/* Nano Invoice — style.css
   Basis: DAIOS Graphite Signal | Mobile-First | Single-File
   Akzentfarben: App-Blau #4B7BE5 + Blitz-Gelb #F5C518
*/

:root{
  --bg: #121316;
  --surface: #1A1C21;
  --surface-2: #16181d;
  --border: #2A2E37;
  --text: #F2F4F8;
  --muted: #A6ACB8;
  --muted-2: #8E95A3;
  --accent: #2563EB;
  --accent-yellow: #F5C518;

  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(0,0,0,.28);

  --max: 1120px;
  --gap: 22px;
  --gap-sm: 14px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;

  --h1: clamp(1.7rem, 2.6vw, 1.75rem);
  --h2: clamp(1.25rem, 1.8vw, 1.55rem);
  --h3: 1.05rem;
  --p: 1rem;

  --lh: 1.6;
}

*{ box-sizing:border-box; }
html{ height:100%; overflow-x: hidden; width: 100%; }
body{ height:100%; overflow-x: hidden; width: 100%; max-width: 100%; }

body{
  margin:0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: var(--lh);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
}

body::before{
  content:"";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(1400px 900px at 35% 0%, rgba(75,123,229,.08), transparent 70%);
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration: underline; text-decoration-color: rgba(242,244,248,.35); }
p{ font-size: var(--p); color: var(--text); margin: 0 0 12px; }
small, .muted{ color: var(--muted); }
hr{ border:none; border-top: 1px solid var(--border); margin: 18px 0; }

.container{
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 16px 44px;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:auto;
  width:1px;height:1px;
  overflow:hidden;
}
.skip-link:focus{
  position:static;
  width:auto;height:auto;
  padding:10px 12px;
  background: var(--surface);
  border:1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* Header */
.site-header{
  position: sticky;
  top:0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(18,19,22,.75);
  border-bottom: 1px solid rgba(42,46,55,.8);
}

.header-inner{
  max-width: var(--max);
  margin: 0 auto;
  padding: 12px 16px;
  display:flex;
  align-items:center;
  justify-content: flex-start;
  gap: 14px;
  position: relative;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
}
.brand img{
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: block;
}
.brand-name{
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .01em;
}
.brand-name span{
  color: #60A5FA;
}

/* Nav */
.nav{
  margin-left: auto;
  display:flex;
  align-items:center;
  gap: 10px;
}
.nav a{
  font-size: .95rem;
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 10px;
}
.nav a[aria-current="page"]{
  color: var(--text);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(75,123,229,0.4);
  text-decoration: none;
}
.nav a:hover{
  color: var(--text);
  text-decoration: none;
  background: rgba(255,255,255,.04);
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  cursor:pointer;
  font-size: .9rem;
}

/* Layout */
.main{ padding-top: 18px; }

.grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.content, .sidebar{
  min-width: 0;
  max-width: 100%;
}

.panel{
  background: rgba(26,28,33,.85);
  border: 1px solid rgba(42,46,55,.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}

.panel .panel-inner{ padding: 18px 18px; }
.sidebar .panel-inner{ padding: 16px; }

.content h1{
  font-size: var(--h1);
  margin: 14px 0 8px;
  letter-spacing: .01em;
  color: #b3d4ff;
}
.content h2{ font-size: var(--h2); margin: 22px 0 10px; }
.content h3{ font-size: var(--h3); margin: 18px 0 8px; }

.lead{
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 14px;
}

/* Hero Image */
.hero-img{
  width: 100%;
  max-width: 100%;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 4px;
}
.hero-img img{
  width: 100%;
  max-width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* Problem → Lösung Cards */
.problem-grid{
  display: grid;
  gap: var(--gap-sm);
  margin: 12px 0;
}

/* Offer Grid */
.offer-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-sm);
  margin-top: 10px;
}
.offer-grid a{ text-decoration:none; }
.offer-grid .card{
  transition: transform .12s ease, background .12s ease;
}
.offer-grid .card:hover{
  transform: translateY(-2px);
  background: rgba(18,19,22,.48);
}

/* Card System */
.card{
  background: linear-gradient(rgba(18,19,22,.6), rgba(18,19,22,.6)),
              linear-gradient(135deg, rgba(75,123,229,.06) 0%, transparent 60%);
  border: 1px solid rgba(42,46,55,.95);
  border-radius: var(--radius-sm);
  padding: 14px;
}
.card h3{ margin-top: 0; }

.card-icon{
  font-size: 1.4rem;
  margin-bottom: 6px;
  display: block;
}

/* Sidebar App-Icon Card */
.app-icon-card{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 14px;
  gap: 10px;
}
.app-icon-card img{
  width: 120px;
  height: 120px;
  border-radius: 24px;
  margin: 0 auto;
}
.app-icon-card .app-title{
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.app-icon-card .app-sub{
  font-size: .88rem;
  color: var(--muted);
  margin: 0;
}

/* Quick Facts */
.fact-list{
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fact-list li{
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .92rem;
  color: var(--muted);
}
.fact-list li::before{
  content: "✓";
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* Buttons */
.btn-row{ display:flex; flex-wrap:wrap; gap:10px; margin:12px 0 12px 0; }
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  border-radius: 12px;
  padding: 11px 16px;
  border: 1px solid rgba(42,46,55,.95);
  background: rgba(255,255,255,.03);
  color: var(--text);
  cursor:pointer;
  font-size: .95rem;
  text-decoration:none;
}
.btn:hover{
  background: rgba(255,255,255,.06);
  text-decoration:none;
}
.btn.primary{
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}
.btn.primary:hover{
  background: #1d4ed8;
  border-color: #1d4ed8;
}
.btn.yt{
  background: rgba(255,0,0,.12);
  border-color: rgba(255,80,80,.25);
  color: #ff6b6b;
}
.btn.yt:hover{
  background: rgba(255,0,0,.18);
}
.btn-full{
  width: 100%;
  margin: 8px 0 0;
}

/* Slider — Portrait (9:16) */
.slider{
  position: relative;
  width: 100%;
  max-width: 100%;
  border-radius: var(--radius-sm);
  overflow:hidden;
  border: 1px solid rgba(42,46,55,.95);
  background: rgba(0,0,0,.4);
  margin: 18px 0 10px;
}
.slider .slides{
  position: relative;
  height: 320px;
}
.slider .slide{
  position:absolute;
  inset:0;
  opacity:0;
  transition: opacity .6s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}
.slider .slide.is-active{ opacity: 1; }
.slider img{
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  margin: 0 auto;
}
.slider .caption{
  position:absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(18,19,22,.80);
  border: 1px solid rgba(42,46,55,.85);
  color: var(--text);
  font-size: .88rem;
}
.slider .dots{
  display:flex;
  justify-content:center;
  gap: 10px;
  padding: 10px 0 0;
}
.slider .dot{
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
  touch-action: manipulation;
}
.slider .dot::before{
  content:"";
  position:absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  transform: translate(-50%,-50%);
  border: 1px solid rgba(42,46,55,.95);
}
.slider .dot.is-active::before{
  background: var(--accent);
  border-color: var(--accent);
}
.slider .dot:focus-visible{
  outline: 2px solid rgba(75,123,229,.6);
  outline-offset: 2px;
  border-radius: 999px;
}

/* FAQ Grid */
.faq-grid{
  display:grid;
  gap:12px;
  margin:16px 0;
}
.faq-card{
  background: linear-gradient(rgba(18,19,22,.55), rgba(18,19,22,.55));
  border:1px solid rgba(42,46,55,.95);
  border-radius:12px;
  overflow:hidden;
}
.faq-card summary{
  padding:12px 14px;
  cursor:pointer;
  list-style:none;
  display:flex;
  gap:10px;
  font-weight:600;
  font-size:.92rem;
  color:#e5e7eb;
}
.faq-card summary::-webkit-details-marker{ display:none; }
.faq-card summary::after{
  content:"+";
  margin-left:auto;
  font-weight:700;
  color: var(--accent);
}
.faq-card[open] summary::after{
  content:"–";
  color: var(--accent-yellow);
}
.faq-body{
  padding:0 14px 12px;
  font-size:.9rem;
  line-height:1.55;
  color:#cbd5f5;
}

/* Utilities */
.list-tight{
  margin: 8px 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--muted);
}
.list-tight li{
  margin: 10px 0;
  padding-left: 22px;
  position: relative;
}
.list-tight li::before{
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.note{
  border-left: 3px solid rgba(75,123,229,.5);
  padding: 10px 12px;
  background: rgba(75,123,229,.06);
  border-radius: 12px;
  color: var(--muted);
}
.badge{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(75,123,229,.12);
  border: 1px solid rgba(75,123,229,.25);
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 10px;
}

/* Footer */
.site-footer{
  margin-top: 40px;
  border-top: 1px solid rgba(42,46,55,.85);
  padding: 22px 0;
  color: var(--muted);
  background: rgba(18,19,22,.90);
}
.footer-row{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
  display:flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items:center;
}
.footer-links{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-links a{ color: var(--muted); }
.footer-links a:hover{ color: var(--text); text-decoration:none; }

/* Responsive Desktop */
@media (min-width: 920px){
  .container{ padding: 22px 16px 52px; }
  .grid{ grid-template-columns: 3fr 2fr; align-items: start; }
  .slider .slides{ height: 400px; }
  .hero-img img{ height: 280px; }
  .problem-grid{ grid-template-columns: 1fr 1fr 1fr; }
  .nav-toggle{ display:none; }
  .app-icon-card img{ width: 160px; height: 160px; }
}

/* Mobile Navigation */
@media (max-width: 920px){
  .nav{ display:none; }
  .nav-toggle{ display:inline-flex; margin-left:auto; }
  .offer-grid{ grid-template-columns: 1fr 1fr; }
  .nav.is-open{
    display:flex;
    position:absolute;
    top: 68px;
    right: 16px;
    left: 16px;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    background: rgba(18,19,22,.95);
    border: 1px solid rgba(42,46,55,.95);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    z-index: 100;
  }
  .nav.is-open a{ padding: 12px 14px; }
}

@media (max-width: 480px){
  .offer-grid{ grid-template-columns: 1fr; }
}

/* Trust Bar */
.trust-bar{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  padding: 10px 0 14px;
}
.trust-bar span{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .88rem;
  color: var(--muted);
  font-weight: 500;
}

/* Nav Share Group — immer horizontal */
.nav-share-group{
  display: flex;
  flex-direction: row;
  gap: 6px;
  align-items: center;
  padding: 4px 0;
}

/* Nav Share Icons */
.nav-share-icon{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  padding: 0;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(42,46,55,.7);
  transition: background .12s;
  text-decoration: none !important;
}
.nav-share-icon:hover{
  background: rgba(255,255,255,.07);
  text-decoration: none !important;
}

/* Share Icon Buttons (Sidebar) */
.share-icon-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 10px;
  border: 1px solid rgba(42,46,55,.9);
  background: rgba(255,255,255,.03);
  cursor: pointer;
  transition: background .12s, transform .1s;
}
.share-icon-btn:hover{
  background: rgba(255,255,255,.07);
  transform: translateY(-1px);
  text-decoration: none;
}

/* Support Section */
.support-section{ margin-top: 8px; }

.support-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap-sm);
  margin: 14px 0;
}

.support-card{
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
}
.support-card:hover{ text-decoration: none; transform: translateY(-2px); }

.share-row{
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.share-btn{
  font-size: .82rem;
  padding: 7px 11px;
  border-radius: 10px;
}

@media (max-width: 600px){
  .support-grid{ grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .slider .slide{ transition:none; }
  .offer-grid .card{ transition:none; }
}