/* ============================================================
   Carbonorm — Design Tokens
   Seed-inspired (Forest & Snow Laboratory) + Industrial Authority override
   ============================================================ */

:root {
  /* === Core palette (DESIGN.md base + brand override) === */
  --color-forest-green: #1A3C2E;        /* primary brand (override) */
  --color-forest-deep: #11241B;         /* hover / pressed */
  --color-snow-white: #FCFCF7;          /* canvas */
  --color-warm-gray: #EEEEE9;           /* secondary surface */
  --color-pale-green: #D3FA99;          /* Seed accent — pale lime */
  --color-pale-green-soft: #E6FBC4;     /* softer wash for backgrounds */
  --color-pale-green-deep: #B6E36A;     /* hover / pressed accent */
  --color-frosted-glass: #C4C7C4;
  --color-charcoal-text: #0A0A0A;

  /* Muted product palette (Seed reference, retained for product/category accents) */
  --color-muted-product-green: #757C5D;
  --color-muted-product-yellow: #9F995B;
  --color-muted-product-teal: #698E79;
  --color-muted-text: #4A5A50;
  --color-ghost-button-gray: #B3B3B3;
  --color-dark-overlay: #666666;

  /* === Carbonorm/Carbonorm brand additions === */
  --color-amber: #C9700A;               /* CTA on dark / deadline urgency */
  --color-amber-soft: #F5E4D0;
  --color-audit-slate: #2A3340;         /* data-table headers, dark mode */
  --color-audit-slate-muted: #4A5563;

  /* === PPWR grade semantics === */
  --color-grade-a: #1F7A4D;
  --color-grade-a-bg: #E1F2EA;
  --color-grade-b: #C9700A;
  --color-grade-b-bg: #F5E4D0;
  --color-grade-c: #B8651D;
  --color-grade-c-bg: #F7DDC8;
  --color-grade-d: #8B1F1F;
  --color-grade-d-bg: #F5DCDC;

  /* === CBAM status === */
  --color-cbam-verified: #1A3C2E;
  --color-cbam-pending: #C9700A;
  --color-cbam-rejected: #8B1F1F;

  /* === Doc status === */
  --color-doc-draft: #6B7280;
  --color-doc-signed: #1F7A4D;
  --color-doc-expired: #8B1F1F;

  /* === Type === */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --text-micro: 11px;
  --text-caption: 13px;
  --text-body: 16px;
  --text-subheading: 24px;
  --text-heading: 32px;
  --text-heading-lg: 40px;
  --text-display: 48px;
  --text-display-lg: 64px;

  --leading-display: 0.92;
  --leading-heading: 1.08;
  --leading-subheading: 1.18;
  --leading-body: 1.5;

  --tracking-display: -0.03em;
  --tracking-heading: -0.02em;
  --tracking-subheading: -0.015em;
  --tracking-body: -0.003em;
  --tracking-mono: 0.015em;
  --tracking-eyebrow: 0.12em;

  /* === Spacing === */
  --s-8: 8px;   --s-16: 16px; --s-24: 24px; --s-32: 32px;
  --s-40: 40px; --s-48: 48px; --s-56: 56px; --s-64: 64px;
  --s-80: 80px; --s-96: 96px; --s-128: 128px; --s-160: 160px;

  /* === Radii === */
  --radius-input: 8px;
  --radius-card: 12px;
  --radius-card-lg: 16px;
  --radius-badge: 6px;
  --radius-button: 8px;        /* square with slight curve */
  --radius-full: 999px;        /* true pills retained for status chips/dots */
  --radius-full-2: 999px;
  --radius-full-3: 999px;

  /* Layout (Seed reference) */
  --section-gap: 32px;
  --card-padding: 16px;
  --element-gap: 8px;
}

/* ============================================================
   Base reset for marketing pages
   ============================================================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--color-charcoal-text);
  background: var(--color-snow-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}
img { max-width: 100%; display: block; }

/* ============================================================
   Reusable primitives
   ============================================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  font-weight: 400;
}
.mono { font-family: var(--font-mono); letter-spacing: var(--tracking-mono); }

/* ============================================================
   Button system — 3 tiers, light & dark surfaces.
   All square (8px). Pill is reserved for status chips only.
     PRIMARY    — solid fill, strongest weight (main action)
     SECONDARY  — outlined, equal weight to primary in form (parallel action)
     GHOST      — text-link with underline (tertiary, lowest emphasis)
   ============================================================ */

/* -- LIGHT BG (snow / warm-gray surfaces) ----------------------- */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-forest-green); color: var(--color-snow-white);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 14px 24px; border: 1.5px solid var(--color-forest-green);
  border-radius: var(--radius-button);
  cursor: pointer; text-decoration: none; transition: background 160ms ease, color 160ms ease;
  letter-spacing: -0.005em;
}
.btn-primary:hover { background: var(--color-forest-deep); border-color: var(--color-forest-deep); }
.btn-primary.amber { background: var(--color-amber); border-color: var(--color-amber); }
.btn-primary.amber:hover { background: #A85C08; border-color: #A85C08; }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--color-forest-green);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 12.5px 22px; border: 1.5px solid var(--color-forest-green);
  border-radius: var(--radius-button);
  cursor: pointer; text-decoration: none; transition: background 160ms ease, color 160ms ease;
  letter-spacing: -0.005em;
}
.btn-secondary:hover { background: var(--color-forest-green); color: var(--color-snow-white); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; color: var(--color-forest-green);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 14px 0; border: none; cursor: pointer; text-decoration: none;
  border-bottom: 1px solid var(--color-forest-green);
  transition: opacity 160ms ease;
}
.btn-ghost:hover { opacity: 0.65; }

/* -- DARK BG (forest-green panels) ----------------------------- */
.btn-primary-light {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--color-snow-white); color: var(--color-forest-green);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 14px 24px; border: 1.5px solid var(--color-snow-white);
  border-radius: var(--radius-button);
  cursor: pointer; text-decoration: none; transition: background 160ms ease, color 160ms ease;
  letter-spacing: -0.005em;
}
.btn-primary-light:hover { background: var(--color-pale-green); border-color: var(--color-pale-green); }
.btn-primary-light.pale-green { background: var(--color-pale-green); color: var(--color-forest-deep); border-color: var(--color-pale-green); }
.btn-primary-light.pale-green:hover { background: var(--color-pale-green-deep); border-color: var(--color-pale-green-deep); }

.btn-secondary-light {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--color-snow-white);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 12.5px 22px; border: 1.5px solid rgba(252,252,247,0.45);
  border-radius: var(--radius-button);
  cursor: pointer; text-decoration: none; transition: background 160ms ease, border-color 160ms ease;
  letter-spacing: -0.005em;
}
.btn-secondary-light:hover { background: rgba(252,252,247,0.08); border-color: var(--color-snow-white); }

.btn-ghost-light {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; color: var(--color-snow-white);
  font-family: var(--font-sans); font-size: 15px; font-weight: 500;
  padding: 14px 0; border: none; cursor: pointer; text-decoration: none;
  border-bottom: 1px solid rgba(252,252,247,0.5);
  transition: opacity 160ms ease, border-color 160ms ease;
}
.btn-ghost-light:hover { opacity: 0.78; border-bottom-color: var(--color-snow-white); }

/* -- Legacy alias (compact, used in nav CTA + pricing-featured) -- */
.btn-pill-light {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-snow-white); color: var(--color-forest-green);
  font-family: var(--font-sans); font-size: 14px; font-weight: 500;
  padding: 10px 18px; border: none; border-radius: var(--radius-button);
  cursor: pointer; text-decoration: none;
}

/* Grade badge */
.grade {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 999px;
  font-family: var(--font-mono); font-weight: 500; font-size: 13px;
  color: white;
}
.grade.a { background: var(--color-grade-a); }
.grade.b { background: var(--color-grade-b); }
.grade.c { background: var(--color-grade-c); }
.grade.d { background: var(--color-grade-d); }

/* dotted leader */
.leader { flex: 1; border-bottom: 1px dotted currentColor; opacity: 0.4; margin: 0 8px; min-width: 12px; }

/* link reset */
a { color: inherit; }