@import url("https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400..700;1,400..700&family=Strichpunkt+Sans:wght@400..900&display=swap");

:root {
  --font-family-primary: "Strichpunkt Sans", "Inter", "Segoe UI", sans-serif;
  --font-family-display: "Lora", "Segoe UI", sans-serif;
  --font-size-base: 16px;
  --font-weight-base: 400;
  --line-height-base: 1.2;
  --font-size-xs: 14.4px;
  --font-size-sm: 16px;
  --font-size-md: 18.4px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 28px;
  --font-size-3xl: 48px;
  --font-size-4xl: 72px;
  --color-text-primary: #111111;
  --color-surface-muted: #ffffff;
  --color-surface-base: #000000;
  --color-text-inverse: #9f9f9f;
  --color-surface-raised: #f2f2f2;
  --color-surface-strong: #005ff9;
  --color-border-muted: #dcdcdc;
  --color-strong: #c10000;
  --space-1: 1.6px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 40px;
  --space-7: 80px;
  --space-8: 200px;
  --radius-xs: 0px;
  --radius-sm: 0px;
  --motion-duration-instant: 350ms;
  --shadow-soft: 0 16px 40px rgba(17, 17, 17, 0.08);
  --shadow-card: 0 8px 24px rgba(17, 17, 17, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-base);
  line-height: 1.5;
  color: var(--color-text-primary);
  background: linear-gradient(180deg, #f7f9fc 0%, #ffffff 100%);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-surface-strong);
  color: var(--color-surface-muted);
  padding: var(--space-3);
  z-index: 2000;
}

.skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
}

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

.site-header {
  padding: var(--space-7) 0;
  background: var(--color-strong);
  color: var(--color-surface-muted);
}

.hero-shell {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr;
  gap: var(--space-6);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.07);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-family-display);
  font-size: clamp(var(--font-size-2xl), 3vw, var(--font-size-4xl));
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.subtitle {
  margin: 0 0 var(--space-5);
  max-width: 650px;
  font-size: var(--font-size-md);
  color: rgba(255, 255, 255, 0.8);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: 1px solid transparent;
  border-radius: 0;
  padding: 0.8rem 1.15rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--motion-duration-instant) ease, background var(--motion-duration-instant) ease, border-color var(--motion-duration-instant) ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button-primary {
  background: var(--color-strong);
  color: var(--color-surface-muted);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--color-text-inverse);
}

.button-secondary {
  background: transparent;
  color: var(--color-surface-muted);
  border-color: rgba(255, 255, 255, 0.2);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.12);
}

.button-ghost {
  background: var(--color-surface-muted);
  color: var(--color-text-primary);
}

.button-ghost:hover,
.button-ghost:focus-visible {
  background: #eaeef4;
}

.button-sm {
  padding: 0.7rem 1rem;
  font-size: var(--font-size-xs);
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  line-height: 1;
}

.hero-panel {
  display: grid;
  gap: var(--space-3);
}

.hero-panel-card {
  padding: var(--space-4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.05);
}

.hero-panel-label {
  margin: 0 0 var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.hero-panel-value {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.filters-section {
  margin-top: calc(-1 * var(--space-5));
  position: relative;
  z-index: 1;
  padding: var(--space-5);
  background: var(--color-surface-muted);
  border-radius: 0;
  box-shadow: var(--shadow-soft);
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.section-heading h2 {
  margin: 0;
  font-size: var(--font-size-xl);
}

.section-heading p {
  margin: 0;
  color: var(--color-text-inverse);
  max-width: 460px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--color-border-muted);
  border-radius: 0;
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--motion-duration-instant) ease, border-color var(--motion-duration-instant) ease;
}

.filter-chip:hover,
.filter-chip:focus-within {
  border-color: var(--color-surface-strong);
  background: #ebf3ff;
}

.filter-chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.filter-chip input:checked + span {
  font-weight: 700;
  color: var(--color-surface-strong);
}

.filter-chip:has(input:checked) {
  border-color: var(--color-surface-strong);
  background: #ebf3ff;
}

.proposals-section {
  padding: var(--space-6) 0 var(--space-7);
}

.proposals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

.proposal-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border-muted);
  border-radius: 0;
  background: var(--color-surface-muted);
  box-shadow: var(--shadow-card);
  transition: transform var(--motion-duration-instant) ease, box-shadow var(--motion-duration-instant) ease;
}

.proposal-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.proposal-card-top {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.proposal-badge {
  margin: 0;
  font-size: var(--font-size-md);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-surface-strong);
}

.author {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse);
}

.author a {
  color: var(--color-strong);
  font-weight: 600;
  text-decoration: none;
}

.author a:hover,
.author a:focus-visible {
  text-decoration: underline;
}

.description {
  margin: 0;
  color: var(--color-text-primary);
}

.features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.feature-tag {
  padding: 0.35rem 0.6rem;
  border-radius: 0;
  background: var(--color-surface-raised);
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
}

.fields,
.use-cases {
  padding: var(--space-3);
  border-radius: 0;
  background: #fafbfc;
  font-size: var(--font-size-xs);
}

.fields strong,
.use-cases strong {
  display: inline-block;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.use-cases ul {
  margin: 0;
  padding-left: 1rem;
}

.use-cases li + li {
  margin-top: var(--space-2);
}

.actions {
  display: flex;
  gap: var(--space-2);
  margin-top: auto;
}

.site-footer {
  padding: var(--space-5) 0 var(--space-6);
  border-top: 1px solid var(--color-border-muted);
  background: var(--color-surface-muted);
}

.footer-shell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  color: var(--color-text-inverse);
}

.site-footer a {
  color: var(--color-strong);
  text-decoration: none;
}

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

.modal {
  display: none;
  position: fixed;
  inset: 0;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: rgba(17, 17, 17, 0.6);
  z-index: 2000;
}

.modal-content {
  position: relative;
  width: min(860px, 100%);
  max-height: min(90vh, 900px);
  overflow: auto;
  padding: var(--space-5);
  border-radius: 0;
  background: var(--color-surface-muted);
  box-shadow: var(--shadow-soft);
}

.modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  border: 0;
  background: transparent;
  font-size: 1.6rem;
  cursor: pointer;
}

.modal-content h2 {
  margin-top: 0;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-xl);
}

.contribute-section + .contribute-section {
  margin-top: var(--space-4);
}

.contribute-section h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--font-size-md);
}

.contribute-section p,
.contribute-section li {
  color: var(--color-text-primary);
}

.contribute-steps {
  margin: 0;
  padding-left: 1.1rem;
}

.contribute-steps li + li {
  margin-top: var(--space-3);
}

.contribute-steps pre {
  overflow-x: auto;
  padding: var(--space-3);
  border-radius: 0;
  background: var(--color-surface-base);
  color: var(--color-surface-muted);
}

.contribute-tips {
  margin: 0;
  padding-left: 1.1rem;
}

.error,
.no-results {
  padding: var(--space-5);
  border: 1px dashed var(--color-border-muted);
  border-radius: 0;
  text-align: center;
  color: var(--color-text-inverse);
}

.error {
  color: #b42318;
}

@media (max-width: 900px) {
  .hero-shell {
    grid-template-columns: 1fr;
  }

  .section-heading {
    flex-direction: column;
    align-items: start;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: var(--space-6) 0;
  }

  .filters-section {
    margin-top: calc(-1 * var(--space-3));
    padding: var(--space-4);
  }

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

  .button,
  .button-sm {
    width: 100%;
  }

  .modal-content {
    padding: var(--space-4);
  }
}