/* ==========================================================================
   Main styles: layout and components
   Mobile-first. Uses tokens from tokens.css only (no raw colors or sizes).
   Breakpoints (see tokens.css): 48em = --bp-md, 64em = --bp-lg.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
}

@media (min-width: 64em) {
  body {
    font-size: var(--text-md);
  }
}

/* Links in running text: colored and underlined (never color alone). */
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: from-font;
  text-underline-offset: 0.2em;
}

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

/* One focus style for every interactive element. */
:focus-visible {
  outline: var(--focus-width) solid var(--color-focus);
  outline-offset: var(--focus-offset);
}

/* Keep in-page anchor targets clear of the sticky header. */
[id] {
  scroll-margin-top: var(--space-sm);
}

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

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

@media (min-width: 48em) {
  .container {
    max-width: calc(var(--container-max) + 2 * var(--gutter-wide));
    padding-inline: var(--gutter-wide);
  }
}

/* An email address shown as plain, easy-to-select text. */
.email-text {
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Skip link: first focusable element, hidden until focused.
   -------------------------------------------------------------------------- */
.skip-link {
  --color-focus: var(--color-focus-inverse); /* it appears over the dark header */
  position: absolute;
  top: var(--space-2xs);
  left: var(--space-2xs);
  z-index: 100;
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-surface);
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--target-min);
  padding: var(--space-2xs) var(--space-md);
  border: var(--border-width-thick) solid transparent;
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  text-align: center;
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);
}

.button--primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-on-accent);
}

.button--primary:hover {
  background-color: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  color: var(--color-on-accent);
}

.button--secondary {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.button--secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-accent-strong);
  color: var(--color-accent-strong);
}

/* Silver button for dark surfaces (navy would be 1.47:1 on ink). */
.button--inverse {
  background-color: var(--color-silver);
  border-color: var(--color-silver);
  color: var(--color-ink);
}

.button--inverse:hover {
  background-color: var(--color-silver-bright);
  border-color: var(--color-silver-bright);
  color: var(--color-ink);
}

/* Hover adds an underline so the change never relies on color alone. */
.button:hover {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.button--large {
  padding: var(--space-xs) var(--space-lg);
  font-size: var(--text-md);
}

/* ==========================================================================
   SITE HEADER
   ========================================================================== */
/* Dark band matching the logo. Redefining --color-focus here switches every
   focus ring inside the header to the silver that shows on ink. */
.site-header {
  --color-focus: var(--color-focus-inverse);
  background-color: var(--color-ink);
  color: var(--color-silver);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xs) var(--space-sm);
  min-height: var(--header-height);
  padding-block: var(--space-2xs);
}

.site-header__brand {
  display: inline-flex;
  flex: 1 1 0%; /* zero basis: shares the row with the menu button, then wraps its text */
  min-width: 0;
  align-items: center;
  gap: var(--space-xs);
  min-height: var(--target-min);
  color: var(--color-silver-bright);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wordmark);
  text-decoration: none;
  text-transform: uppercase;
}

.site-header__brand:hover {
  color: var(--color-silver-bright);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.site-header__mark {
  width: auto;
  height: var(--logo-mark-size);
}

/* On very narrow screens (or high zoom) the wordmark wraps onto two lines
   rather than pushing the menu button onto its own row. */
.site-header__wordmark {
  min-width: 0;
  line-height: var(--leading-tight);
}

.site-header__mark,
.site-header__toggle {
  flex-shrink: 0;
}

/* Menu button (shown by main.js on small screens only). */
.site-header__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-width: var(--target-min);
  min-height: var(--target-min);
  padding: var(--space-2xs) var(--space-sm);
  background-color: transparent;
  border: var(--border-width-thick) solid var(--color-silver-muted);
  border-radius: var(--radius-md);
  color: var(--color-silver);
  font-weight: var(--weight-semibold);
}

.site-header__toggle:hover {
  border-color: var(--color-silver-bright);
  color: var(--color-silver-bright);
}

.site-header__toggle-icon {
  width: var(--space-md);
  height: var(--space-md);
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

/* The menu takes a full row on small screens. */
.site-header__menu {
  display: flex;
  flex-direction: column;
  flex-basis: 100%;
  gap: var(--space-sm);
  padding-block: var(--space-2xs) var(--space-sm);
}

/* Once main.js has wired up the toggle, the small-screen menu starts
   collapsed. Without JS the menu simply stays visible. */
.site-header--enhanced .site-header__menu:not(.is-open) {
  display: none;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3xs) var(--space-sm);
  list-style: none;
}

/* With JS, the open small-screen menu stacks full-width links. */
.site-header--enhanced .site-nav__list {
  flex-direction: column;
}

.site-nav__link {
  display: flex;
  align-items: center;
  min-height: var(--target-min);
  padding-inline: var(--space-3xs);
  color: var(--color-silver);
  font-weight: var(--weight-semibold);
  text-decoration: none;
}

.site-nav__link:hover {
  color: var(--color-silver-bright);
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.site-header__cta {
  align-self: flex-start;
}

@media (min-width: 64em) { /* --bp-lg: full nav fits beside the wordmark */
  .site-header__inner {
    flex-wrap: nowrap;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__menu,
  .site-header--enhanced .site-header__menu:not(.is-open) {
    display: flex;
    flex-direction: row;
    flex-basis: auto;
    align-items: center;
    gap: var(--space-md);
    padding-block: 0;
  }

  .site-nav__list,
  .site-header--enhanced .site-nav__list {
    flex-direction: row;
    gap: var(--space-md);
  }

  .site-nav__link {
    min-height: var(--target-sm);
  }

  .site-header__cta {
    align-self: auto;
  }
}

/* Sticky only when there is room for it, so at high zoom or on short
   screens the header never hides content or the focused element. */
@media (min-width: 64em) and (min-height: 30em) {
  .site-header {
    position: sticky;
    top: 0;
    z-index: 10;
  }

  [id] {
    scroll-margin-top: calc(var(--header-height) + var(--space-sm));
  }
}

/* --------------------------------------------------------------------------
   Shared section patterns
   -------------------------------------------------------------------------- */
.section {
  padding-block: var(--section-pad);
}

.section--alt {
  background-color: var(--color-surface-alt);
}

@media (min-width: 48em) {
  .section {
    padding-block: var(--section-pad-wide);
  }
}

.eyebrow {
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
}

.section__title {
  max-width: var(--measure);
  font-size: var(--text-xl);
  line-height: var(--leading-tight);
}

@media (min-width: 48em) {
  .section__title {
    font-size: var(--text-2xl);
  }
}

.prose {
  max-width: var(--measure);
  margin-top: var(--space-md);
}

.prose > * + * {
  margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  padding-block: var(--space-2xl) var(--section-pad);
}

@media (min-width: 48em) {
  .hero {
    padding-block: var(--space-3xl);
  }
}

/* The logo image comes first in the DOM but is decorative (alt=""), so
   placing it in the right-hand column changes no reading order. */
.hero__logo {
  display: none;
}

@media (min-width: 48em) {
  .hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--space-lg);
  }

  .hero__logo {
    display: block;
    grid-column: 2;
    grid-row: 1;
    width: var(--logo-full-width-md);
    /* The logo file has a white background; multiply lets the page
       background show through it. */
    mix-blend-mode: multiply;
  }

  .hero__content {
    grid-column: 1;
    grid-row: 1;
  }
}

@media (min-width: 64em) {
  .hero__inner {
    gap: var(--space-xl);
  }

  .hero__logo {
    width: var(--logo-full-width);
  }
}

.hero__title {
  max-width: var(--measure-heading);
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
}

@media (min-width: 64em) {
  .hero__title {
    font-size: var(--text-3xl);
  }
}

.hero__lead {
  max-width: var(--measure);
  margin-top: var(--space-md);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.hero__note {
  max-width: var(--measure);
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   Service cards
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr); /* never wider than the page, even with long words */
  gap: var(--space-md);
  margin-top: var(--space-xl);
  list-style: none;
}

@media (min-width: 64em) {
  .card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg) var(--space-md);
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.card__icon {
  width: var(--icon-size);
  height: var(--icon-size);
  fill: none;
  stroke: var(--color-accent);
  stroke-width: var(--icon-stroke);
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card__title {
  margin-top: var(--space-sm);
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
}

/* One-line question that opens each card. */
.card__hook {
  margin-top: var(--space-2xs);
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
}

/* Monospace filename, sized so "…xlsx?" fits a 320px card on one line.
   The paragraph's overflow-wrap still breaks it if zoom leaves no room. */
.card__filename {
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.card__text {
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
}

.card__list {
  display: grid;
  gap: var(--space-2xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  padding-left: var(--space-md);
  border-top: var(--border-width) solid var(--color-border);
}

.card__list li::marker {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Approach steps
   -------------------------------------------------------------------------- */
.steps {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  list-style: none;
  counter-reset: step;
}

@media (min-width: 48em) {
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-xl) var(--space-lg);
  }
}

.steps__item {
  padding-top: var(--space-md);
  border-top: var(--border-width-thick) solid var(--color-accent);
  counter-increment: step;
}

/* Visual step number; the ordered list already conveys order to assistive tech. */
.steps__item::before {
  content: counter(step, decimal-leading-zero);
  content: counter(step, decimal-leading-zero) / "";
  display: block;
  margin-bottom: var(--space-2xs);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-eyebrow);
}

.steps__title {
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
}

.steps__text {
  max-width: var(--measure);
  margin-top: var(--space-2xs);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.contact__text {
  max-width: var(--measure);
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}

.contact__button {
  margin-top: var(--space-lg);
}

.contact__note {
  max-width: var(--measure);
  margin-top: var(--space-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.contact__address {
  margin-top: var(--space-3xs);
  font-size: var(--text-lg);
}

/* ==========================================================================
   SITE FOOTER
   ========================================================================== */
/* Dark band matching the header; focus rings switch to silver. */
.site-footer {
  --color-focus: var(--color-focus-inverse);
  padding-block: var(--space-xl);
  background-color: var(--color-ink);
  color: var(--color-silver-muted);
  font-size: var(--text-sm);
}

.site-footer__inner {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 48em) {
  .site-footer__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  }

  .site-footer__legal {
    grid-column: 1 / -1;
  }
}

.site-footer__wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
  color: var(--color-silver-bright);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wordmark);
  text-transform: uppercase;
}

.site-footer__mark {
  width: auto;
  height: var(--logo-mark-size);
}

.site-footer__link {
  color: var(--color-silver);
}

.site-footer__link:hover {
  color: var(--color-silver-bright);
}

.site-footer__heading {
  margin-bottom: var(--space-2xs);
  color: var(--color-silver-bright);
  font-size: var(--text-base);
}

.site-footer__text {
  max-width: var(--measure);
}

.site-footer__legal {
  padding-top: var(--space-md);
  border-top: var(--border-width) solid var(--color-border-inverse);
}

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