/* ============================================================
   Meridian Health — Design Tokens
   All values multiples of 2. Base unit = 4px.
   Container 1280, max canvas 1440. 12-col grid, gutter 24px.
   ============================================================ */

:root {
  /* ---- Palette: Clinical Blue (default) ---- */
  --color-bg:        #f7f9fb;
  --color-surface:   #ffffff;
  --color-surface-2: #eef3f8;
  --color-fg:        #0d1b2a;
  --color-fg-muted:  #4a5a6b;
  --color-fg-soft:   #7a8a9b;
  --color-border:    #d8e0e8;
  --color-border-strong: #b8c4d2;
  --color-primary:   #0a4d8c;
  --color-primary-fg: #ffffff;
  --color-primary-hover: #083d70;
  --color-accent:    #2e7cc4;
  --color-accent-soft: #e8eef5;
  --color-success:   #1f7a4c;
  --color-warning:   #b86e1a;

  /* ---- Typography ---- */
  --font-serif: "Source Serif 4", "Source Serif Pro", Georgia, serif;
  --font-sans:  "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono:  "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-heading: var(--font-serif);
  --font-body:    var(--font-sans);

  /* Type scale — fluid but capped */
  --fs-display: 64px;
  --fs-h1: 56px;
  --fs-h2: 40px;
  --fs-h3: 28px;
  --fs-h4: 20px;
  --fs-body-lg: 18px;
  --fs-body:    16px;
  --fs-sm:      14px;
  --fs-xs:      12px;
  --fs-eyebrow: 12px;

  --lh-tight: 1.1;
  --lh-snug:  1.25;
  --lh-base:  1.5;
  --lh-loose: 1.6;

  /* ---- Radius ---- */
  --r-xs: 4px;
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-pill: 999px;
  --r-card: var(--r-md);
  --r-button: var(--r-sm);
  --r-input: var(--r-sm);

  /* ---- Spacing scale (multiples of 4) ---- */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-7: 32px;
  --s-8: 40px;
  --s-9: 48px;
  --s-10: 64px;
  --s-11: 80px;
  --s-12: 96px;
  --s-13: 128px;

  /* ---- Section padding (density-driven) ---- */
  --section-py: 96px;
  --section-py-sm: 64px;
  --container-max: 1280px;
  --container-px: 32px;

  /* ---- Shadows ---- */
  --shadow-sm: 0 1px 2px rgba(13,27,42,0.04), 0 0 0 1px rgba(13,27,42,0.04);
  --shadow-md: 0 4px 12px rgba(13,27,42,0.06), 0 0 0 1px rgba(13,27,42,0.04);
  --shadow-lg: 0 12px 32px rgba(13,27,42,0.10), 0 0 0 1px rgba(13,27,42,0.04);

  /* ---- Motion ---- */
  --ease: cubic-bezier(.3,.7,.4,1);
  --t-fast: 120ms;
  --t-base: 200ms;
}

/* ---- Density modifiers ---- */
[data-density="compact"] {
  --section-py: 64px;
  --section-py-sm: 48px;
  --fs-display: 56px;
  --fs-h1: 48px;
  --fs-h2: 32px;
}
[data-density="spacious"] {
  --section-py: 128px;
  --section-py-sm: 80px;
  --fs-display: 72px;
  --fs-h1: 64px;
  --fs-h2: 48px;
}

/* ---- Radius modifiers ---- */
[data-radius="sharp"] {
  --r-card: 0px;
  --r-button: 0px;
  --r-input: 0px;
  --r-md: 0px; --r-lg: 0px; --r-xl: 0px;
}
[data-radius="pill"] {
  --r-button: 999px;
  --r-input: 999px;
  --r-card: 20px;
}

/* ============================================================
   Base + Reset
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-base);
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: var(--lh-tight);
  margin: 0;
  letter-spacing: -0.01em;
}
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img, svg { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }

/* ============================================================
   Layout primitives
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}
.section {
  padding-top: var(--section-py);
  padding-bottom: var(--section-py);
}
.section--surface { background: var(--color-surface); }
.section--surface-2 { background: var(--color-surface-2); }
.section--primary { background: var(--color-primary); color: var(--color-primary-fg); }
.section--dark { background: var(--color-fg); color: #fff; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--s-4);
}
[data-section-light="1"] .eyebrow { color: rgba(255,255,255,0.85); }

.lede {
  font-size: var(--fs-body-lg);
  line-height: var(--lh-loose);
  color: var(--color-fg-muted);
  max-width: 56ch;
  text-wrap: pretty;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  height: 48px;
  padding: 0 24px;
  border-radius: var(--r-button);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
  white-space: nowrap;
  text-decoration: none;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-primary-fg);
}
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--secondary {
  background: transparent;
  color: var(--color-fg);
  border-color: var(--color-border-strong);
}
.btn--secondary:hover { background: var(--color-surface-2); border-color: var(--color-fg); }
.btn--ghost {
  background: transparent;
  color: var(--color-primary);
}
.btn--ghost:hover { background: var(--color-accent-soft); }
.btn--lg { height: 56px; padding: 0 32px; font-size: var(--fs-body-lg); }
.btn--sm { height: 36px; padding: 0 16px; font-size: var(--fs-sm); }

[data-section-light="1"] .btn--secondary {
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
[data-section-light="1"] .btn--secondary:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* ============================================================
   Placeholders (striped SVG)
   ============================================================ */
.ph {
  position: relative;
  background-color: var(--color-surface-2);
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0,
    transparent 12px,
    rgba(13,27,42,0.04) 12px,
    rgba(13,27,42,0.04) 24px
  );
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--r-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.ph__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-fg-muted);
  background: var(--color-surface);
  padding: 6px 10px;
  border-radius: var(--r-xs);
  border: 1px solid var(--color-border);
  text-align: center;
  max-width: 80%;
}

/* ============================================================
   Cards / list utilities
   ============================================================ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--r-card);
  padding: var(--s-7);
  transition: border-color var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
.card:hover { border-color: var(--color-border-strong); }

.divider { height: 1px; background: var(--color-border); border: 0; margin: 0; }

/* ============================================================
   Section heading
   ============================================================ */
.sec-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  max-width: 720px;
  margin-bottom: var(--s-9);
}
.sec-head--center { text-align: center; margin-left: auto; margin-right: auto; align-items: center; }
.sec-head h2 {
  font-size: var(--fs-h2);
  letter-spacing: -0.015em;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-py: 72px;
    --section-py-sm: 48px;
    --fs-display: 48px;
    --fs-h1: 40px;
    --fs-h2: 32px;
    --fs-h3: 24px;
  }
}
@media (max-width: 768px) {
  :root {
    --section-py: 56px;
    --section-py-sm: 40px;
    --fs-display: 36px;
    --fs-h1: 32px;
    --fs-h2: 26px;
    --fs-h3: 22px;
    --fs-h4: 18px;
    --container-px: 20px;
  }
  .btn--lg { height: 48px; padding: 0 24px; font-size: var(--fs-body); }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}