/* ==========================================================================
   FirmLedge — homepage stylesheet (Phase 1)
   Self-contained: index.html links ONLY this file (not styles.css).
   Palette: deep slate/navy ink + muted brass accent on warm-cool paper.
   No JavaScript dependency — CSS-only polish.
   ========================================================================== */

:root {
  /* paper + ink */
  --fl-paper: #f7f5ef;
  --fl-paper-raised: #fffdf7;
  --fl-paper-recessed: #efece2;
  --fl-ink: #1b2a3a;
  --fl-ink-deep: #11202e;
  --fl-ink-muted: #4a5a6a;
  --fl-ink-faint: #6f7d8c;
  --fl-rule: #e3ded2;
  --fl-rule-strong: #cdc6b4;

  /* accent = muted brass (single swappable var) */
  --fl-accent: #7d5524;
  --fl-accent-deep: #5f3f18;
  --fl-accent-soft: #f1e9dc;
  --fl-accent-line: #d9c9ad;

  /* type */
  --fl-font-serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --fl-font-sans: Inter, "Helvetica Neue", Arial, sans-serif;
  --fl-font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --fl-text-display: clamp(2.4rem, 5vw, 4rem);
  --fl-text-h2: clamp(1.7rem, 3vw, 2.4rem);
  --fl-text-h3: 1.2rem;
  --fl-text-body: 1.0625rem;
  --fl-text-small: 0.9375rem;
  --fl-text-spec: 0.6875rem;

  /* space */
  --fl-space-xs: 0.5rem;
  --fl-space-sm: 0.75rem;
  --fl-space-md: 1rem;
  --fl-space-lg: 1.5rem;
  --fl-space-xl: 2rem;
  --fl-space-2xl: 3rem;
  --fl-space-3xl: 4rem;
  --fl-space-4xl: 6rem;

  /* structure + motion */
  --fl-container: 1120px;
  --fl-radius: 3px;
  --fl-shadow: 0 1px 2px rgb(27 42 58 / 5%), 0 10px 28px rgb(27 42 58 / 7%);
  --fl-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --fl-dur-base: 250ms;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--fl-paper);
  color: var(--fl-ink);
  font-family: var(--fl-font-sans);
  font-size: var(--fl-text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  overflow-x: clip;
}

a {
  color: var(--fl-accent);
  text-decoration: none;
}

a:hover {
  color: var(--fl-accent-deep);
}

:focus-visible {
  outline: 2px solid var(--fl-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---- primitives ---------------------------------------------------------- */

.fl-container {
  width: 100%;
  max-width: var(--fl-container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.fl-spec {
  display: inline-block;
  font-family: var(--fl-font-mono);
  font-size: var(--fl-text-spec);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fl-ink-muted);
}

.fl-spec--faint {
  color: var(--fl-ink-faint);
}

.fl-spec--accent {
  color: var(--fl-accent);
}

.fl-rule {
  border: 0;
  border-top: 1px solid var(--fl-rule);
  margin: 0.85rem 0 1.1rem;
}

.fl-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--fl-ink);
  color: var(--fl-paper);
  border-radius: var(--fl-radius);
}

.fl-skip:focus {
  left: 1rem;
  top: 1rem;
  color: var(--fl-paper);
}

/* ---- buttons ------------------------------------------------------------- */

.fl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 46px;
  padding: 0.7rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--fl-radius);
  font-family: var(--fl-font-sans);
  font-size: var(--fl-text-small);
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  cursor: pointer;
  transition: background var(--fl-dur-base) var(--fl-ease),
    border-color var(--fl-dur-base) var(--fl-ease),
    color var(--fl-dur-base) var(--fl-ease);
}

.fl-btn--accent {
  background: var(--fl-accent);
  border-color: var(--fl-accent);
  color: #ffffff;
}

.fl-btn--accent:hover {
  background: var(--fl-accent-deep);
  border-color: var(--fl-accent-deep);
  color: #ffffff;
}

.fl-btn--primary {
  background: var(--fl-ink);
  border-color: var(--fl-ink);
  color: var(--fl-paper);
}

.fl-btn--primary:hover {
  background: var(--fl-ink-deep);
  border-color: var(--fl-ink-deep);
  color: var(--fl-paper);
}

.fl-btn--secondary {
  background: transparent;
  border-color: var(--fl-rule-strong);
  color: var(--fl-ink);
}

.fl-btn--secondary:hover {
  border-color: var(--fl-ink);
  color: var(--fl-ink);
}

/* ---- header / nav -------------------------------------------------------- */

.fl-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--fl-paper);
  border-bottom: 1px solid var(--fl-rule);
}

.fl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 68px;
}

.fl-brand {
  font-family: var(--fl-font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fl-ink);
}

.fl-brand:hover {
  color: var(--fl-ink);
}

.fl-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
}

.fl-nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fl-ink-muted);
}

.fl-nav__link:hover {
  color: var(--fl-accent);
}

.fl-header__cta {
  display: inline-flex;
}

/* ---- hero ---------------------------------------------------------------- */

.fl-hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(1.5rem, 3vw, 2.5rem);
}

.fl-hero__panel {
  background: var(--fl-paper-raised);
  border: 1px solid var(--fl-accent-line);
  border-radius: var(--fl-radius);
  box-shadow: var(--fl-shadow);
  padding: clamp(1.75rem, 4vw, 3rem);
}

.fl-hero__title {
  font-family: var(--fl-font-serif);
  font-size: var(--fl-text-display);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fl-ink);
  margin: 0.7rem 0 0;
  max-width: 20ch;
  text-wrap: balance;
}

.fl-hero__dek {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--fl-ink-muted);
  margin: 1.1rem 0 0;
  max-width: 62ch;
}

.fl-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.fl-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--fl-accent-line);
  border-radius: 999px;
  background: var(--fl-accent-soft);
  color: var(--fl-accent);
  font-family: var(--fl-font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.2;
}

.fl-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.6rem 0 0;
}

.fl-hero__cred {
  margin: 1.4rem 0 0;
  line-height: 1.6;
}

/* ---- section scaffold ---------------------------------------------------- */

.fl-section {
  padding: clamp(2.75rem, 6vw, 4.5rem) 0 0;
  scroll-margin-top: 84px;
}

.fl-section__title {
  font-family: var(--fl-font-serif);
  font-size: var(--fl-text-h2);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--fl-ink);
  margin: 0;
  max-width: 26ch;
}

.fl-section__intro {
  font-size: var(--fl-text-body);
  line-height: 1.65;
  color: var(--fl-ink-muted);
  margin: 0.9rem 0 0;
  max-width: 72ch;
}

.fl-note {
  margin: 1.1rem 0 0;
  line-height: 1.6;
}

/* ---- metrics strip ------------------------------------------------------- */

.fl-metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 1.6rem;
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
  background: var(--fl-paper-raised);
  overflow: hidden;
}

.fl-metrics__item {
  padding: 1.3rem 1.2rem;
  border-left: 1px solid var(--fl-rule);
}

.fl-metrics__item:first-child {
  border-left: 0;
}

.fl-metrics__num {
  display: block;
  font-family: var(--fl-font-mono);
  font-size: 1.65rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fl-ink);
}

.fl-metrics__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--fl-ink-muted);
}

/* ---- card grid (audience / services / sectors) -------------------------- */

.fl-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}

.fl-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.4rem;
  background: var(--fl-paper-raised);
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
  transition: border-color var(--fl-dur-base) var(--fl-ease),
    box-shadow var(--fl-dur-base) var(--fl-ease);
}

.fl-card:hover {
  border-color: var(--fl-rule-strong);
  box-shadow: var(--fl-shadow);
}

.fl-card__label {
  font-family: var(--fl-font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fl-ink-faint);
}

.fl-card__title {
  font-family: var(--fl-font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--fl-ink);
  margin: 0;
}

.fl-card__body {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--fl-ink-muted);
  margin: 0;
}

.fl-card__list {
  list-style: none;
  margin: 0.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.fl-card__list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--fl-ink-muted);
}

.fl-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 0.5rem;
  height: 1px;
  background: var(--fl-accent);
}

/* ---- inline CTA under a grid -------------------------------------------- */

.fl-inline-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1.4rem;
  font-size: 0.95rem;
  color: var(--fl-ink-muted);
}

/* ---- process steps ------------------------------------------------------- */

.fl-process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}

.fl-step {
  padding: 1.25rem;
  background: var(--fl-paper-raised);
  border: 1px solid var(--fl-rule);
  border-top: 2px solid var(--fl-accent);
  border-radius: var(--fl-radius);
}

.fl-step__no {
  font-family: var(--fl-font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--fl-accent);
}

.fl-step__title {
  font-family: var(--fl-font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--fl-ink);
  margin: 0.5rem 0 0;
}

.fl-step__body {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--fl-ink-muted);
  margin: 0.45rem 0 0;
}

/* ---- engagement formats list -------------------------------------------- */

.fl-formats {
  margin-top: 1.6rem;
  border-top: 1px solid var(--fl-rule);
}

.fl-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1.5rem;
  align-items: baseline;
  padding: 1rem 0.25rem;
  border-bottom: 1px solid var(--fl-rule);
}

.fl-row__title {
  flex: 1 1 18rem;
  font-family: var(--fl-font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fl-ink);
}

.fl-row__meta {
  flex: 2 1 26rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--fl-ink-muted);
}

/* ---- boundaries ---------------------------------------------------------- */

.fl-boundary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.6rem;
}

.fl-boundary__panel {
  padding: 1.5rem;
  background: var(--fl-paper-raised);
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
}

.fl-boundary__panel--is {
  border-top: 2px solid var(--fl-accent);
}

.fl-boundary__panel--isnot {
  border-top: 2px solid var(--fl-rule-strong);
}

.fl-boundary__title {
  font-family: var(--fl-font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fl-ink-muted);
  margin: 0 0 0.9rem;
}

.fl-boundary__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.fl-boundary__list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--fl-ink-muted);
}

.fl-boundary__list--is li::before {
  content: "\2713"; /* check */
  position: absolute;
  left: 0;
  top: 0;
  color: var(--fl-accent);
  font-weight: 600;
}

.fl-boundary__list--isnot li::before {
  content: "\2014"; /* em dash */
  position: absolute;
  left: 0;
  top: 0;
  color: var(--fl-ink-faint);
}

.fl-callout {
  margin-top: 1rem;
  padding: 1.1rem 1.3rem;
  background: var(--fl-paper-recessed);
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--fl-ink-muted);
}

/* ---- founder ------------------------------------------------------------- */

.fl-founder {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: start;
  margin-top: 1.6rem;
  padding: 1.7rem;
  background: var(--fl-paper-raised);
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
}

.fl-founder__mono {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  border-radius: var(--fl-radius);
  background: var(--fl-ink);
  color: var(--fl-paper);
  font-family: var(--fl-font-serif);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.fl-founder__name {
  font-family: var(--fl-font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--fl-ink);
  margin: 0;
}

.fl-founder__role {
  font-family: var(--fl-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fl-ink-muted);
  margin: 0.35rem 0 0;
}

.fl-founder__bio {
  font-size: 0.97rem;
  line-height: 1.65;
  color: var(--fl-ink-muted);
  margin: 0.9rem 0 0;
}

.fl-founder__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.fl-founder__chips li {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.65rem;
  border: 1px solid var(--fl-rule-strong);
  border-radius: 999px;
  font-family: var(--fl-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fl-ink-muted);
}

.fl-founder__note {
  margin: 1rem 0 0;
  line-height: 1.6;
}

/* ---- final CTA ----------------------------------------------------------- */

.fl-section--cta {
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.fl-cta {
  max-width: 48rem;
  margin-inline: auto;
  text-align: center;
}

.fl-cta .fl-section__title {
  margin-inline: auto;
}

.fl-cta__lead {
  font-size: var(--fl-text-body);
  line-height: 1.65;
  color: var(--fl-ink-muted);
  margin: 1rem auto 0;
  max-width: 52ch;
}

.fl-cta__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.6rem;
}

.fl-cta__micro {
  margin: 1.1rem auto 0;
  max-width: 54ch;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--fl-ink-faint);
}

/* ---- footer -------------------------------------------------------------- */

.fl-footer {
  margin-top: clamp(2.5rem, 6vw, 4rem);
  border-top: 1px solid var(--fl-rule);
  background: var(--fl-paper);
  padding: 2rem 0 2.5rem;
}

.fl-footer__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
  font-size: 0.85rem;
  color: var(--fl-ink-muted);
}

.fl-footer__row > * + *::before {
  content: "\00b7";
  margin-right: 1.2rem;
  color: var(--fl-rule-strong);
}

.fl-footer__link {
  color: var(--fl-accent);
}

.fl-footer__link:hover {
  color: var(--fl-accent-deep);
}

.fl-footer__disclaimer {
  margin: 1.1rem 0 0;
  max-width: 92ch;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--fl-ink-faint);
}

.fl-footer__note {
  margin: 0.65rem 0 0;
  max-width: 92ch;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--fl-ink-faint);
}

.fl-footer__legal {
  margin: 1.1rem 0 0;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  .fl-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .fl-metrics__item:nth-child(odd) {
    border-left: 0;
  }

  .fl-metrics__item:nth-child(even) {
    border-left: 1px solid var(--fl-rule);
  }

  .fl-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .fl-process {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .fl-nav {
    display: none;
  }

  .fl-card-grid,
  .fl-process,
  .fl-boundary {
    grid-template-columns: 1fr;
  }

  .fl-metrics {
    grid-template-columns: 1fr;
  }

  .fl-metrics__item {
    border-left: 0;
    border-top: 1px solid var(--fl-rule);
  }

  .fl-metrics__item:first-child {
    border-top: 0;
  }

  .fl-hero__actions .fl-btn,
  .fl-cta__actions .fl-btn {
    width: 100%;
  }

  .fl-founder {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Phase 2 additions — shared across services / about / contact / legal pages
   ========================================================================== */

/* footer nav */
.fl-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin: 1.1rem 0 0;
}

.fl-footer__nav a {
  font-size: 0.85rem;
}

/* active nav link */
.fl-nav__link[aria-current="page"] {
  color: var(--fl-ink);
  font-weight: 600;
}

/* subpage hero */
.fl-pagehero {
  padding: clamp(2.25rem, 5vw, 3.75rem) 0 0;
}

.fl-pagehero__title {
  font-family: var(--fl-font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--fl-ink);
  margin: 0.7rem 0 0;
  max-width: 24ch;
  text-wrap: balance;
}

.fl-pagehero__intro {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--fl-ink-muted);
  margin: 1rem 0 0;
  max-width: 72ch;
}

/* two-up grid (services) */
.fl-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.6rem;
}

/* service card extras */
.fl-card--service {
  border-top: 2px solid var(--fl-accent);
}

.fl-card__when {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--fl-ink-muted);
  margin: 0;
}

.fl-card__when b {
  color: var(--fl-ink);
  font-weight: 600;
}

.fl-card__list--cols {
  columns: 2;
  column-gap: 1.25rem;
}

.fl-card__list--cols li {
  break-inside: avoid;
}

/* stat grid (about) */
.fl-statgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin-top: 1.6rem;
  border: 1px solid var(--fl-rule);
  border-radius: var(--fl-radius);
  background: var(--fl-rule);
  overflow: hidden;
}

.fl-statgrid > div {
  background: var(--fl-paper-raised);
  padding: 1.15rem 1.2rem;
}

/* generic chip group */
.fl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

/* prose (terms / privacy) */
.fl-prose {
  max-width: 74ch;
  margin-top: 1.6rem;
}

.fl-prose h2 {
  font-family: var(--fl-font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--fl-ink);
  margin: 2rem 0 0.4rem;
}

.fl-prose p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--fl-ink-muted);
  margin: 0.55rem 0;
}

.fl-prose ul {
  margin: 0.55rem 0;
  padding-left: 1.25rem;
  color: var(--fl-ink-muted);
  line-height: 1.7;
}

.fl-prose li {
  margin: 0.3rem 0;
}

.fl-prose a {
  color: var(--fl-accent);
}

.fl-prose__effective {
  margin-top: 0.5rem;
}

/* contact specifics */
.fl-contact-email {
  font-family: var(--fl-font-mono);
  font-size: 1.05rem;
  color: var(--fl-ink);
  margin: 1.2rem 0 0;
}

.fl-contact-email a {
  color: var(--fl-accent);
}

@media (max-width: 640px) {
  .fl-grid-2 {
    grid-template-columns: 1fr;
  }

  .fl-card__list--cols {
    columns: 1;
  }
}