/* ============================================================
   ET CPA — Design System
   Clean & professional: warm paper surfaces, ink-navy text,
   single brass accent. Fraunces display + DM Sans body.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing (4px base) */
  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-5: 1.25rem;  --space-6: 1.5rem;
  --space-8: 2rem;     --space-10: 2.5rem;  --space-12: 3rem;
  --space-16: 4rem;    --space-20: 5rem;    --space-24: 6rem;

  /* Palette — warm paper / ink navy / brass */
  --color-bg: #f8f6f1;
  --color-surface: #fdfcf9;
  --color-surface-offset: #f1ede4;
  --color-surface-navy: #1b2a3a;
  --color-surface-navy-deep: #14202d;
  --color-divider: #e3ded4;
  --color-border: #d8d2c6;

  --color-text: #1e2833;
  --color-text-muted: #5b6470;
  --color-text-faint: #646c77;
  --color-text-inverse: #f6f4ee;
  --color-text-inverse-muted: #b9c2cd;

  --color-primary: #825c26;          /* brass */
  --color-primary-hover: #6e4b1e;
  --color-primary-soft: #efe4d3;
  --color-accent-ink: #1b2a3a;       /* navy for buttons/links */

  --color-accent-ink-hover: #14202d;

  /* Radius / shadow / motion */
  --radius-sm: 0.375rem;  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;   --radius-xl: 1rem; --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(20, 32, 45, 0.06);
  --shadow-md: 0 4px 14px rgba(20, 32, 45, 0.08);
  --shadow-lg: 0 14px 36px rgba(20, 32, 45, 0.13);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1160px;

  /* Fonts */
  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none; text-size-adjust: none;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); font-weight: 560; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection { background: rgba(154, 107, 47, 0.22); color: var(--color-text); }

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button { cursor: pointer; background: none; border: none; }

a, button, input, textarea, select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section { padding-block: clamp(var(--space-12), 6vw, var(--space-24)); }
.section--tight { padding-block: clamp(var(--space-10), 5vw, var(--space-16)); }
.section--offset { background: var(--color-surface-offset); }

.eyebrow {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-title { font-size: var(--text-xl); max-width: 22ch; }
.section-lead { color: var(--color-text-muted); margin-top: var(--space-4); }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248, 246, 241, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}
.header__inner {
  max-width: var(--content-wide);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.brand {
  display: grid; gap: var(--space-1);
  text-decoration: none; color: var(--color-text);
  white-space: nowrap;
}
.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 0.9rem + 0.5vw, 1.35rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
}
.brand__cred {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  line-height: 1.4;
}

.nav { display: none; }
.nav__list { display: flex; gap: clamp(var(--space-4), 1.6vw, var(--space-8)); align-items: center; }
.nav__link {
  font-size: var(--text-sm); font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
}
.nav__link:hover, .nav__link[aria-current="page"] { color: var(--color-text); }
.nav__link[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-color: var(--color-primary); }

.header .header__cta { display: none; }

@media (min-width: 900px) {
  .header .nav { display: flex; }
  .header .nav-toggle { display: none; }
}
@media (min-width: 1280px) {
  .header .header__cta { display: flex; }
}

/* Mobile nav */
.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  color: var(--color-text);
}
.nav-toggle:active { background: var(--color-surface-offset); }

.mobile-nav {
  display: grid;
  grid-template-rows: 0fr;
  overflow: hidden;
  transition: grid-template-rows 260ms cubic-bezier(0.16, 1, 0.3, 1);
}
.mobile-nav--open { grid-template-rows: 1fr; }
.mobile-nav__inner { overflow: hidden; }
.mobile-nav__list { padding: var(--space-4) var(--space-6) var(--space-6); display: grid; gap: var(--space-2); }
.mobile-nav__link {
  display: block; padding: var(--space-3) var(--space-2);
  font-size: var(--text-base); font-weight: 500;
  color: var(--color-text); text-decoration: none;
  border-radius: var(--radius-sm);
}
.mobile-nav__link:active { background: var(--color-surface-offset); }

/* Section navigation: overview links remain separate from disclosure controls. */
.nav-dropdown { position: relative; }
.nav-dropdown__top { display: flex; align-items: center; gap: 2px; }
.nav-dropdown__toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 36px; flex-shrink: 0;
  color: var(--color-text-muted); border-radius: var(--radius-sm);
}
.nav-dropdown__toggle:hover,
.nav-dropdown__toggle[aria-expanded="true"] { background: var(--color-primary-soft); color: var(--color-text); }
.nav-dropdown__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.nav-dropdown__panel[hidden] { display: none !important; }
.nav-dropdown__panel {
  position: absolute; top: 100%; left: -16px;
  width: 350px; padding: var(--space-3);
  border: 1px solid var(--color-divider);
  border-top: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: 0 16px 40px rgba(27, 42, 58, 0.13);
  max-height: calc(100dvh - 110px); overflow-y: auto;
  list-style: none;
}
.nav-dropdown__panel a {
  display: block; padding: 11px 12px;
  color: var(--color-text); text-decoration: none;
  font-size: var(--text-sm); font-weight: 500; line-height: 1.45;
  border-radius: var(--radius-sm);
}
.nav-dropdown__panel a:hover,
.nav-dropdown__panel a:focus-visible,
.nav-dropdown__panel a[aria-current="location"] { background: var(--color-primary-soft); }
.nav-dropdown__panel .nav-dropdown__overview {
  color: var(--color-primary-hover);
  border-bottom: 1px solid var(--color-divider);
  border-radius: 0; margin-bottom: var(--space-2); padding-bottom: var(--space-3);
}
.nav .nav-dropdown--industries .nav-dropdown__panel { left: auto; right: 0; }
.mobile-nav { transition: none; }
.mobile-nav__inner { max-height: calc(100dvh - 90px); overflow-y: auto; overscroll-behavior: contain; }
.mobile-nav .nav-dropdown__top { justify-content: space-between; }
.mobile-nav .nav-dropdown__top > a { flex: 1; }
.mobile-nav .nav-dropdown__toggle { width: 44px; height: 44px; }
.mobile-nav .nav-dropdown__panel {
  position: static; width: auto; max-height: none; overflow: visible;
  margin: 0 var(--space-2) var(--space-3);
  padding: 0 0 0 var(--space-3); box-shadow: none;
  border: 0; border-left: 2px solid var(--color-primary); border-radius: 0;
  background: transparent;
}
.service-row[id], .industry-card[id] { scroll-margin-top: var(--space-6); }
@media (min-width: 900px) {
  .mobile-nav { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600;
  text-decoration: none;
  min-height: 44px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-accent-ink);
  color: var(--color-text-inverse);
}
.btn--primary:hover { background: var(--color-accent-ink-hover); }
.btn--primary:active { transform: translateY(1px); }
.btn--outline {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--light {
  background: var(--color-text-inverse);
  color: var(--color-accent-ink);
}
.btn--light:hover { background: #ffffff; }
.btn--ghost-light {
  border-color: rgba(246, 244, 238, 0.4);
  color: var(--color-text-inverse);
}
.btn--ghost-light:hover { border-color: var(--color-text-inverse); }

/* ---------- Hero (home) ---------- */
.hero { position: relative; }
.hero__media { position: relative; }
.hero__media img {
  width: 100%;
  max-height: min(64vh, 600px);
  object-fit: cover;
  object-position: center top;
}
.hero__content {
  position: relative;
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}
.hero__heading {
  font-size: var(--text-3xl);
  max-width: 16ch;
  color: var(--color-text);
}
.hero__sub {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
}
.hero__actions {
  margin-top: var(--space-8);
  display: flex; flex-wrap: wrap; gap: var(--space-4);
}
.hero__badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.hero__badge::before {
  content: ""; width: 28px; height: 1px; background: var(--color-primary);
}

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: var(--space-6); }
@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: var(--space-3);
}
.card:hover { box-shadow: var(--shadow-md); }
.card__num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 600;
}
.card__title { font-size: var(--text-lg); }
.card__service-image {
  width: 100%;
  height: 128px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.card__text { font-size: var(--text-base); color: var(--color-text-muted); }

/* ---------- Split feature ---------- */
.industry-grid { margin-top: var(--space-10); }
.industry-card { box-shadow: none; }
.industry-card:hover { box-shadow: none; }
.industry-list {
  padding-left: var(--space-5);
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}
.industry-list li { padding-block: var(--space-1); }
.industry-list li::marker { color: var(--color-primary); }
@media (min-width: 640px) {
  .industry-card--wide { grid-column: 1 / -1; }
  .industry-card--wide .industry-list {
    columns: 2;
    column-gap: var(--space-8);
  }
  .industry-card--wide .industry-list li { break-inside: avoid; }
}

.split {
  display: grid; gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}
@media (min-width: 960px) {
  .split { grid-template-columns: 1fr 1fr; }
  .split--flip > .split__media { order: 2; }
}
.split__media img {
  border-radius: var(--radius-lg);
  width: 100%;
  box-shadow: var(--shadow-lg);
}
.split__body { display: grid; gap: var(--space-4); }

.check-list { display: grid; gap: var(--space-3); margin-top: var(--space-4); }
.check-list li {
  display: flex; gap: var(--space-3); align-items: flex-start;
  color: var(--color-text-muted);
}
.check-list svg {
  flex-shrink: 0;
  margin-top: 0.28em;
  color: var(--color-primary);
}

/* ---------- Full-bleed image band ---------- */
.band {
  position: relative;
  color: var(--color-text-inverse);
}
.band img { width: 100%; height: clamp(320px, 45vw, 480px); object-fit: cover; }
.band__overlay {
  position: absolute; inset: 0;
  display: flex; align-items: flex-end;
  background: linear-gradient(to top, rgba(20, 32, 45, 0.72), rgba(20, 32, 45, 0.08) 65%);
  padding: var(--space-8) var(--space-6);
}
.band__quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  max-width: 30ch;
  color: var(--color-text-inverse);
}

/* ---------- Testimonials ---------- */
.quote-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: grid; gap: var(--space-4);
  align-content: start;
}
/* Client statements stay readable immediately, without a reveal delay. */
.quote-card.reveal { opacity: 1; transform: none; transition: none; }
.quote-card__stars { color: var(--color-primary); letter-spacing: 0.15em; font-size: var(--text-sm); }
.quote-card__text { font-size: var(--text-base); color: var(--color-text); }
.quote-card__who { font-size: var(--text-sm); color: var(--color-text-muted); }
.quote-card__who strong { color: var(--color-text); font-weight: 600; }
.quote-card__who span { display: block; margin-top: var(--space-1); }
.testimonials-grid { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 760px) {
  .testimonials-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.testimonials-grid .quote-card { grid-template-rows: 1fr auto; }

/* ---------- CTA band ---------- */
.cta {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(154, 107, 47, 0.28), transparent 60%),
    var(--color-surface-navy);
  color: var(--color-text-inverse);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 5vw, var(--space-16));
}
.cta__title { font-size: var(--text-2xl); max-width: 20ch; color: var(--color-text-inverse); }
.cta__text { color: var(--color-text-inverse-muted); margin-top: var(--space-4); max-width: 56ch; }
.cta__actions { margin-top: var(--space-8); display: flex; flex-wrap: wrap; gap: var(--space-4); }

/* ---------- Page hero (interior) ---------- */
.page-hero {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.page-hero h1 { font-size: var(--text-2xl); max-width: 20ch; }
.page-hero--about h1 { max-width: none; }
.page-hero .section-lead { max-width: 60ch; }

/* ---------- Prose ---------- */
.prose { display: grid; gap: var(--space-4); max-width: 68ch; }
.prose p { color: var(--color-text-muted); }
.prose h2 { font-size: var(--text-xl); margin-top: var(--space-6); }
.prose h3 { font-size: var(--text-lg); margin-top: var(--space-4); }

/* ---------- Service rows (services page) ---------- */
.service-commitments {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.service-commitments h2 { font-size: var(--text-lg); max-width: 36ch; }
.service-commitments__list {
  display: grid;
  gap: var(--space-5) var(--space-10);
  margin-top: var(--space-6);
  color: var(--color-text-muted);
}
.service-commitments__list strong { color: var(--color-text); }
@media (min-width: 700px) {
  .service-commitments__list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.service-row {
  display: grid; gap: var(--space-4);
  padding-block: var(--space-10);
  border-bottom: 1px solid var(--color-divider);
}
.service-row:last-child { border-bottom: none; }
.service-row__image {
  width: 128px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-md);
}
@media (min-width: 768px) {
  .service-row { grid-template-columns: minmax(0, 1fr) 176px; column-gap: var(--space-8); }
  .service-row > :not(.service-row__image) { grid-column: 1; }
  .service-row__image { grid-column: 2; grid-row: 1 / span 3; width: 176px; height: 132px; }
}
.service-row__index {
  font-family: var(--font-display);
  color: var(--color-primary);
  font-weight: 600;
  font-size: var(--text-sm);
}
.service-row__title { font-size: var(--text-lg); }
.service-row__text { color: var(--color-text-muted); }
.service-row__tags {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  margin-top: var(--space-3);
}
.tag {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
}

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-10); }
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-16); }
}

.contact-list { display: grid; gap: var(--space-6); }
.contact-item { display: grid; gap: var(--space-1); }
.contact-item__label {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-text-faint);
}
.contact-item__value { font-weight: 500; }
.contact-item a { color: var(--color-text); text-decoration-color: var(--color-primary); text-underline-offset: 4px; }

.form { display: grid; gap: var(--space-5); }
.form__row { display: grid; gap: var(--space-5); }
@media (min-width: 640px) { .form__row { grid-template-columns: 1fr 1fr; } }
.field { display: grid; gap: var(--space-2); }
.field label { font-size: var(--text-sm); font-weight: 500; }
.field input, .field textarea, .field select {
  min-width: 0;
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
  font-size: var(--text-base);
}
.field textarea { resize: vertical; min-height: 140px; }
.field input:focus-visible, .field textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-color: var(--color-primary);
}
.form__note { font-size: var(--text-xs); color: var(--color-text-faint); }
.form__status {
  display: none;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
  padding: var(--space-4);
  font-size: var(--text-sm);
}
.form__status--show { display: block; }

/* ---------- Footer ---------- */
.footer {
  --color-text-faint: #9aa1ab; /* lighter tone for dark surfaces */
  background: var(--color-surface-navy-deep);
  color: var(--color-text-inverse-muted);
  padding-block: var(--space-16) var(--space-8);
  margin-top: var(--space-16);
}
.footer a { color: var(--color-text-inverse-muted); text-decoration: none; }
.footer a:hover { color: var(--color-text-inverse); }
.footer__grid {
  display: grid; gap: var(--space-10);
  grid-template-columns: 1fr;
}
@media (min-width: 800px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr; }
}
.footer__brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text-inverse);
  font-weight: 600;
}
.footer__tagline { margin-top: var(--space-3); max-width: 36ch; }
.footer__principal {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-inverse-muted);
}
.footer__heading {
  font-size: var(--text-xs); font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.footer__list { display: grid; gap: var(--space-3); font-size: var(--text-sm); }
.footer__bottom {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(246, 244, 238, 0.12);
  display: flex; flex-wrap: wrap; gap: var(--space-4);
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ---------- Reveal animation (progressive enhancement) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal--in { opacity: 1; transform: none; }
}