/* =========================================================
   PNA — Project Not Alone
   Colors & Type Foundations
   Source: Landing Page/index.html
   ========================================================= */


:root {
  /* -------- Color — Base palette -------- */
  --pna-bg: #f3f8fd;            /* page background — pale sky */
  --pna-surface: #ffffff;        /* cards, inputs */
  --pna-surface-alt: #e8f1fb;    /* quiet callout / blockquote bg */
  --pna-border: #d6e3f0;         /* hairlines */
  --pna-text: #16283d;           /* ink — deep navy */
  --pna-muted: #56708a;          /* secondary text, nav links */
  --pna-placeholder: #90a4b8;    /* input placeholder */

  /* Accent — calm therapeutic blue */
  --pna-accent: #3b7dbf;         /* primary actions */
  --pna-accent-dark: #2a5f96;    /* hover / links */
  --pna-accent-soft: #c9dff3;    /* eyebrow chips, focus rings, gradients */

  /* -------- Semantic color tokens -------- */
  --fg1: var(--pna-text);
  --fg2: var(--pna-muted);
  --fg3: var(--pna-placeholder);
  --fg-accent: var(--pna-accent-dark);

  --bg1: var(--pna-bg);
  --bg2: var(--pna-surface);
  --bg3: var(--pna-surface-alt);

  --border1: var(--pna-border);
  --focus-ring: 0 0 0 3px var(--pna-accent-soft);

  /* -------- Elevation / radii -------- */
  --shadow-sm: 0 1px 2px rgba(22, 40, 61, 0.04);
  --shadow-md: 0 1px 2px rgba(22, 40, 61, 0.04), 0 8px 24px rgba(22, 40, 61, 0.05);
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-pill: 999px;

  /* -------- Spacing scale -------- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 28px;
  --space-7: 36px;
  --space-8: 48px;
  --space-9: 72px;

  /* -------- Type — families -------- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;

  /* -------- Type — scale -------- */
  --text-xs: 12px;   /* eyebrow, legal */
  --text-sm: 13px;   /* footer, nav */
  --text-md: 14px;   /* pillar body, form notes */
  --text-base: 15px; /* inputs, buttons, feature desc */
  --text-lg: 17px;   /* body paragraph */
  --text-xl: 18px;   /* lead paragraph, h3 */
  --text-2xl: 26px;  /* h2 */
  --text-3xl: 40px;  /* h1 */

  /* -------- Layout -------- */
  --maxw: 780px;
}

/* =========================================================
   Semantic type styles — use these class names, or mirror
   with CSS resets if adopting the system globally.
   ========================================================= */

.pna-body {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--fg1);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.pna-h1 {
  font-family: var(--font-serif);
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--fg1);
}

.pna-h2 {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--fg1);
}

.pna-h3 {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.3;
  color: var(--fg1);
}

/* Pillar-style / label headings use Inter uppercase instead */
.pna-h3-label {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-accent);
}

.pna-lead {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--fg2);
  line-height: 1.55;
}

.pna-p {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--fg1);
}

.pna-muted {
  color: var(--fg2);
}

.pna-eyebrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-accent);
  background: var(--pna-accent-soft);
  padding: 5px 10px;
  border-radius: var(--radius-pill);
}

.pna-small {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--fg2);
}

.pna-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--fg1);
  background: var(--bg3);
  border-left: 3px solid var(--pna-accent);
  padding: 18px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

a, .pna-link {
  color: var(--fg-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}
a:hover, .pna-link:hover { color: var(--pna-accent); }


html, body {
  margin: 0;
  padding: 0;
  background: var(--pna-bg);
  color: var(--fg1);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }

.pna-wrap { max-width: 780px; margin: 0 auto; padding: 0 28px; }

/* Type resets */
h1, h2, h3 {
  font-family: var(--font-serif);
  color: var(--fg1);
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 0.5em 0;
}
h1 { font-size: 40px; font-weight: 600; }
h2 { font-size: 26px; font-weight: 600; margin-top: 2.2em; }
h3 { font-size: 18px; font-weight: 600; margin-top: 1.6em; }

p { margin: 0 0 1.1em 0; color: var(--fg1); }
.pna-lead {
  font-size: 18px;
  color: var(--fg2);
  font-family: var(--font-serif);
  font-style: italic;
  margin: 0 0 1.1em 0;
}

a { color: var(--fg-accent); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--pna-accent); }

hr { border: 0; border-top: 1px solid var(--border1); margin: 3em 0; }

/* Brand / nav */
.pna-nav {
  border-bottom: 1px solid var(--border1);
  background: rgba(243, 248, 253, 0.85);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.pna-nav .pna-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
}
.pna-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.2px;
}
.pna-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--pna-accent);
  box-shadow: 0 0 0 4px var(--pna-accent-soft);
}
.pna-nav ul {
  list-style: none;
  display: flex;
  gap: 24px;
  margin: 0; padding: 0;
  font-size: 14px;
}
.pna-nav a { color: var(--fg2); }
.pna-nav a:hover { color: var(--fg-accent); }

/* Hero */
.pna-hero { padding: 72px 0 24px; }
.pna-hero h1 span { color: var(--fg-accent); }
.pna-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }

/* Buttons */
.pna-btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 15px;
  font-family: inherit;
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.pna-btn-primary { background: var(--pna-accent); color: #fff; }
.pna-btn-primary:hover { background: var(--pna-accent-dark); color: #fff; }
.pna-btn-secondary { background: transparent; color: var(--fg-accent); border-color: var(--border1); }
.pna-btn-secondary:hover { border-color: var(--pna-accent); background: var(--pna-surface); }

/* Pillars */
.pna-pillars {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; margin: 32px 0 8px;
}
.pna-pillar {
  background: var(--pna-surface);
  border: 1px solid var(--border1);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-md);
}
.pna-pillar h3 {
  margin: 0 0 6px 0;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--fg-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}
.pna-pillar p { margin: 0; font-size: 14px; color: var(--fg2); line-height: 1.6; }

/* Feature list */
.pna-features { list-style: none; padding: 0; margin: 16px 0 0; }
.pna-features li {
  padding: 14px 0;
  border-bottom: 1px solid var(--border1);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: baseline;
}
.pna-features li:last-child { border-bottom: 0; }
.pna-feat-label { font-weight: 600; font-size: 14px; color: var(--fg-accent); }
.pna-feat-desc { color: var(--fg2); font-size: 15px; }

/* Blockquote */
blockquote {
  margin: 28px 0;
  padding: 18px 22px;
  background: var(--pna-surface-alt);
  border-left: 3px solid var(--pna-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--fg1);
  font-family: var(--font-serif);
  font-style: italic;
}
blockquote p:last-child { margin-bottom: 0; }

/* Tiers */
.pna-tiers {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 14px; margin-top: 18px;
}
.pna-tier {
  background: var(--pna-surface);
  border: 1px solid var(--border1);
  border-radius: var(--radius-md);
  padding: 20px;
}
.pna-tier h3 { margin: 0 0 4px; font-size: 16px; font-family: var(--font-sans); }
.pna-tier p { margin: 0; font-size: 14px; color: var(--fg2); }

/* Final CTA */
.pna-final-cta {
  margin: 64px 0;
  padding: 36px;
  background: linear-gradient(135deg, var(--pna-accent-soft) 0%, var(--pna-surface) 100%);
  border: 1px solid var(--border1);
  border-radius: var(--radius-md);
  text-align: center;
}
.pna-final-cta h2 { margin-top: 0; }
.pna-final-cta p { color: var(--fg2); max-width: 520px; margin-left: auto; margin-right: auto; }

/* Email form */
.pna-email-form {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center; align-items: center;
  max-width: 460px; margin: 24px auto 0;
}
.pna-email-form input[type="email"],
.pna-email-form input[type="text"] {
  flex: 1 1 240px;
  min-width: 0;
  padding: 11px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--fg1);
  background: var(--pna-surface);
  border: 1px solid var(--border1);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.pna-email-form input[type="email"]::placeholder,
.pna-email-form input[type="text"]::placeholder { color: var(--fg3); }
.pna-email-form input[type="email"]:focus,
.pna-email-form input[type="text"]:focus {
  border-color: var(--pna-accent);
  box-shadow: var(--focus-ring);
}
.pna-form-note {
  flex: 1 1 100%;
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--fg2);
  text-align: center;
}
.pna-form-note.success { color: var(--fg-accent); font-weight: 500; }
.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;
}

/* Signup form states (Convex integration) */
.pna-form-note.error { color: #c0392b; font-weight: 500; }
.pna-btn[disabled] { opacity: 0.7; cursor: progress; }

/* Footer */
.pna-footer {
  border-top: 1px solid var(--border1);
  margin-top: 40px;
  padding: 28px 0 40px;
  font-size: 13px;
  color: var(--fg2);
}
.pna-footer .pna-wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.pna-footer a { color: var(--fg2); margin-left: 16px; }
.pna-footer a:hover { color: var(--fg-accent); }

/* Explore — links to secondary pages */
.pna-explore { margin-top: 8px; }
.pna-explore-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px; margin: 24px 0 0;
}
.pna-explore-card {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--pna-surface);
  border: 1px solid var(--border1);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-md);
  color: var(--fg1);
  text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.pna-explore-card:hover {
  border-color: var(--pna-accent);
  transform: translateY(-2px);
  box-shadow: 0 1px 2px rgba(22, 40, 61, 0.04), 0 12px 28px rgba(22, 40, 61, 0.08);
  color: var(--fg1);
}
.pna-explore-card:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.pna-explore-card h3 {
  margin: 0;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--fg-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}
.pna-explore-card p { margin: 0; font-size: 14px; color: var(--fg2); line-height: 1.6; }
.pna-explore-card .pna-explore-more {
  margin-top: auto; padding-top: 8px;
  font-size: 14px; font-weight: 500; color: var(--fg-accent);
}

@media (max-width: 640px) {
  .pna-explore-grid { grid-template-columns: 1fr; }
  h1 { font-size: 32px; }
  h2 { font-size: 22px; }
  .pna-pillars { grid-template-columns: 1fr; }
  .pna-tiers { grid-template-columns: 1fr; }
  .pna-features li { grid-template-columns: 1fr; gap: 4px; }
  .pna-nav ul { display: none; }
}