/* E-Rechnung-Teaser — Delta-Plus-Stil (Theme "marine", Akzent #1e477a) */

/* Inter selbst gehostet (kein Google-Fonts-Aufruf → DSGVO-konform).
   Variable Schrift, deckt Weight 400–700 mit einer Datei ab. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304,
    U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --accent: #1e477a;
  --accent-strong: #173a65;
  --accent-bg: #edf2f8;
  --accent-border: #cdd9ea;
  --surface: #ffffff;
  --surface-warm: #f2f4f8;
  --surface-muted: #f8fafc;
  --line: #e2e6ee;
  --bg-from: #dbe5f1;
  --bg-via: #f3f6fa;
  --bg-to: #e7edf5;
  --warn: #c98a2b;
  --warn-strong: #b07d2b;
  --warn-bg: #fbf4e8;
  --danger: #b3261e;
  --danger-bg: #fdecea;
  --ink: #1f2933;
  --ink-soft: #52606d;
  --ink-faint: #9aa5b1;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial,
    sans-serif;
  color: var(--ink);
  background: linear-gradient(135deg, var(--bg-from), var(--bg-via), var(--bg-to));
  background-attachment: fixed;
  line-height: 1.55;
}

a {
  color: var(--accent);
}

.wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Layout: standardmäßig einspaltig zentriert. Die Werbe-Rails sind leere
   Container — erst wenn sie befüllt werden UND der Bildschirm breit genug ist,
   schaltet CSS (:has) auf das 3-Spalten-Raster Werbung | Inhalt | Werbung. */
.layout {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}
.layout > main {
  max-width: 760px;
  margin: 0 auto;
}
.ad-rail {
  display: none;
}
@media (min-width: 1200px) {
  .layout:has(.ad-rail > *) {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr) 190px;
    gap: 30px;
    align-items: start;
  }
  .layout:has(.ad-rail > *) > main {
    max-width: none;
    margin: 0;
  }
  .layout:has(.ad-rail > *) .ad-rail {
    display: block;
    position: sticky;
    top: 20px;
    padding-top: 40px;
  }
}

/* Werbeflächen */
.ad-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin: 0 0 6px;
}
.ad-slot {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 14px;
  margin-bottom: 14px;
}
.ad-slot-tall {
  min-height: 420px;
}
.ad-kicker {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin: 0 0 4px;
}
.ad-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 6px;
}
.ad-body {
  font-size: 12.5px;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.ad-cta {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--accent-border);
  border-radius: 6px;
  padding: 4px 10px;
}
.ad-inline {
  margin-top: 18px;
  text-align: left;
}
.ad-inline .ad-slot {
  margin-bottom: 0;
}
.ad-slot-wide {
  max-width: 520px;
  margin: 0 auto;
}

/* Kontakt-Aufruf im Interstitial (zentriert) */
.dialog-cta {
  max-width: 460px;
  margin: 18px auto 0;
  padding: 18px;
  border: 1px solid var(--accent-border);
  border-radius: 10px;
  background: var(--accent-bg);
  text-align: center;
}
.dialog-cta-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 4px;
}
.dialog-cta-text {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin: 0 0 12px;
}
.dialog-cta .btn {
  justify-content: center;
}
.dialog-cta-phone {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 10px 0 0;
}
.dialog-cta-phone a {
  font-weight: 700;
  white-space: nowrap;
}

/* Prüf-Interstitial mit Werbeeinblendung */
.interstitial {
  text-align: center;
}
.interstitial-title {
  margin: 14px 0 4px;
}
.spinner-lg {
  display: inline-block;
  width: 34px;
  height: 34px;
  border: 3px solid var(--accent-bg);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.ad-progress {
  height: 4px;
  background: var(--accent-bg);
  border-radius: 999px;
  overflow: hidden;
  margin: 16px auto 4px;
  max-width: 520px;
}
.ad-progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  animation-name: adfill;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}
@keyframes adfill {
  from {
    width: 0;
  }
  to {
    width: 100%;
  }
}

/* FAQ */
#faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 12px 14px;
  margin-bottom: 10px;
}
#faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  color: var(--ink);
}
#faq details[open] summary {
  color: var(--accent);
  margin-bottom: 8px;
}
#faq p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* Open-Source-Liste */
.oss-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px;
}
.oss-list li {
  font-size: 13px;
  color: var(--ink-soft);
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.oss-list li:last-child {
  border-bottom: 0;
}

/* Kopf / Fuß */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(242, 244, 248, 0.85);
  backdrop-filter: blur(6px);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.brand .logo {
  width: 40px;
  height: 35px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
.brand strong {
  display: block;
  font-size: 15px;
  color: var(--accent);
}
.brand span {
  display: block;
  font-size: 11px;
  color: var(--ink-faint);
}
.site-header a.ext {
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--line);
  text-align: center;
  padding: 24px 20px;
  color: var(--ink-faint);
  font-size: 11px;
}
.site-footer .mono {
  font-family: ui-monospace, 'SFMono-Regular', Menlo, monospace;
}

main {
  padding: 40px 0 56px;
}

/* Hero */
.hero {
  margin-bottom: 32px;
}
.pill {
  display: inline-block;
  border-radius: 999px;
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.2;
  margin: 0 0 12px;
}
.hero p {
  max-width: 620px;
  color: var(--ink-soft);
  margin: 0;
}

/* Karten */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  padding: 24px;
}
.card + .card,
.stack > * + * {
  margin-top: 16px;
}
.section {
  margin-top: 40px;
}
.section > h2 {
  font-family: Georgia, serif;
  font-size: 1.3rem;
  margin: 0 0 16px;
}

/* Dropzone */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  border: 2px dashed var(--accent-border);
  transition: background 0.15s, border-color 0.15s;
}
.dropzone.drag {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.dropzone .hint {
  font-size: 12px;
  color: var(--ink-faint);
}
.dropzone .privacy {
  font-size: 11px;
  color: var(--ink-faint);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 9px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-strong);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: default;
}
.btn-secondary {
  background: #fff;
  border-color: var(--line);
  color: var(--ink-soft);
}
.btn-secondary:hover {
  background: var(--surface-muted);
}

/* Badges / Urteile */
.tag {
  display: inline-block;
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
}
.tag-accent {
  background: var(--accent-bg);
  color: var(--accent);
}
.tag-ok {
  background: var(--accent-bg);
  color: var(--accent);
}
.tag-bad {
  background: var(--danger-bg);
  color: var(--danger);
}
.tag-warn {
  background: var(--warn-bg);
  color: var(--warn-strong);
}
.tag-muted {
  background: var(--surface-muted);
  color: var(--ink-soft);
}

.result-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.result-head .filename {
  font-size: 12px;
  color: var(--ink-faint);
}
.result-head .verdicts {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Tabs */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  border-bottom: 1px solid var(--line);
  margin: 16px 0;
}
.tabs button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-faint);
  cursor: pointer;
}
.tabs button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Rechnungsbild */
.grid2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px 24px;
}
@media (min-width: 560px) {
  .grid2 {
    grid-template-columns: 1fr 1fr;
  }
}
.field label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}
.field .v {
  font-size: 14px;
}
.field .v.mono {
  font-family: ui-monospace, Menlo, monospace;
}

table.lines {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
}
table.lines th,
table.lines td {
  text-align: left;
  padding: 10px 12px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}
table.lines th {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}
table.lines .num {
  text-align: right;
  white-space: nowrap;
}
.totals {
  margin: 18px 0 0 auto;
  max-width: 280px;
  font-size: 14px;
}
.totals .row {
  display: flex;
  justify-content: space-between;
  color: var(--ink-soft);
  padding: 2px 0;
}
.totals .row.sum {
  border-top: 1px solid var(--line);
  margin-top: 4px;
  padding-top: 6px;
  font-weight: 700;
  color: var(--accent);
}

/* Prüfbericht */
.counts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
}
.msg {
  border-left: 4px solid var(--accent-border);
  border-radius: 0 8px 8px 0;
  padding: 8px 12px;
  background: var(--surface-muted);
}
.msg + .msg {
  margin-top: 8px;
}
.msg.err {
  border-left-color: var(--danger);
  background: #fdeceacc;
}
.msg.warn {
  border-left-color: var(--warn);
  background: var(--warn-bg);
}
.msg .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.msg .lvl {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.msg .rule {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 10px;
  background: #fff;
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--ink-soft);
}
.msg .txt {
  font-size: 14px;
  margin: 4px 0 0;
}
.msg .loc {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 10px;
  color: var(--ink-faint);
  margin: 4px 0 0;
  word-break: break-all;
}

.note {
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
}
.note-warn {
  background: var(--warn-bg);
  color: var(--warn-strong);
}
.note-ok {
  color: var(--accent);
  font-size: 14px;
}
.subtle {
  font-size: 11px;
  color: var(--ink-faint);
}
h3.blk {
  font-size: 14px;
  margin: 0 0 8px;
}

iframe.report {
  width: 100%;
  height: 70vh;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
pre.raw {
  max-height: 70vh;
  overflow: auto;
  background: var(--surface-muted);
  border-radius: 8px;
  padding: 12px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-soft);
  white-space: pre-wrap;
  word-break: break-word;
}

/* Feature-Kacheln */
.features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
  }
}
.tile {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
}
.tile h3 {
  font-size: 14px;
  color: var(--accent);
  margin: 0 0 6px;
}
.tile p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
}

/* Vorschau: zwei Spalten – links HS REV, rechts unser Programm */
.preview-lead {
  color: var(--ink-soft);
  max-width: 720px;
}
.preview-cols {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}
@media (min-width: 740px) {
  .preview-cols {
    grid-template-columns: 1fr 1fr;
  }
}
.preview-col {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
}
.preview-col-own {
  border-color: var(--accent-border);
  background: var(--accent-bg);
}
.preview-kicker {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin: 0 0 6px;
}
.preview-col h3 {
  font-size: 16px;
  margin: 0 0 8px;
  color: var(--accent);
}
.preview-col > p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.preview-col ul {
  margin: 0 0 16px;
  padding-left: 18px;
}
.preview-col li {
  font-size: 13.5px;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.preview-col .btn {
  margin-top: auto;
  justify-content: center;
  text-align: center;
  line-height: 1.3;
}
.preview-src {
  font-size: 11px;
  color: var(--ink-faint);
  margin: 10px 0 0 !important;
}

.spinner {
  display: inline-block;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.disclaimer {
  margin-top: 16px;
  padding: 12px 14px;
  border: 1px solid var(--warn-border, #e7d6b8);
  background: var(--warn-bg);
  border-radius: 8px;
  font-size: 11.5px;
  line-height: 1.55;
  color: var(--warn-strong);
}
.disclaimer strong {
  color: var(--warn-strong);
}

.result-disclaimer {
  font-size: 11px;
  color: var(--ink-faint);
  margin: 2px 0 0;
}

.error-box {
  background: var(--danger-bg);
  color: var(--danger);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 500;
}
.hidden {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}