/* =============================================
   CIVIUM — style.css
   ============================================= */

/* --- Tokens --- */
:root {
  --c-black:    #111827;
  --c-700:      #374151;
  --c-600:      #4b5563;
  --c-500:      #6b7280;
  --c-400:      #9ca3af;
  --c-300:      #d1d5db;
  --c-200:      #e5e7eb;
  --c-100:      #f3f4f6;
  --c-50:       #f9fafb;
  --c-blue-bg:  #dbeafe;
  --c-blue-fg:  #1d4ed8;
  --r:          0.75rem;
  --r-sm:       0.5rem;
  --r-full:     9999px;
  --w-wide:     80rem;
  --w-narrow:   48rem;
}

/* --- Reset & base --- */
html { scroll-behavior: smooth; }

[x-cloak] { display: none !important; }

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

body {
  background: #fff;
  color: var(--c-black);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  margin: 0;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { margin: 0; }

p { margin: 0; }

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

/* --- Nav --- */
.nav {
  border-bottom: 1px solid var(--c-200);
  position: sticky;
  top: 0;
  background: rgb(255 255 255 / 0.9);
  backdrop-filter: blur(8px);
  z-index: 50;
}

.nav__inner {
  max-width: var(--w-wide);
  margin-inline: auto;
  padding-inline: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--c-black);
}

.nav__logo img { height: 1.75rem; }

.nav__links {
  display: none;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--c-600);
}

.nav__links a:hover { color: var(--c-black); }

.nav__toggle {
  display: flex;
  align-items: center;
  padding: 0.5rem;
  color: var(--c-500);
  background: none;
  border: none;
  cursor: pointer;
}

.nav__mobile {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-top: 1px solid var(--c-100);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--c-600);
}

.nav__mobile a:hover { color: var(--c-black); }

@media (min-width: 768px) {
  .nav__links  { display: flex; }
  .nav__toggle { display: none; }
}

/* --- Footer --- */
footer {
  border-top: 1px solid var(--c-100);
  margin-top: 6rem;
  padding-block: 2.5rem;
  font-size: 0.875rem;
  color: var(--c-400);
}

.footer__inner {
  max-width: var(--w-wide);
  margin-inline: auto;
  padding-inline: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer__links { display: flex; gap: 1.5rem; }
.footer__links a:hover { color: var(--c-600); }

@media (min-width: 768px) {
  .footer__inner { flex-direction: row; justify-content: space-between; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--r-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  white-space: nowrap;
  border: 1px solid transparent;
}

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

.btn-primary:hover { background: var(--c-700); border-color: var(--c-700); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-outline {
  background: #fff;
  color: var(--c-700);
  border-color: var(--c-300);
}

.btn-outline:hover { border-color: var(--c-500); }

.btn-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
}

@media (min-width: 640px) {
  .btn-group { flex-direction: row; }
}

/* --- Hero (home) --- */
.hero {
  max-width: var(--w-wide);
  margin-inline: auto;
  padding: 5rem 1rem 4rem;
  text-align: center;
}

.hero__logo {
  height: 10rem;
  display: block;
  margin-inline: auto;
  margin-bottom: 2rem;
}

.hero__badge {
  display: inline-block;
  background: var(--c-100);
  color: var(--c-600);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-full);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-black);
  margin-bottom: 1.5rem;
}

.hero__desc {
  font-size: 1.125rem;
  color: var(--c-500);
  max-width: 42rem;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .hero h1 { font-size: 3rem; }
}

/* --- Waitlist form --- */
.waitlist {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: center;
  max-width: 28rem;
  margin-inline: auto;
}

.waitlist__input {
  flex: 1;
  border: 1px solid var(--c-300);
  border-radius: var(--r-sm);
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-family: inherit;
  outline: none;
}

.waitlist__input:focus { box-shadow: 0 0 0 2px var(--c-black); }
.waitlist__input:disabled { opacity: 0.5; }

.waitlist__note {
  font-size: 0.75rem;
  color: var(--c-400);
  margin-top: 0.75rem;
}

@media (min-width: 640px) {
  .waitlist { flex-direction: row; }
}

/* --- Sections --- */
.section {
  padding-block: 4rem;
}

.section--alt {
  background: var(--c-50);
  padding-block: 4rem;
}

.section__inner {
  max-width: var(--w-wide);
  margin-inline: auto;
  padding-inline: 1rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
}

.section-title--tight { margin-bottom: 1rem; }

.section-subtitle {
  text-align: center;
  color: var(--c-500);
  max-width: 36rem;
  margin-inline: auto;
  margin-bottom: 3rem;
}

.text-center { text-align: center; }

/* --- Cards --- */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .card-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: #fff;
  border: 1px solid var(--c-200);
  border-radius: var(--r);
  padding: 1.5rem;
}

.card--dark {
  background: var(--c-black);
  color: #fff;
  border-color: var(--c-black);
}

.card--sm { padding: 1.25rem; }

.card--link { display: block; transition: border-color 0.15s; }
.card--link:hover { border-color: var(--c-400); }

.card__icon { font-size: 1.5rem; margin-bottom: 0.75rem; }
.card__icon--sm { font-size: 1.5rem; margin-bottom: 0.5rem; }

.card__title { font-weight: 600; margin-bottom: 0.5rem; }
.card__title--sm { font-weight: 600; margin-bottom: 0.25rem; font-size: 0.875rem; }

.card__desc { font-size: 0.875rem; color: var(--c-500); }
.card--dark .card__desc { color: var(--c-300); }

/* --- Feature grid (home — control section) --- */
.feature-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--c-100);
  border-radius: var(--r);
}

.feature-item__icon { font-size: 1.25rem; flex-shrink: 0; }

.feature-item h3 { font-weight: 500; margin-bottom: 0.25rem; font-size: 1rem; }
.feature-item p  { font-size: 0.875rem; color: var(--c-500); }

/* --- CTA section (home) --- */
.cta-section {
  padding-block: 5rem;
  max-width: var(--w-wide);
  margin-inline: auto;
  padding-inline: 1rem;
  text-align: center;
}

.cta-section h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }

.cta-section p {
  color: var(--c-500);
  max-width: 32rem;
  margin-inline: auto;
  margin-bottom: 2rem;
}

/* --- Page sections (inner pages) --- */
.page-section {
  max-width: var(--w-narrow);
  margin-inline: auto;
  padding: 4rem 1rem;
}

.page-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.page-header h1 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.page-header p { color: var(--c-500); }

/* --- How page --- */
.concept { margin-bottom: 3.5rem; }

.concept__heading {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.concept__number {
  background: var(--c-black);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.625rem;
  border-radius: var(--r-full);
  flex-shrink: 0;
}

.concept__heading h2 { font-size: 1.25rem; font-weight: 700; }

.concept > p { color: var(--c-600); margin-bottom: 1rem; }

.code-block {
  background: var(--c-50);
  border-radius: var(--r);
  padding: 1.25rem;
  font-family: ui-monospace, 'Cascadia Code', monospace;
  font-size: 0.875rem;
  color: var(--c-600);
}

.code-block__indent { margin-left: 1rem; color: var(--c-400); }

.trust-circles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  font-size: 0.875rem;
  text-align: center;
}

@media (min-width: 768px) {
  .trust-circles { grid-template-columns: repeat(4, 1fr); }
}

.trust-circle {
  background: var(--c-50);
  border: 1px solid var(--c-200);
  border-radius: var(--r);
  padding: 1rem;
}

.trust-circle--dark {
  background: var(--c-black);
  color: #fff;
  border-color: var(--c-black);
}

.trust-circle__number { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.25rem; }
.trust-circle__name   { font-weight: 500; margin-bottom: 0.25rem; }
.trust-circle__desc   { font-size: 0.75rem; color: var(--c-400); }
.trust-circle--dark .trust-circle__desc { color: var(--c-300); }

.accord-block {
  background: var(--c-50);
  border-radius: var(--r);
  padding: 1.25rem;
  font-size: 0.875rem;
  color: var(--c-600);
}

.accord-block__nodes {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.accord-block__node {
  background: #fff;
  border: 1px solid var(--c-200);
  border-radius: 0.25rem;
  padding: 0.25rem 0.5rem;
  font-weight: 500;
}

.accord-block__arrow { color: var(--c-400); }

.accord-block__details {
  font-size: 0.75rem;
  color: var(--c-400);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.plugin-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.plugin-tag {
  background: var(--c-100);
  color: var(--c-600);
  font-size: 0.875rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-full);
}

/* --- Roadmap page --- */
.roadmap-item {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.roadmap-item__timeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
}

.roadmap-dot {
  width: 2rem;
  height: 2rem;
  border-radius: var(--r-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.roadmap-dot--active   { background: var(--c-black); color: #fff; }
.roadmap-dot--inactive { background: var(--c-100); color: var(--c-500); }

.roadmap-line {
  flex: 1;
  width: 1px;
  background: var(--c-200);
  margin-block: 0.5rem;
}

.roadmap-item__content { flex: 1; padding-bottom: 0.5rem; }

.roadmap-item__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.roadmap-item__label { font-size: 0.75rem; font-weight: 500; color: var(--c-400); }

.status-badge {
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: var(--r-full);
}

.status-badge--active   { background: var(--c-blue-bg); color: var(--c-blue-fg); }
.status-badge--inactive { background: var(--c-100); color: var(--c-500); }

.roadmap-item__content h2 {
  font-weight: 600;
  color: var(--c-black);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.roadmap-item__content ul {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.roadmap-item__content li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--c-500);
}

.roadmap-item__content li::before {
  content: '◦';
  color: var(--c-300);
  margin-top: 0.125rem;
  flex-shrink: 0;
}

/* --- Use cases page --- */
.usecase {
  margin-bottom: 3.5rem;
  scroll-margin-top: 5rem;
}

.usecase__header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.usecase__emoji { font-size: 2.5rem; line-height: 1; }

.usecase__info h2  { font-size: 1.25rem; font-weight: 700; }
.usecase__info p   { font-size: 0.875rem; color: var(--c-400); margin-top: 0.125rem; }

.usecase__desc { color: var(--c-600); margin-bottom: 1rem; }

.usecase__features { display: flex; flex-direction: column; gap: 0.5rem; }

.usecase__features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--c-600);
}

.usecase__features li::before {
  content: '✓';
  color: var(--c-400);
  margin-top: 0.125rem;
  flex-shrink: 0;
}

/* --- Contribute page --- */
.contribute-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 768px) {
  .contribute-grid { grid-template-columns: repeat(2, 1fr); }
}

.contribute-card {
  border: 1px solid var(--c-200);
  border-radius: var(--r);
  padding: 1.5rem;
}

.contribute-card--link { display: block; transition: border-color 0.15s; }
.contribute-card--link:hover { border-color: var(--c-400); }

.contribute-card__icon { font-size: 1.5rem; margin-bottom: 0.75rem; }

.contribute-card h2    { font-weight: 600; margin-bottom: 0.5rem; font-size: 1rem; }
.contribute-card p     { font-size: 0.875rem; color: var(--c-500); margin-bottom: 0.75rem; }

.contribute-card__cta  { font-size: 0.875rem; font-weight: 500; color: var(--c-black); }
.contribute-card__soon { font-size: 0.875rem; color: var(--c-400); }

.principles {
  background: var(--c-50);
  border-radius: var(--r);
  padding: 2rem;
}

.principles h2 { font-weight: 600; margin-bottom: 1rem; font-size: 1rem; }

.principles ul { display: flex; flex-direction: column; gap: 0.75rem; }

.principles li {
  display: flex;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--c-600);
}

.principles li::before {
  content: '→';
  color: var(--c-400);
  flex-shrink: 0;
}

/* --- Shared utilities --- */
.info-box {
  background: var(--c-50);
  border-radius: var(--r);
  padding: 1.5rem;
  text-align: center;
}

.info-box p { color: var(--c-600); margin-bottom: 1rem; }

.text-link {
  font-size: 0.875rem;
  color: var(--c-500);
  text-decoration: underline;
  text-underline-offset: 0.125rem;
}

.text-link:hover { color: var(--c-black); }