/* =========================================================================
   BIFO Media Solutions — Shared styles for topic sub-pages
   (Software / Verlag / Audio). Baut auf tokens.css auf.
   ========================================================================= */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--text);
  line-height:1.65;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;font-weight:700}
a{color:inherit}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:820px;margin:0 auto;padding:0 24px}

.btn{display:inline-block;padding:14px 26px;border-radius:var(--radius);font-weight:600;
  text-decoration:none;transition:transform .15s,box-shadow .2s;cursor:pointer;border:0}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--primary);color:var(--primary-contrast);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--border)}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}

/* Header */
header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-display);
  font-weight:700;font-size:1.12rem;text-decoration:none;color:inherit}
.brand img{height:32px;width:auto}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{text-decoration:none;font-weight:500;font-size:.95rem;color:var(--text-muted)}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--primary)}
/* Header CTA: fixed deep-teal fill + white text in both themes (theme tokens flipped to a glaring light teal in dark mode) */
.nav-cta{background:var(--teal-700);color:#fff}
.nav-cta:hover{background:var(--teal-600)}
.theme-toggle{background:var(--surface-2);border:1px solid var(--border);color:var(--text);
  width:42px;height:42px;border-radius:50%;cursor:pointer;font-size:1.1rem;display:grid;place-items:center}
@media(max-width:820px){.nav-links a:not(.nav-cta){display:none}}

/* Breadcrumb */
.crumb{padding:18px 0 0}
.crumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;font-size:.85rem;color:var(--text-muted)}
.crumb a{text-decoration:none;color:var(--text-muted)}
.crumb a:hover{color:var(--primary)}
.crumb li+li::before{content:"/";margin-right:8px;opacity:.5}

/* Hero */
.hero{position:relative;overflow:hidden;padding:64px 0 56px}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;
  background:radial-gradient(55% 60% at 15% 0%,color-mix(in srgb,var(--bifo-teal) 15%,transparent),transparent 70%),
             radial-gradient(45% 50% at 90% 20%,color-mix(in srgb,var(--bifo-olive) 12%,transparent),transparent 70%)}
.eyebrow{display:inline-block;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  font-size:.72rem;color:var(--primary);background:var(--surface-2);border:1px solid var(--border);
  padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);margin-bottom:16px;max-width:20ch;
  background:var(--grad-duo);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:clamp(1.05rem,2.2vw,1.22rem);color:var(--text-muted);max-width:60ch;margin-bottom:28px}

/* Sections */
section{padding:64px 0}
.band{background:var(--bg-subtle);border-block:1px solid var(--border)}
.section-head{max-width:64ch;margin:0 auto 44px;text-align:center}
.section-head .eyebrow{margin-bottom:14px}
.section-head h2{font-size:clamp(1.6rem,3.4vw,2.3rem);margin-bottom:12px}
.section-head p{color:var(--text-muted);font-size:1.05rem}
h2.left{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px}
.prose p{color:var(--text-muted);font-size:1.03rem;margin-bottom:16px;max-width:70ch}
.prose strong{color:var(--text)}

/* Cards / grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px;transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.card .ico{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:1.4rem;
  margin-bottom:16px;background:color-mix(in srgb,var(--bifo-teal) 14%,transparent);color:var(--primary)}
.card:nth-child(even) .ico{background:color-mix(in srgb,var(--bifo-olive) 16%,transparent);color:var(--accent)}
.card h3{font-size:1.16rem;margin-bottom:8px}
.card p{color:var(--text-muted);font-size:.96rem}

/* Problem/Lösung */
.vs{display:grid;grid-template-columns:1fr auto 1fr;gap:24px;align-items:stretch}
.vs .col{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px;min-width:0}
.vs .order{border-color:color-mix(in srgb,var(--primary) 45%,var(--border));
  background:color-mix(in srgb,var(--bifo-teal) 6%,var(--surface))}
.vs .col h4{font-family:var(--font-display);font-size:.74rem;letter-spacing:.13em;text-transform:uppercase;
  margin-bottom:12px;color:var(--text-muted)}
.vs .order h4{color:var(--primary)}
.vs ul{list-style:none}
.vs li{padding:8px 0 8px 28px;position:relative;color:var(--text-muted)}
.vs .chaos li::before{content:"\2715";position:absolute;left:0;color:var(--accent);font-weight:700}
.vs .order li::before{content:"\2713";position:absolute;left:0;color:var(--primary);font-weight:700}
.vs .arrow{font-size:2rem;color:var(--primary);align-self:center}
@media(max-width:760px){.vs{grid-template-columns:1fr;gap:14px}.vs .arrow{transform:rotate(90deg);justify-self:center}}

/* Prozess / Schritte */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;counter-reset:step}
.step{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:26px 24px;position:relative}
.step .n{font-family:var(--font-display);font-weight:700;font-size:.78rem;letter-spacing:.16em;
  color:var(--primary);text-transform:uppercase;margin-bottom:8px;display:block}
.step h3{font-size:1.1rem;margin-bottom:6px}
.step p{color:var(--text-muted);font-size:.95rem}

/* Feature-Liste */
.checks{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:10px 26px}
.checks li{padding:8px 0 8px 28px;position:relative;color:var(--text-muted)}
.checks li::before{content:"\2713";position:absolute;left:0;color:var(--primary);font-weight:700}
.checks li b{color:var(--text)}

/* Europe / CTA-Band */
.europe{background:var(--grad-duo);color:#fff;border-radius:var(--radius-lg);padding:52px 40px;text-align:center}
.europe .eyebrow{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.3);color:#fff}
.europe h2{color:#fff;font-size:clamp(1.5rem,3.2vw,2.2rem);margin-bottom:14px}
.europe p{color:rgba(255,255,255,.92);max-width:62ch;margin:0 auto 24px;font-size:1.06rem}
.europe .btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}

/* FAQ */
.faq{max-width:760px;margin:0 auto}
.faq details{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);
  padding:0;margin-bottom:12px;overflow:hidden}
.faq summary{cursor:pointer;padding:18px 22px;font-family:var(--font-display);font-weight:600;
  font-size:1.03rem;list-style:none;display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--primary);font-size:1.3rem;font-weight:700;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 22px 20px;color:var(--text-muted);font-size:.98rem;margin:0}

/* Buch-Showcase (Verlag) */
.pub{display:grid;grid-template-columns:auto 1fr;gap:48px;align-items:center}
.pub .book{aspect-ratio:3/4;width:250px;border-radius:var(--radius);background:var(--grad);
  display:flex;flex-direction:column;justify-content:space-between;padding:24px 22px;color:#fff;
  font-family:var(--font-display);box-shadow:var(--shadow-lg);border:1px solid var(--border)}
.pub .book .series{font-size:2.3rem;font-weight:700;line-height:1}
.pub .book .vol{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;opacity:.85}
.pub .book .title{font-family:var(--font-body);font-size:1.02rem;font-weight:600;line-height:1.3}
.release{display:inline-flex;flex-direction:column;gap:4px;background:var(--surface-2);
  border:1px solid color-mix(in srgb,var(--primary) 35%,var(--border));border-left:4px solid var(--primary);
  border-radius:var(--radius);padding:16px 20px;margin:20px 0}
.release .lbl{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--primary);font-weight:700}
.release .date{font-family:var(--font-display);font-size:1.3rem;font-weight:700;color:var(--text)}
.release .fmt{font-size:.92rem;color:var(--text-muted)}
@media(max-width:760px){.pub{grid-template-columns:1fr;justify-items:start}}

/* Footer */
footer{background:var(--bg-subtle);border-top:1px solid var(--border);padding:56px 0 32px}
.foot-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:28px;margin-bottom:32px}
.foot-grid h4{font-family:var(--font-display);margin-bottom:10px;font-size:1rem}
.foot-grid a,.foot-grid p{color:var(--text-muted);text-decoration:none;font-size:.93rem;display:block;line-height:1.9}
.foot-grid a:hover{color:var(--primary)}
.foot-bar{border-top:1px solid var(--border);padding-top:20px;text-align:center;color:var(--text-muted);font-size:.85rem}