/* ==========================================================================
   Opuvero Check – Stylesheet
   Palette: Blau/Grau-neutral, hoher Kontrast.
   Bedeutung wird nie allein durch Farbe transportiert (Rot-Grün-Schwäche).
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f6f9;
  --color-bg-accent: #e8edf3;
  --color-ink: #1a2230;
  --color-ink-soft: #3d4658;
  --color-muted: #5b6577;
  --color-line: #ccd4e0;
  --color-primary: #1f4e79;
  --color-primary-dark: #163a5a;
  --color-primary-soft: #dce6f1;
  --color-focus: #0b62c4;
  --radius: 8px;
  --radius-sm: 5px;
  --maxw: 980px;
  --space: 1rem;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-text-size-adjust: 100%;
}

h1,
h2,
h3 {
  line-height: 1.25;
  color: var(--color-ink);
  margin-top: 0;
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1rem;
}

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

a:hover {
  color: var(--color-primary-dark);
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
}

/* --------------------------------------------------------------- Header --- */
.site-header {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.brand span {
  color: var(--color-ink-soft);
  font-weight: 400;
}

.header-nav a {
  text-decoration: none;
  color: var(--color-ink-soft);
  font-weight: 600;
  margin-left: 1.1rem;
}

.header-nav a:hover {
  color: var(--color-primary);
}

/* ----------------------------------------------------------------- Hero --- */
.hero {
  background: linear-gradient(180deg, var(--color-bg-accent), var(--color-bg));
  padding: 3.25rem 0 2.75rem;
  border-bottom: 1px solid var(--color-line);
}

.hero h1 {
  max-width: 26ch;
  font-size: 2.25rem;
}

.hero .lead {
  font-size: 1.18rem;
  color: var(--color-ink-soft);
  max-width: 60ch;
}

.anon-highlight {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: #fff;
  border: 2px solid var(--color-primary);
  border-left-width: 6px;
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.75rem 0;
  max-width: 62ch;
}

.anon-highlight .badge {
  font-size: 1.3rem;
  line-height: 1.4;
  flex: 0 0 auto;
}

.anon-highlight p {
  margin: 0;
  font-size: 1.02rem;
}

.anon-highlight strong {
  color: var(--color-primary-dark);
}

/* --------------------------------------------------------------- Buttons --- */
.btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0.8rem 1.6rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

/* -------------------------------------------------------------- Sections --- */
section {
  padding: 2.75rem 0;
}

section.alt {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.section-intro {
  max-width: 64ch;
  color: var(--color-ink-soft);
}

/* Steps */
.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.steps li {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 1.1rem 3.4rem;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 1.05rem;
  width: 1.8rem;
  height: 1.8rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.steps li strong {
  display: block;
  margin-bottom: 0.2rem;
}

/* Generic card grid */
.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  margin-top: 1.5rem;
}

.card {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.25rem;
}

/* Trades list */
.trades {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.6rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.trades li {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  display: flex;
  gap: 0.55rem;
  align-items: baseline;
}

.trades li .sym {
  color: var(--color-primary);
  font-weight: 700;
}

/* Demo legend (symbols + text) */
.legend {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.legend li {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}

.legend .sym {
  font-size: 1.35rem;
  line-height: 1.2;
  flex: 0 0 1.6rem;
  text-align: center;
  color: var(--color-ink);
}

.legend .sym-label {
  font-weight: 700;
  display: block;
}

/* Disclaimer box */
.disclaimer {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-top: 1.75rem;
}

.disclaimer .sym {
  font-size: 1.3rem;
  flex: 0 0 auto;
  color: var(--color-primary-dark);
}

.disclaimer p {
  margin: 0;
  color: var(--color-ink);
}

/* ----------------------------------------------------------------- Form --- */
.form-wrap {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-top: 1.5rem;
  max-width: 720px;
}

.field {
  margin-bottom: 1.25rem;
}

.field > label,
.fieldset-legend {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.req {
  color: var(--color-primary-dark);
  font-weight: 700;
}

.hint {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0.3rem 0 0;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  font: inherit;
  color: var(--color-ink);
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.7rem;
}

input[type="file"] {
  width: 100%;
  font: inherit;
  padding: 0.5rem 0;
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 1px;
  border-color: var(--color-focus);
}

fieldset {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem 1rem;
  margin: 0;
}

fieldset legend {
  font-weight: 600;
  padding: 0 0.4rem;
}

.radio-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 0.4rem;
}

.radio-row label,
.checkbox-row label {
  font-weight: 400;
  display: inline-flex;
  align-items: flex-start;
  gap: 0.5rem;
  cursor: pointer;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.checkbox-row input {
  margin-top: 0.35rem;
}

/* Honeypot – visually and from AT hidden */
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Per-field error text */
.field-error {
  display: none;
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.field.has-error .field-error {
  display: block;
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea,
.field.has-error fieldset {
  border-color: var(--color-primary-dark);
  box-shadow: 0 0 0 1px var(--color-primary-dark);
}

/* Form status message */
.form-status {
  display: none;
  gap: 0.7rem;
  align-items: flex-start;
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  border: 2px solid var(--color-primary);
  background: var(--color-primary-soft);
}

.form-status.is-visible {
  display: flex;
}

.form-status .sym {
  font-size: 1.3rem;
  flex: 0 0 auto;
}

.form-status p {
  margin: 0;
}

/* ---------------------------------------------------------------- FAQ ----- */
.faq {
  margin-top: 1.5rem;
}

.faq details {
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  padding: 0 1.1rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 1rem 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-primary);
  line-height: 1;
}

.faq details[open] summary::after {
  content: "\2013"; /* en dash */
}

.faq details > p {
  margin-top: 0;
  padding-bottom: 1.1rem;
  color: var(--color-ink-soft);
}

/* --------------------------------------------------------------- Footer --- */
.site-footer {
  background: var(--color-ink);
  color: #d6dde7;
  padding: 2rem 0;
  margin-top: 1rem;
}

.site-footer a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

.site-footer a:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: 0.5rem 1rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 0.75rem;
}

.footer-links .sep {
  color: #6b7686;
}

.site-footer .muted {
  color: #9aa6b6;
  font-size: 0.9rem;
  margin: 0;
}

/* --------------------------------------------------- Legal text pages ----- */
.legal {
  padding: 2.5rem 0 3rem;
}

.legal h1 {
  margin-bottom: 0.5rem;
}

.legal h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

.legal h3 {
  margin-top: 1.5rem;
  font-size: 1.05rem;
}

.legal ul {
  padding-left: 1.25rem;
}

.legal li {
  margin-bottom: 0.4rem;
}

.legal .updated {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.placeholder {
  background: var(--color-bg-accent);
  border-radius: 3px;
  padding: 0 0.25rem;
  font-style: normal;
}

/* --------------------------------------------------------------- Mobile --- */
@media (max-width: 640px) {
  html {
    font-size: 16px;
  }

  .hero {
    padding: 2.25rem 0 2rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .header-nav a {
    margin-left: 0;
    margin-right: 1rem;
  }

  .form-wrap {
    padding: 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}