:root {
  --white: #fff;
  --off-white: #f5f7fb;
  --light: #e8edf5;
  --mid: #667085;
  --dark: #1d2939;
  --darker: #101828;
  --accent: #0066cc;
  --green: #16a34a;
  --radius: 20px;
  --shadow: 0 10px 30px rgba(16, 24, 40, 0.08);
  --container: 1200px;
  --nav-height: 64px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

body {
  margin: 0;
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--dark);
  background: #fff;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -56px;
  background: #000;
  color: #fff;
  padding: 12px 16px;
  border-radius: 12px;
  z-index: 200;
  text-decoration: none;
}

.skip-link:focus {
  top: 12px;
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.2);
  border-radius: 12px;
}

.max-w {
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid rgba(16, 24, 40, 0.08);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 24px;
}

.nav-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  text-decoration: none;
  letter-spacing: -0.5px;
  white-space: nowrap;
}

.nav-logo span {
  color: var(--accent);
}

.nav-links-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.94rem;
  opacity: 0.85;
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  opacity: 1;
  color: var(--accent);
}

.nav-cta,
.btn-primary,
.btn-secondary,
.btn-card,
.btn-submit {
  min-height: 44px;
  min-width: 44px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nav-cta,
.btn-primary,
.btn-card,
.btn-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 18px;
  cursor: pointer;
}

.btn-secondary {
  background: #fff;
  color: var(--dark);
  border: 1.5px solid var(--light);
  padding: 12px 18px;
}

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

.nav-cta:hover,
.btn-primary:hover,
.btn-card:hover,
.btn-submit:hover {
  background: #0057b3;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--light);
  background: #fff;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 24px 72px;
  background: var(--off-white);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(0, 102, 204, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 35% at 85% 85%, rgba(14, 165, 233, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.page-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #e8f0fb;
  color: var(--accent);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 22px;
}

.breadcrumbs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--mid);
  font-size: 0.86rem;
  margin-bottom: 14px;
}

h1 {
  margin: 0 0 16px;
  font-family: 'DM Serif Display', serif;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 1.07;
  letter-spacing: -1.6px;
  color: var(--darker);
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.15rem);
  max-width: 760px;
  margin: 0 auto;
  color: var(--mid);
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.home-hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
}

.home-hero h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

.home-hero .hero-sub {
  max-width: 700px;
}

/* Domain Search */
.domain-search {
  margin-top: 32px;
}

.search-box {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border: 1.5px solid var(--light);
  border-radius: 999px;
  padding: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
}

.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  padding: 0 14px;
}

.search-tld {
  white-space: nowrap;
  color: var(--mid);
  border-left: 1px solid var(--light);
  padding-left: 14px;
}

.tld-pills {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.tld-pill {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--light);
  background: #fff;
  cursor: pointer;
  color: var(--mid);
}

.tld-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#search-results {
  max-width: 720px;
  margin: 16px auto 0;
  display: none;
  text-align: left;
}

.result-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--light);
  padding: 16px 18px;
  border-radius: 14px;
  margin-bottom: 10px;
}

.result-domain {
  font-weight: 700;
}

.result-price {
  font-size: 0.9rem;
  color: var(--mid);
}

.result-available {
  color: var(--green);
  font-weight: 700;
  font-size: 0.84rem;
}

.result-taken {
  color: #dc2626;
  font-weight: 700;
  font-size: 0.84rem;
}

.helper-note {
  font-size: 0.85rem;
  color: var(--mid);
  margin-top: 12px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Stats */
.stats-bar {
  background: var(--darker);
  padding: 24px;
}

.stats-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-num {
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  color: #fff;
}

.stat-label {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.65);
}

/* Generic */
section {
  padding: 88px 24px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

h2 {
  margin: 0 0 18px;
  font-family: 'DM Serif Display', serif;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.14;
  letter-spacing: -1px;
  color: var(--darker);
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.section-sub {
  font-size: 1.04rem;
  color: var(--mid);
  max-width: 760px;
}

.grid-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: #fff;
  border: 1px solid var(--light);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.icon-box {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.45rem;
  margin-bottom: 16px;
}

.notice {
  border-left: 4px solid var(--accent);
  background: #e8f0fb;
  padding: 16px 18px;
  border-radius: 12px;
  color: #123;
  margin-top: 20px;
}

.check-list,
.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.check-list li,
.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.check-list li::before,
.feature-list li::before {
  content: '✓';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(22, 163, 74, 0.12);
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Layout blocks */
.cta-box {
  background: var(--darker);
  color: #fff;
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cta-box p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
}

.about-layout,
.contact-layout,
.dns-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.about-image {
  background: var(--off-white);
  border-radius: var(--radius);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.1), transparent 60%);
}

.about-info {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 24px;
}

.about-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.about-item-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* Contact */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #fff;
  padding: 28px;
  border: 1px solid var(--light);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.contact-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 700;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 13px 16px;
  border: 1.5px solid var(--light);
  border-radius: 12px;
  background: #fff;
  outline: none;
  width: 100%;
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--light);
  border-radius: 16px;
  padding: 16px;
}

.contact-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: #e8f0fb;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-item h3 {
  font-size: 0.82rem;
  color: var(--mid);
  margin: 0 0 3px;
}

.contact-item p {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 600;
}

/* DNS card */
.dns-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 24px;
  color: #fff;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.24);
}

.dns-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.dns-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dns-dot.red {
  background: #ef4444;
}

.dns-dot.yellow {
  background: #facc15;
}

.dns-dot.green {
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
}

.dns-record {
  display: grid;
  grid-template-columns: 1.3fr 60px 1fr 48px;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
}

.dns-record:last-child {
  border-bottom: none;
}

.dns-name {
  color: #93c5fd;
  overflow-wrap: anywhere;
}

.dns-type {
  color: #fde047;
}

.dns-value {
  color: rgba(255, 255, 255, 0.72);
  overflow-wrap: anywhere;
}

.dns-ttl {
  color: rgba(255, 255, 255, 0.38);
  text-align: right;
}

/* Footer */
footer {
  background: var(--darker);
  color: rgba(255, 255, 255, 0.56);
  padding: 60px 24px 40px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 42px;
  margin-bottom: 42px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  font-family: 'DM Serif Display', serif;
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 12px;
}

.footer-logo span {
  color: #60a5fa;
}

.footer-desc {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
  margin: 0;
}

.footer-col h3 {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.footer-col a {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.56);
  text-decoration: none;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.82rem;
  flex-wrap: wrap;
}

/* Formular-Validierung */
.form-group input:user-invalid,
.form-group textarea:user-invalid,
.form-group select:user-invalid {
  border-color: #dc2626;
  background: #fef2f2;
}

.form-group.invalid input,
.form-group.invalid textarea,
.form-group.invalid select {
  border-color: #dc2626;
  background: #fef2f2;
}

.field-error {
  display: none;
  margin-top: 6px;
  font-size: 0.82rem;
  color: #b91c1c;
  line-height: 1.4;
}

.form-group.invalid .field-error {
  display: block;
}

/* Responsive */
@media (max-width: 1080px) {
  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-top {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (max-width: 860px) {
  :root {
    --nav-height: 60px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .nav-links-wrap {
    position: absolute;
    top: calc(100% + 8px);
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--light);
    border-radius: 18px;
    padding: 16px;
    box-shadow: var(--shadow);
  }

  nav.menu-open .nav-links-wrap {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    gap: 10px;
  }

  .nav-links a {
    display: block;
    padding: 10px 4px;
    font-size: 1rem;
  }

  .nav-cta {
    width: 100%;
  }

  .grid-2,
  .grid-3,
  .about-layout,
  .contact-layout,
  .dns-layout,
  .footer-top,
  .stats-inner,
  .contact-grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .search-box {
    border-radius: 24px;
    flex-direction: column;
    align-items: stretch;
  }

  .search-tld {
    border-left: none;
    border-top: 1px solid var(--light);
    padding-left: 0;
    padding-top: 10px;
  }

  .result-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .dns-record {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .dns-ttl {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .hero,
  section,
  footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-inner {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
}