/* Reset, typography, layout primitives. Mobile-first: base rules target
   360px; min-width media queries add complexity upward. */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Inter's contextual alternates fix the "i"/"l" spacing that otherwise
     reads slightly off at UI sizes; tabular figures keep data columns
     from shifting as values change. */
  font-feature-settings: "cv05" 1, "cv11" 1;
}

img, picture, svg, video { max-width: 100%; display: block; }
table { border-collapse: collapse; width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.018em;
  margin: 0 0 var(--space-4);
  color: var(--color-text);
  text-wrap: balance;
}
h1 { font-size: var(--text-2xl); letter-spacing: -0.028em; font-weight: 800; }
h2 { font-size: var(--text-xl); letter-spacing: -0.022em; }
h3 { font-size: var(--text-lg); font-weight: 700; letter-spacing: -0.015em; }
h4 { font-size: var(--text-md); font-weight: 700; letter-spacing: -0.01em; }

@media (min-width: 768px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
}
@media (min-width: 1280px) {
  h1 { font-size: var(--text-4xl); }
}

p { margin: 0 0 var(--space-4); max-width: 65ch; color: var(--color-text); }
p.lede, .hero__lede { color: var(--color-text-muted); font-size: var(--text-md); }

a { color: var(--color-link); text-decoration: underline; text-underline-offset: 0.15em; }
a:hover { color: var(--color-link-hover); }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

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

.skip-link {
  position: absolute; left: var(--space-4); top: -100px;
  background: var(--gm-forest); color: var(--gm-white);
  padding: var(--space-3) var(--space-4); z-index: 1000;
  border-radius: var(--radius-control);
  transition: top var(--duration-base) var(--ease-standard);
}
.skip-link:focus { top: var(--space-4); }

:focus-visible {
  outline: 3px solid var(--gm-signal);
  outline-offset: 2px;
}
a:focus-visible, button:focus-visible { outline-offset: 3px; }

/* --- Layout primitives ------------------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--space-16); }
@media (min-width: 1024px) { .section { padding-block: var(--space-24); } }

.section__caption {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-2);
}

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-control);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard);
}
.btn--primary { background: var(--gm-green); color: var(--gm-white); }
.btn--primary:hover { background: var(--gm-green-2); color: var(--gm-white); }
.btn--ghost { background: transparent; color: var(--gm-green); border-color: var(--color-border); }
.btn--ghost:hover { background: var(--gm-paper); color: var(--gm-green-2); border-color: var(--gm-green-2); }
.btn--ghost-inverse { background: transparent; color: var(--gm-white); border-color: rgba(255,255,255,0.4); }
.btn--ghost-inverse:hover { border-color: var(--gm-white); }
.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--text-md); }
.btn--block { display: flex; width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* --- Forms ------------------------------------------------------------ */
label {
  display: block;
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.006em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

input, select, textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 16px; /* never smaller — prevents iOS zoom on focus */
  line-height: 1.4;
  padding: 11px var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--gm-white);
  color: var(--color-text);
  min-height: 46px;
  transition: border-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard),
              background-color var(--duration-fast) var(--ease-standard);
}
textarea { min-height: 120px; padding-top: var(--space-3); resize: vertical; }

input::placeholder, textarea::placeholder { color: #9AA6A0; }

input:hover:not(:disabled), select:hover:not(:disabled), textarea:hover:not(:disabled) {
  border-color: var(--gm-steel);
}

/* A real focus ring, not just a border tint — this is the state a keyboard
   user navigates by, and the old border-only change was near-invisible. */
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gm-green);
  box-shadow: 0 0 0 3px rgba(30, 122, 77, 0.16);
}
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: none; }

input:disabled, select:disabled, textarea:disabled {
  background: var(--gm-paper);
  color: var(--color-text-muted);
  cursor: not-allowed;
}

input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--color-danger); }
input[aria-invalid="true"]:focus, textarea[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgba(179, 64, 42, 0.16);
}

/* Native select arrow differs per browser/OS; this keeps the control
   consistent with text inputs across the site. */
select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235C6B64' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 8.5L12 15l7-6.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 18px 18px;
  padding-right: var(--space-10);
}

input[type="checkbox"], input[type="radio"] {
  width: 18px;
  height: 18px;
  min-height: 0;
  padding: 0;
  flex-shrink: 0;
  accent-color: var(--gm-green);
  cursor: pointer;
}

.field { margin-bottom: var(--space-5); }
.field__hint { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-2); }
.field__error { font-size: var(--text-xs); color: var(--color-danger); margin-top: var(--space-2); font-weight: 500; }
.field__label-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.field__optional { font-size: var(--text-xs); font-weight: 400; color: var(--color-text-muted); }
form.form--stacked { max-width: 480px; }

/* --- Alerts ------------------------------------------------------------ */
.alert { padding: var(--space-3) var(--space-4); border-left: 3px solid; margin-block: var(--space-4); }
.alert--success { border-color: var(--gm-green); background: var(--gm-green-tint); }
.alert--error { border-color: var(--color-danger); background: #FBEAE6; }

/* --- Status (colour-blind safe: icon + text, never colour alone) ------ */
.status { display: inline-flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); color: var(--color-text-muted); }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--color-text-muted); flex-shrink: 0; }
.status--live { color: var(--gm-signal-ink); font-weight: 600; }
.status--live::before { background: var(--gm-signal); }

/* --- Error pages -------------------------------------------------------- */
.error-page { display: flex; min-height: 100vh; align-items: center; justify-content: center; text-align: center; }
.error-page__content { max-width: 420px; padding: var(--space-8); }
.error-page__brand { display: inline-block; margin-bottom: var(--space-12); }
.error-page__brand img { display: block; height: 36px; width: auto; }
.error-page__code { font-family: var(--font-mono); font-size: var(--text-3xl); color: var(--color-text-muted); margin: 0; }