; }
.narrow { max-width: 720px; }

.proto-bar { font-size: .66rem !important; background: var(--navy); color: #e8ecf4; text-align: center; font: 600 .72rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; padding: .55rem 1rem; }

/* ---------- Header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(251,248,242,.88); backdrop-filter: saturate(1.2) blur(10px); -webkit-backdrop-filter: saturate(1.2) blur(10px); border-bottom: 1px solid transparent; transition: border-color .3s; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .65rem; text-decoration: none; color: var(--navy); font: 600 1.02rem/1 var(--serif); letter-spacing: .01em; }
.brand-mark { width: 0; height: 0; border-left: 7px solid transparent; border-right: 7px solid transparent; border-bottom: 12px solid var(--orange); }
.nav { display: flex; gap: 2rem; align-items: center; }
.nav a { color: var(--ink); text-decoration: none; font-size: .93rem; letter-spacing: .02em; position: relative; }
.nav a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 1px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.nav a:not(.nav-cta):hover::after { transform: scaleX(1); }
.nav-cta { border: 1px solid var(--navy); padding: .45rem 1rem; border-radius: 999px; color: var(--navy) !important; }
.nav-cta:hover { background: var(--navy); color: #fff !important; }
.nav-toggle { display: none; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 50px; padding: .8rem 1.6rem; border-radius: 999px; font: 600 .98rem/1.1 var(--sans); letter-spacing: .02em; text-decoration: none; cursor: pointer; border: 1px solid transparent; transition: background .25s, color .25s, border-color .25s, transform .25s var(--ease); }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: #12306a; color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* ---------- Typo ---------- */
.kicker { font: 600 .76rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--orange-dark); margin: 0 0 1.2rem; display: flex; align-items: center; gap: .8rem; }
.kicker::before { content: ""; width: 28px; height: 1px; background: currentColor; }
.h2 { font: 600 clamp(2rem, 1.3rem + 2.6vw, 3.25rem)/1.12 var(--serif); color: var(--navy); margin: 0 0 1.6rem; letter-spacing: -.01em; text-wrap: balance; }
.h3 { font: 600 1.55rem/1.25 var(--serif); color: var(--navy); margin: 0 0 .4rem; }
.section { padding: clamp(5rem, 4rem + 6vw, 9.5rem) 0; position: relative; overflow: hidden; }
.section-head { max-width: 680px; margin-bottom: clamp(2.5rem, 2rem + 3vw, 4.5rem); }
.section-lead { color: var(--muted); font-size: 1.12rem; margin: 0; }
.prose p { margin: 0 0 1.25em; font-size: 1.12rem; line-height: 1.8; }
.dropcap p:first-child::first-letter { float: left; font: 600 4.3rem/.82 var(--serif); color: var(--navy); padding: .35rem .6rem 0 0; }

/* ---------- Hero ---------- */
.hero { padding: clamp(3rem, 2rem + 4vw, 6rem) 0 clamp(4rem, 3rem + 5vw, 8rem); background: radial-gradient(1200px 600px at 78% 40%, #fff 0%, rgba(255,255,255,0) 60%), var(--paper); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(2rem, 1rem + 4vw, 6rem); align-items: center; }
.eyebrow { font: 600 .82rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--navy-soft); margin: 0 0 1.4rem; }
.title { font: 700 clamp(2.15rem, .9rem + 6.4vw, 5.1rem)/.98 var(--serif); color: var(--navy); margin: 0; letter-spacing: -.015em; overflow-wrap: normal; word-break: normal; -webkit-hyphens: manual; hyphens: manual; }
.title-small { display: block; font-size: .42em; letter-spacing: .3em; text-transform: uppercase; margin-bottom: .35em; }
.subtitle { font: italic 600 clamp(1.25rem, 1rem + .8vw, 1.6rem)/1.3 var(--serif); color: var(--orange-dark); margin: 1rem 0 2.2rem; display: flex; align-items: center; gap: 1rem; }
.subtitle::before { content: ""; width: 44px; height: 2px; background: var(--orange); }
.lead-quote { font: 400 clamp(1.35rem, 1.1rem + .9vw, 1.75rem)/1.35 var(--serif); color: var(--ink); margin: 0 0 1rem; max-width: 30ch; }
.hero-intro { color: var(--muted); max-width: 52ch; margin: 0 0 2.2rem; font-size: 1.08rem; }
.actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-bottom: 0; }
.notice { display: inline-flex; align-items: flex-start; gap: .7rem; margin: 0; font-size: .95rem; color: var(--navy-soft); background: var(--sand); border-radius: 10px; padding: .75rem 1.1rem; }
.notice .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); margin-top: .5rem; flex: none; box-shadow: 0 0 0 4px rgba(217,82,15,.15); }

/* 3D-Buch: echtes Cover + echter Buchrücken */
.hero-book { display: flex; justify-content: center; perspective: 1800px; }
.book3d { position: relative; width: min(400px, 74vw); }
.book3d-inner { position: relative; transform-style: preserve-3d; transform: rotateY(26deg) rotateX(2deg) translateX(4%); transition: transform 1.1s var(--ease); }
.hero-book:hover .book3d-inner { transform: rotateY(16deg) rotateX(1deg) translateX(4%); }
.book-front { position: relative; width: 100%; border-radius: 1px 4px 4px 1px; box-shadow: inset 5px 0 8px -4px rgba(0,0,0,.28), 18px 22px 40px -18px rgba(20,24,40,.45); backface-visibility: hidden; }
.book-front::after { content: ""; }
.book-spine { position: absolute; top: 0; left: -10.6%; height: 100%; width: 10.6%; transform-origin: right center; transform: rotateY(-90deg); filter: brightness(.86); }
.book-pages { display: none; position: absolute; top: 1.2%; right: 0; height: 97.6%; width: 10.2%; transform-origin: right center; transform: rotateY(90deg) translateX(0); background: repeating-linear-gradient(90deg, #f4efe5 0 1px, #e3dccd 1px 2px); }
.book-shadow { position: absolute; left: 6%; right: -4%; bottom: -26px; height: 30px; background: radial-gradient(ellipse at center, rgba(20,24,40,.32), rgba(20,24,40,0) 70%); filter: blur(6px); z-index: -1; }
.js .book3d { animation: book-in 1.4s var(--ease) both .15s; }
@keyframes book-in { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

/* ---------- Über das Buch ---------- */
.about { background: #fff; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 3rem 0 0; border-top: 1px solid var(--line); }
.facts div { padding: 1.4rem 0 0; }
.facts dt { font: 600 .74rem/1 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: .6rem; }
.facts dd { margin: 0; font: 600 1.35rem/1.2 var(--serif); color: var(--navy); }
.ornament { position: absolute; width: clamp(160px, 18vw, 280px); opacity: .55; pointer-events: none; }
.ornament-right { right: -2%; bottom: 6%; }
.ornament-left { left: -2%; bottom: 4%; }

/* ---------- Gedanken ---------- */
.thoughts { background: var(--paper); }
.statements { list-style: none; margin: 0; padding: 0; counter-reset: st; }
.statements li { display: grid; grid-template-columns: 160px 1fr; gap: .4rem 3rem; padding: clamp(2rem, 1.5rem + 2vw, 3.2rem) 0; border-top: 1px solid var(--line); }
.statements li:last-child { border-bottom: 1px solid var(--line); }
.st-num { font: 600 .76rem/1.6 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--orange-dark); padding-top: .6rem; }
.statements blockquote { margin: 0; grid-column: 2; }
.statements blockquote p { margin: 0; font: 400 clamp(1.55rem, 1.1rem + 1.7vw, 2.5rem)/1.28 var(--serif); color: var(--navy); letter-spacing: -.005em; text-wrap: balance; max-width: 26ch; }
.statements li:nth-child(even) blockquote p { font-style: italic; }
.st-topic { grid-column: 2; color: var(--muted); font-size: .95rem; }

/* ---------- Blick ins Buch ---------- */
.peek { background: var(--sand); }
.pages { list-style: none; margin: 0 0 clamp(4rem, 3rem + 3vw, 6rem); padding: 0; display: grid; grid-template-columns: repeat(6, 1fr); gap: clamp(.8rem, .5rem + 1.2vw, 1.8rem); }
.pages li { text-align: center; }
.pages a { display: block; background: #fff; padding: 0; box-shadow: 0 1px 2px rgba(20,24,40,.08), 0 12px 30px -12px rgba(20,24,40,.25); transition: transform .45s var(--ease), box-shadow .45s var(--ease); }
.pages a:hover { transform: translateY(-6px) rotate(-.4deg); box-shadow: 0 2px 4px rgba(20,24,40,.08), 0 24px 40px -14px rgba(20,24,40,.3); }
.pages span { display: block; margin-top: .9rem; font-size: .85rem; letter-spacing: .06em; color: var(--muted); }
.toc { background: var(--paper); border-radius: 4px; padding: clamp(2rem, 1.5rem + 2.5vw, 4rem); }
.toc .h3 { margin-bottom: 1.6rem; }
.toc-list { columns: 2; column-gap: 3.5rem; margin: 0 0 2.4rem; padding: 0; list-style: none; counter-reset: ww; }
.toc-list li { counter-increment: ww; break-inside: avoid; padding: .7rem 0 .7rem 2.6rem; position: relative; border-bottom: 1px solid var(--line); font: 600 1.02rem/1.35 var(--serif); color: var(--navy); }
.toc-list li::before { content: counter(ww, decimal-leading-zero); position: absolute; left: 0; top: .82rem; font: 600 .78rem/1 var(--sans); color: var(--orange-dark); letter-spacing: .05em; }
.toc-list em { display: block; font: italic 400 .93rem/1.4 var(--serif); color: var(--muted); }

/* ---------- Autoren ---------- */
.authors { background: #fff; }
.author-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 1rem + 4vw, 5rem); }
.author p { margin: 0 0 1em; color: #3a3d46; }
.author .role { font: 600 .8rem/1.5 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--orange-dark); margin-bottom: 1.3rem; }
.portrait { aspect-ratio: 4 / 5; max-width: 300px; background: linear-gradient(160deg, var(--sand) 0%, var(--sand-deep) 100%); margin-bottom: 1.8rem; display: grid; place-content: center; text-align: center; position: relative; overflow: hidden; }
.portrait span { font: 400 4rem/1 var(--serif); color: var(--navy); opacity: .5; letter-spacing: .08em; }
.portrait small { font: 600 .7rem/1 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-top: 1rem; }

/* ---------- Entstehung ---------- */
.origin { background: var(--paper); }
.open-questions { margin-top: 2.6rem; border: 1px dashed #c9b993; background: #fffdf6; border-radius: 6px; padding: 1.4rem 1.6rem; font-size: .96rem; }
.oq-title { font: 600 .74rem/1 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: #8a6a15; margin: 0 0 .9rem; }
.open-questions ul { margin: 0; padding-left: 1.1rem; color: #4d4a40; }
.open-questions li + li { margin-top: .35rem; }

/* ---------- Vormerken ---------- */
.reserve { background: var(--navy); color: #e9edf5; }
.reserve .h2 { color: #fff; }
.reserve .kicker { color: var(--lemon); }
.reserve-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(2.5rem, 1rem + 5vw, 6rem); align-items: start; }
.reserve-text p { font-size: 1.1rem; line-height: 1.75; color: #d6dceb; }
.reserve .fineprint { font-size: .9rem; color: #aab4cc; }
.reserve-cover { width: 190px; margin-top: 2.5rem; transform: rotate(-3deg); box-shadow: 0 30px 50px -20px rgba(0,0,0,.6); }
.form { background: var(--paper); color: var(--ink); border-radius: 8px; padding: clamp(1.6rem, 1rem + 2.5vw, 3rem); box-shadow: 0 40px 80px -40px rgba(0,0,0,.55); }
.field { margin-bottom: 1.15rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: .4rem; color: var(--navy); }
.opt { font-weight: 400; color: var(--muted); font-size: .82rem; margin-left: .3rem; }
.req { color: var(--orange-dark); }
.field input[type=text], .field input[type=email], .field input[type=number], .field textarea { width: 100%; font: 400 1rem/1.4 var(--sans); color: var(--ink); background: #fff; border: 1px solid #cfc6b5; border-radius: 6px; padding: .78rem .9rem; transition: border-color .2s, box-shadow .2s; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--navy); box-shadow: 0 0 0 3px rgba(10,33,73,.14); }
.field [aria-invalid=true] { border-color: #b3261e; }
.field-qty input { max-width: 120px; }
.field-check { display: grid; grid-template-columns: auto 1fr; gap: .8rem; align-items: start; }
.field-check input { width: 20px; height: 20px; margin-top: .2rem; accent-color: var(--navy); }
.field-check label { font-weight: 400; color: #3a3d46; font-size: .9rem; line-height: 1.55; margin: 0; }
.field-check .field-error { grid-column: 2; }
.field-error { margin: .35rem 0 0; font-size: .86rem; color: #b3261e; min-height: 0; }
.field-error:empty { display: none; }
.form-status { margin: 1rem 0 0; font-size: .96rem; border-radius: 6px; }
.form-status.is-ok { background: #e7f2ea; color: #1f5130; padding: .9rem 1rem; }
.form-status.is-error { background: #fbe9e7; color: #8b1f17; padding: .9rem 1rem; }
.form .fineprint { font-size: .82rem; color: var(--muted); margin: .9rem 0 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--paper); padding: 4.5rem 0 3rem; text-align: center; }
.footer-etna { width: 220px; margin: 0 auto 2rem; opacity: .85; }
.footer-quote { font: italic 400 1.2rem/1.55 var(--serif); color: var(--navy); max-width: 44ch; margin: 0 auto 2.2rem; }
.footer-nav { display: flex; justify-content: center; gap: 2rem; margin-bottom: 1rem; }
.footer-nav a { color: var(--muted); font-size: .9rem; }
.copy { font-size: .85rem; color: var(--muted); margin: 0; }

/* ---------- Lightbox & Dialoge ---------- */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(12,16,28,.9); display: grid; grid-template-columns: 64px 1fr 64px; align-items: center; padding: 2rem 1rem; }
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; text-align: center; }
.lightbox img { max-height: 82vh; width: auto; margin: 0 auto; background: #fff; box-shadow: 0 30px 60px rgba(0,0,0,.5); }
.lb-caption { color: #d8dce6; margin-top: 1rem; font-size: .92rem; }
.lightbox button { background: none; border: 0; color: #fff; font-size: 2.6rem; cursor: pointer; line-height: 1; padding: .5rem; }
.lb-close { position: absolute; top: 1rem; right: 1.2rem; }
.dlg { max-width: 520px; border: 0; border-radius: 10px; padding: 2rem; background: var(--paper); color: var(--ink); box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.dlg::backdrop { background: rgba(12,16,28,.55); }
.dlg h2 { font: 600 1.5rem/1.2 var(--serif); color: var(--navy); margin: 0 0 1rem; }

/* ---------- Einblendung ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .js .book3d { animation: none; }
  .book3d-inner { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-book { order: -1; }
  .book3d { width: min(300px, 64vw); }
  .reserve-grid, .author-grid { grid-template-columns: 1fr; }
  .pages { grid-template-columns: repeat(6, 62%); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 1rem; -webkit-overflow-scrolling: touch; }
  .pages li { scroll-snap-align: start; }
  .reserve-cover { display: none; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-grid; place-items: center; width: 44px; height: 44px; background: none; border: 0; cursor: pointer; }
  .nav-toggle span[aria-hidden] { width: 22px; height: 2px; background: var(--navy); position: relative; box-shadow: 0 -7px 0 var(--navy), 0 7px 0 var(--navy); }
  .nav { position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: .5rem 1.5rem 1.5rem; display: none; }
  .nav.is-open { display: flex; }
  .nav a { padding: .9rem 0; width: 100%; border-bottom: 1px solid var(--line); }
  .nav a::after { display: none; }
  .nav-cta { border: 0 !important; padding: .9rem 0 !important; }
  .statements li { grid-template-columns: 1fr; }
  .statements blockquote, .st-topic { grid-column: 1; }
  .toc-list { columns: 1; }
  .facts { grid-template-columns: 1fr; }
  .facts div { border-bottom: 1px solid var(--line); padding: 1rem 0; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .ornament { opacity: .25; }
  .actions .btn { flex: 1 1 100%; }
  .lightbox { grid-template-columns: 40px 1fr 40px; padding: 1rem .3rem; }
}

/* ---------- Ergänzungen finale Version ---------- */
.portrait img { width: 100%; height: 100%; object-fit: cover; }
.portrait-empty span { opacity: .45; }
.btn-meta { font-weight: 400; opacity: .7; font-size: .85em; }
.copy a { color: inherit; }
.legal { padding: clamp(3rem, 2rem + 4vw, 6rem) 0 clamp(4rem, 3rem + 4vw, 7rem); background: #fff; }
.legal h1 { font: 600 clamp(2.2rem, 1.6rem + 2vw, 3rem)/1.1 var(--serif); color: var(--navy); margin: 0 0 2rem; }
.legal h2 { font: 600 1.4rem/1.3 var(--serif); color: var(--navy); margin: 2.6rem 0 .8rem; }
.legal h3 { font: 600 1.1rem/1.4 var(--sans); color: var(--navy); margin: 1.8rem 0 .5rem; }
.legal p, .legal li { font-size: 1rem; line-height: 1.75; }
.legal address { font-style: normal; line-height: 1.75; }
.todo { background: #fff2b8; color: #5a4600; padding: .05em .35em; border-radius: 3px; font-weight: 600; }
.legal-note { border: 1px dashed #c9b993; background: #fffdf6; border-radius: 6px; padding: 1.1rem 1.4rem; font-size: .94rem; margin-bottom: 2.5rem; }
.back { display: inline-block; margin-top: 3rem; }
.error-page { min-height: 70vh; display: grid; place-items: center; text-align: center; padding: 4rem 0; }
.error-page img { width: 220px; margin: 0 auto 2rem; }
.kicker-center { justify-content: center; }