/* Tappicon.com — static landing */

:root {
  --bg: #f8fafb;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --brand: #0b3d4a;
  --brand-light: #145a6b;
  --accent: #0ea5a4;
  --accent-hover: #0d9488;
  --product: #065f46;
  --product-soft: #ecfdf5;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 1px 3px rgb(15 23 42 / 6%), 0 8px 24px rgb(15 23 42 / 6%);
  --max: 1120px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--brand-light);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--brand);
  color: #fff;
  text-decoration: none;
  border-radius: 0 0 var(--radius) 0;
}

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

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(248 250 251 / 92%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--brand);
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9375rem;
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
}

.header-nav a:hover {
  color: var(--text);
  background: var(--surface);
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface);
}

.lang-toggle button {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  cursor: pointer;
  min-width: 2.5rem;
}

.lang-toggle button[aria-pressed="true"] {
  background: var(--brand);
  color: #fff;
}

.lang-toggle button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Hero */

.hero {
  padding: 4rem 0 3rem;
}

.hero-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--brand-light);
  background: rgb(14 165 164 / 10%);
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin: 0 0 1.5rem;
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 38rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8125rem 1.25rem;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

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

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

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--brand-light);
  color: var(--brand);
}

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

.btn-product:hover {
  background: #047857;
  color: #fff;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-card li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.625rem;
  color: var(--text-muted);
}

.hero-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
}

/* Sections */

.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--surface);
  border-block: 1px solid var(--border);
}

.section-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 2rem;
  color: var(--text-muted);
  max-width: 42rem;
  font-size: 1.0625rem;
}

.cards {
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}

.section-alt .card {
  background: var(--bg);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Fakturista product block */

.product-block {
  background: linear-gradient(160deg, var(--product-soft) 0%, var(--surface) 55%);
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow);
}

.product-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.product-name {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.03em;
  color: var(--product);
}

.product-tagline {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 1.0625rem;
}

.free-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: #059669;
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  white-space: nowrap;
}

.feature-grid {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.feature-grid li {
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  color: var(--text);
  font-size: 0.9375rem;
}

.feature-grid svg {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--product);
}

.product-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.product-note {
  margin: 1.25rem 0 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* History */

.history-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.history-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Contact / Impressum */

.contact-grid {
  display: grid;
  gap: 1.5rem;
}

.contact-block h3 {
  margin: 0 0 0.75rem;
  font-size: 1.0625rem;
}

.contact-block address {
  font-style: normal;
  color: var(--text-muted);
  line-height: 1.7;
}

.contact-block a {
  word-break: break-all;
}

/* Footer */

.site-footer {
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-legal {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-size: 0.875rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--brand);
}

/* Responsive */

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}