/* =========================================================
   Signal366 — site.css
   Warm, social, celebratory. See /shared/DESIGN-SYSTEM.md
   for the cross-network rationale behind these tokens.
   ========================================================= */

:root {
  /* Color */
  --color-bg: #F7ECE3;
  --color-bg-alt: #FFFFFF;
  --color-plum-deep: #1F1329;
  --color-plum-mid: #2E1E40;
  --color-ink: #2C1B3D;
  --color-ink-soft: #5B4B6B;
  --color-gold: #F3A73F;
  --color-gold-deep: #D98A1F;
  --color-berry: #D6336C;
  --color-berry-deep: #B01F54;
  --color-cream-on-dark: #F7ECE3;
  --color-line: rgba(44, 27, 61, 0.14);
  --color-line-on-dark: rgba(247, 236, 227, 0.16);
  --color-focus: #D6336C;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Work Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Scale */
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.3rem + 1vw, 1.9rem);
  --step-3: clamp(2rem, 1.6rem + 2vw, 2.75rem);
  --step-4: clamp(2.6rem, 1.9rem + 3.5vw, 4.2rem);

  /* Layout */
  --content-max: 72rem;
  --content-pad: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 6px;
  --radius-md: 14px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; line-height: 1.08; font-weight: 600; }
p { margin: 0 0 1em; max-width: 62ch; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; }

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

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-plum-deep);
  color: var(--color-cream-on-dark);
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--content-pad);
}
section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section-on-dark { background: var(--color-plum-deep); color: var(--color-cream-on-dark); }
.section-on-dark p { color: rgba(247, 236, 227, 0.78); }
.section-alt { background: var(--color-bg-alt); }

.eyebrow-plain {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-berry-deep);
  margin: 0 0 0.75rem;
}
.section-on-dark .eyebrow-plain { color: var(--color-gold); }

.section-head { max-width: 42rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head h2 { font-size: var(--step-3); }
.section-head p { font-size: var(--step-1); color: var(--color-ink-soft); margin-top: 0.9rem; }
.section-on-dark .section-head p { color: rgba(247, 236, 227, 0.78); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--color-berry);
  color: #fff;
}
.btn-primary:hover { background: var(--color-berry-deep); }
.btn-secondary {
  background: transparent;
  border-color: currentColor;
  color: var(--color-ink);
}
.section-on-dark .btn-secondary { color: var(--color-cream-on-dark); }
.btn-secondary:hover { background: rgba(44, 27, 61, 0.08); }
.section-on-dark .btn-secondary:hover { background: rgba(247, 236, 227, 0.1); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247, 236, 227, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-ink);
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--color-gold), var(--color-berry), var(--color-gold));
  flex-shrink: 0;
}
.primary-nav ul { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); }
.primary-nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--color-ink-soft);
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
}
.primary-nav a:hover, .primary-nav a[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-berry);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 46rem) {
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-line);
    display: none;
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: flex-start; padding: 1.25rem var(--content-pad) 1.75rem; gap: 1rem; }
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(120% 140% at 78% 0%, #3A2650 0%, var(--color-plum-deep) 55%);
  color: var(--color-cream-on-dark);
  padding-block: clamp(3rem, 9vw, 6rem);
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 1.1rem;
}
.hero h1 {
  font-size: var(--step-4);
  letter-spacing: -0.01em;
}
.hero-lede {
  font-size: var(--step-1);
  color: rgba(247, 236, 227, 0.82);
  margin-top: 1.25rem;
  max-width: 34ch;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; }
.hero-note {
  margin-top: 1.75rem;
  font-size: 0.9rem;
  color: rgba(247, 236, 227, 0.6);
}

@media (max-width: 55rem) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* ---------- Day field (366-dot motif) ---------- */
.day-field-wrap { display: flex; justify-content: center; }
.day-field {
  position: relative;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
}
.day-field-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}
.day-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  margin: -3px;
  border-radius: 50%;
  background: rgba(247, 236, 227, 0.28);
  border: none;
  padding: 0;
  cursor: pointer;
  transform: rotate(var(--angle)) translateY(calc(var(--radius) * -1));
  transition: background 0.15s var(--ease), transform 0.15s var(--ease);
}
.day-dot:hover, .day-dot:focus-visible { background: var(--color-gold); transform: rotate(var(--angle)) translateY(calc(var(--radius) * -1)) scale(1.6); }
.day-dot[aria-pressed="true"] { background: var(--color-berry); width: 10px; height: 10px; margin: -5px; }
.day-field-center {
  position: absolute;
  inset: 28%;
  border-radius: 50%;
  background: var(--color-plum-mid);
  border: 1px solid var(--color-line-on-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
}
.day-field-center .label { font-size: 0.75rem; text-transform: none; color: var(--color-gold); font-weight: 600; }
.day-field-center .value { font-family: var(--font-display); font-size: var(--step-2); margin-top: 0.2rem; }
@media (prefers-reduced-motion: no-preference) {
  .day-dot.is-today { animation: pulse-today 2.4s ease-in-out infinite; }
}
@keyframes pulse-today {
  0%, 100% { background: var(--color-gold); }
  50% { background: var(--color-berry); }
}

/* ---------- Today's Signal ---------- */
.today-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
}
.today-card .date-badge {
  font-family: var(--font-display);
  font-size: var(--step-3);
  color: var(--color-berry-deep);
  line-height: 1;
  white-space: nowrap;
}
.today-card .date-badge span { display: block; font-family: var(--font-body); font-size: 0.85rem; color: var(--color-ink-soft); font-weight: 500; margin-top: 0.3rem; }
.today-card h3 { font-size: var(--step-1); margin-bottom: 0.4rem; }
@media (max-width: 40rem) {
  .today-card { grid-template-columns: 1fr; text-align: left; }
}

/* ---------- Feature grid (What Signal366 Is) ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.feature-item { border-top: 3px solid var(--color-gold); padding-top: 1.1rem; }
.feature-item:nth-child(3n+2) { border-top-color: var(--color-berry); }
.feature-item:nth-child(3n) { border-top-color: var(--color-ink); }
.feature-item h3 { font-size: var(--step-1); margin-bottom: 0.5rem; }
.feature-item p { color: var(--color-ink-soft); }

/* ---------- Discover Your Date (interactive) ---------- */
.discover-panel {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.date-picker-form {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.75rem;
}
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field label { font-weight: 600; font-size: 0.9rem; }
.field select, .field input {
  font: inherit;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-line);
  background: var(--color-bg);
  color: var(--color-ink);
  min-width: 8rem;
}
.discover-result {
  border-top: 1px solid var(--color-line);
  padding-top: 1.5rem;
  min-height: 4.5rem;
}
.discover-result .placeholder { color: var(--color-ink-soft); font-style: italic; }
.discover-result h4 { font-size: var(--step-1); margin-bottom: 0.4rem; }
.discover-result .stat-row { display: flex; gap: 1.75rem; flex-wrap: wrap; margin-top: 0.75rem; }
.discover-result .stat { }
.discover-result .stat strong { display: block; font-family: var(--font-display); font-size: var(--step-2); color: var(--color-berry-deep); }
.discover-result .stat span { font-size: 0.85rem; color: var(--color-ink-soft); }

/* ---------- Categories (Birthdays / milestones / communities) ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.5rem;
}
.category-card {
  border-radius: var(--radius-md);
  padding: 1.75rem;
  color: #fff;
  min-height: 12rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
}
.category-card h3 { font-size: var(--step-1); color: #fff; }
.category-card p { color: rgba(255,255,255,0.85); margin: 0.6rem 0 0; }
.category-card .go { align-self: flex-start; margin-top: 1rem; font-weight: 600; border-bottom: 2px solid rgba(255,255,255,0.5); }
.category-card--birthdays { background: linear-gradient(155deg, #D6336C, #A81E52); }
.category-card--milestones { background: linear-gradient(155deg, #F3A73F, #C97A1B); }
.category-card--communities { background: linear-gradient(155deg, #2E1E40, #1F1329); }

/* ---------- How it works ---------- */
.steps { counter-reset: step; display: grid; gap: 1.75rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.step-item { position: relative; padding-left: 3rem; }
.step-item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0; top: -0.1rem;
  width: 2.1rem; height: 2.1rem;
  border-radius: 50%;
  background: var(--color-plum-deep);
  color: var(--color-gold);
  font-family: var(--font-display);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.step-item h3 { font-size: var(--step-1); margin-bottom: 0.4rem; }
.step-item p { color: var(--color-ink-soft); }

/* ---------- Founding community banner ---------- */
.founding-banner {
  border-radius: var(--radius-md);
  background: linear-gradient(120deg, var(--color-gold) 0%, var(--color-berry) 100%);
  padding: clamp(2rem, 5vw, 3.5rem);
  color: #241326;
  display: grid;
  grid-template-columns: 1.3fr auto;
  gap: 2rem;
  align-items: center;
}
.founding-banner h2 { font-size: var(--step-2); color: #241326; }
.founding-banner p { color: rgba(36, 19, 38, 0.82); }
.founding-banner .btn-primary { background: #241326; }
.founding-banner .btn-primary:hover { background: #150b17; }
@media (max-width: 40rem) { .founding-banner { grid-template-columns: 1fr; text-align: left; } }

/* ---------- Privacy / safety ---------- */
.principles-list { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.principle-item { display: flex; gap: 0.9rem; }
.principle-item .mark {
  flex-shrink: 0;
  width: 2rem; height: 2rem;
  border-radius: 50%;
  background: var(--color-gold);
  display: flex; align-items: center; justify-content: center;
}
.principle-item h4 { font-size: 1.05rem; margin-bottom: 0.25rem; }
.principle-item p { color: var(--color-ink-soft); font-size: 0.95rem; margin: 0; }

/* ---------- Coming soon preview ---------- */
.coming-grid { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.coming-card {
  border: 1px dashed var(--color-line);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.coming-card .status-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-berry-deep);
  background: rgba(214, 51, 108, 0.1);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}
.coming-card h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.coming-card p { color: var(--color-ink-soft); font-size: 0.95rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-plum-deep);
  color: rgba(247, 236, 227, 0.75);
  padding-block: clamp(3rem, 6vw, 4rem) 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-line-on-dark);
}
.footer-brand .brand { color: var(--color-cream-on-dark); }
.footer-brand p { color: rgba(247, 236, 227, 0.65); margin-top: 0.9rem; max-width: 28ch; }
.footer-col h4 { font-size: 0.9rem; color: var(--color-cream-on-dark); margin-bottom: 0.9rem; }
.footer-col ul { display: grid; gap: 0.6rem; }
.footer-col a { text-decoration: none; color: rgba(247, 236, 227, 0.7); }
.footer-col a:hover { color: var(--color-cream-on-dark); }
.footer-legal {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  padding-top: 1.5rem;
  font-size: 0.85rem;
}
.footer-legal .network-line { color: rgba(247, 236, 227, 0.55); }
@media (max-width: 46rem) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- Simple sub-pages (join/about/contact/coming-soon) ---------- */
.simple-page-hero {
  background: var(--color-plum-deep);
  color: var(--color-cream-on-dark);
  padding-block: clamp(3rem, 7vw, 5rem);
}
.simple-page-hero h1 { font-size: var(--step-3); }
.simple-page-hero p { color: rgba(247, 236, 227, 0.8); font-size: var(--step-1); margin-top: 1rem; max-width: 40ch; }
.simple-content { padding-block: clamp(3rem, 6vw, 4.5rem); }
.simple-content h2 { font-size: var(--step-2); margin-bottom: 1rem; }
.simple-content .wrap { max-width: 48rem; }
.form-grid { display: grid; gap: 1.1rem; max-width: 32rem; margin-top: 1.5rem; }
.form-grid label { font-weight: 600; display: block; margin-bottom: 0.4rem; }
.form-grid input, .form-grid textarea, .form-grid select {
  width: 100%;
  font: inherit;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-line);
  background: var(--color-bg-alt);
}