/* =========================================================
   MURTWEB — Components
   ========================================================= */

/* ---- Wordmark --------------------------------------------------- */

.wordmark {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}
.wordmark__name {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  color: var(--color-ink-strong);
  display: flex;
  align-items: baseline;
  gap: 0.4em;
}
.wordmark__tag {
  font-family: var(--font-mono);
  font-size: 0.55em;
  font-style: normal;
  color: var(--color-accent);
  letter-spacing: 0.08em;
}
.wordmark__rule {
  width: 2.4rem;
  height: 1px;
  background: var(--color-accent);
}
.section--inverse .wordmark__name { color: var(--color-inverse-text); }

/* ---- Site header -------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(21, 22, 26, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: var(--border-hair);
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-sm);
  gap: var(--space-md);
}

.site-nav { display: none; }
@media (min-width: 62rem) {
  .site-nav { display: flex; align-items: center; gap: var(--space-lg); }
}
.site-nav__list { display: flex; align-items: center; gap: var(--space-lg); }
.site-nav__link {
  position: relative;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding-block: 4px;
}
.site-nav__link::after {
  content: "";
  position: absolute; left: 0; bottom: -3px;
  width: 100%; height: 1px; background: var(--color-accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-precise);
}
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--color-ink-strong); }

.site-header__actions { display: flex; align-items: center; gap: var(--space-md); }

.site-header__actions .btn--ghost { display: none; }
@media (min-width: 62rem) {
  .site-header__actions .btn--ghost { display: inline-flex; }
}

/* buttons */

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  padding: 0.95em 1.5em;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-precise),
              color var(--duration-fast) var(--ease-precise),
              border-color var(--duration-fast) var(--ease-precise);
}
.btn--primary { background: var(--color-accent); color: var(--color-bg); }
.btn--primary:hover { background: var(--color-accent-strong); }
.btn--ghost { border-color: var(--color-border-strong); color: var(--color-ink-strong); }
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn--on-light { background: var(--color-inverse-text); color: var(--color-inverse-bg); }
.btn--on-light:hover { background: var(--color-accent-on-light); color: var(--color-inverse-bg); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.text-link {
  position: relative;
  display: inline-flex; align-items: center; gap: var(--space-2xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--color-ink-strong);
  border-bottom: 1px solid var(--color-border-strong);
  padding-bottom: 3px;
}
.text-link:hover { border-color: var(--color-accent); color: var(--color-accent); }
.text-link__arrow { transition: transform var(--duration-fast) var(--ease-precise); }
.text-link:hover .text-link__arrow { transform: translateX(3px); }

.section--inverse .text-link { color: var(--color-inverse-text); border-color: var(--color-inverse-border); }
.section--inverse .text-link:hover { color: var(--color-accent-on-light); border-color: var(--color-accent-on-light); }

/* nav toggle */

.nav-toggle {
  display: flex; align-items: center; gap: var(--space-2xs);
  font-family: var(--font-mono); font-size: var(--text-2xs);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-ink-strong);
  padding: var(--space-2xs);
}
@media (min-width: 62rem) { .nav-toggle { display: none; } }
.nav-toggle__bars { display: flex; flex-direction: column; gap: 4px; width: 18px; }
.nav-toggle__bars span {
  height: 1px; background: currentColor; display: block;
  transition: transform var(--duration-fast) var(--ease-precise), opacity var(--duration-fast) var(--ease-precise);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* mobile menu — inverted to the light editorial surface, opposite of the dark site body */

.mobile-menu {
  position: fixed; inset: 0; z-index: 200;
  background: var(--color-inverse-bg);
  color: var(--color-inverse-text);
  display: flex; flex-direction: column;
  padding: var(--space-sm) var(--section-pad-x) var(--space-xl);
  transform: translateY(-100%);
  transition: transform var(--duration-base) var(--ease-precise);
  visibility: hidden;
}
.mobile-menu.is-open { transform: translateY(0); visibility: visible; }
@media (min-width: 62rem) { .mobile-menu { display: none; } }

.mobile-menu__top {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-sm);
}
.mobile-menu .wordmark__name { color: var(--color-inverse-text); }
.mobile-menu__close {
  font-family: var(--font-mono); font-size: var(--text-2xs);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-inverse-text);
  display: flex; align-items: center; gap: var(--space-2xs);
}

.mobile-menu__list { margin-top: var(--space-lg); display: flex; flex-direction: column; }
.mobile-menu__item { border-top: 1px solid var(--color-inverse-border); }
.mobile-menu__item:last-child { border-bottom: 1px solid var(--color-inverse-border); }
.mobile-menu__link {
  display: flex; align-items: baseline; gap: var(--space-sm);
  padding-block: var(--space-sm);
  font-family: var(--font-display); font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-inverse-text);
}
.mobile-menu__link small {
  font-family: var(--font-mono); color: var(--color-accent-on-light); font-size: var(--text-xs); font-style: normal;
}

.mobile-menu__footer {
  margin-top: auto; padding-top: var(--space-xl);
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: var(--space-md);
}
.mobile-menu__footer .btn--primary { background: var(--color-inverse-text); color: var(--color-inverse-bg); }

/* ---- Capability ledger (services / capabilities index) ------------------ */

.ledger { border-top: var(--border-hair); }
.ledger-row {
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: baseline;
  gap: var(--space-md);
  padding-block: var(--space-md);
  border-bottom: var(--border-hair);
}
.ledger-row__num { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint); }
.ledger-row__title { font-family: var(--font-display); font-size: var(--text-lg); font-weight: 500; }
.ledger-row__meta {
  font-family: var(--font-mono); font-size: var(--text-2xs);
  color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em;
  justify-self: end; text-align: right;
}
@media (max-width: 36rem) {
  .ledger-row { grid-template-columns: 2.25rem 1fr; }
  .ledger-row__meta { grid-column: 2 / -1; justify-self: start; text-align: left; }
}

/* ---- Process rail --------------------------------------------------------- */

.process-rail { position: relative; }
.process-rail__line {
  position: absolute; left: 2.6rem; top: 0; bottom: 0; width: 1px;
  background: var(--color-border-strong);
}
@media (min-width: 48rem) { .process-rail__line { left: 3.6rem; } }

.process-rail__item {
  position: relative;
  display: grid;
  grid-template-columns: 5.2rem 1fr;
  gap: var(--space-md);
  padding-block: var(--space-lg);
  border-top: var(--border-hair);
}
.process-rail > .process-rail__item:last-child { border-bottom: var(--border-hair); }
@media (min-width: 48rem) { .process-rail__item { grid-template-columns: 7.2rem 1fr; } }

.process-rail__marker {
  position: relative; z-index: 1;
  width: 2.4rem; height: 2.4rem;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg);
  border: var(--border-hair-strong);
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-accent);
}

.process-rail__title { font-family: var(--font-display); font-size: var(--text-lg); margin-bottom: var(--space-2xs); }
.process-rail__body { color: var(--color-text-muted); max-width: 54ch; }

/* ---- Footer ----------------------------------------------------------- */

.site-footer { background: var(--color-bg-raised); border-top: var(--border-hair); }

.footer-top {
  display: grid; gap: var(--space-xl);
  padding-block: var(--space-2xl) var(--space-xl);
  border-bottom: var(--border-hair);
}
@media (min-width: 56rem) { .footer-top { grid-template-columns: 1.3fr 0.8fr 0.9fr 1fr; } }

.footer-brand p { color: var(--color-text-muted); margin-top: var(--space-sm); max-width: 34ch; }

.footer-col__title {
  font-family: var(--font-mono); font-size: var(--text-2xs);
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--color-text-faint); margin-bottom: var(--space-sm);
}
.footer-col__list { display: flex; flex-direction: column; gap: var(--space-xs); }
.footer-col__list a, .footer-col__list span { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer-col__list a:hover { color: var(--color-accent); }

.footer-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: var(--space-md); padding-block: var(--space-md);
  font-size: var(--text-2xs); color: var(--color-text-faint);
}
.footer-bottom__legal { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.footer-bottom__legal a { color: var(--color-text-faint); }
.footer-bottom__legal a:hover { color: var(--color-accent); }

/* ---- Forms -------------------------------------------------------------- */

.form-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-md); }
@media (min-width: 44rem) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .field--full { grid-column: 1 / -1; }
}

.field { display: flex; flex-direction: column; gap: var(--space-2xs); }
.field label {
  font-family: var(--font-mono); font-size: var(--text-2xs);
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted);
}
.field .required-mark { color: var(--color-accent); }
.field input, .field select, .field textarea {
  background: var(--color-surface);
  border: var(--border-hair-strong);
  padding: 0.85em 1em;
  font-size: var(--text-sm);
  color: var(--color-ink-strong);
}
.field textarea { min-height: 9rem; resize: vertical; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { border-color: var(--color-accent); }

.field-error { font-size: var(--text-xs); color: var(--color-error); display: none; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: var(--color-error); }
.field.has-error .field-error { display: block; }

.field--checkbox { flex-direction: row; align-items: flex-start; gap: var(--space-xs); }
.field--checkbox input { width: 1.1rem; height: 1.1rem; margin-top: 2px; accent-color: var(--color-accent); flex-shrink: 0; }
.field--checkbox label { text-transform: none; font-family: var(--font-body); letter-spacing: normal; font-size: var(--text-sm); color: var(--color-text); }

.field--honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-status {
  margin-top: var(--space-md); padding: var(--space-sm) var(--space-md);
  border: var(--border-hair); font-size: var(--text-sm); display: none;
}
.form-status[data-state="success"] { display: block; border-color: var(--color-success); background: rgba(110,139,114,0.12); }
.form-status[data-state="error"] { display: block; border-color: var(--color-error); background: rgba(201,113,87,0.12); }
.form-status[data-state="config"] {
  display: block; border-color: var(--color-border-strong); background: var(--color-surface);
  font-family: var(--font-mono); font-size: var(--text-xs);
}

.form-submit-row { display: flex; align-items: center; gap: var(--space-md); margin-top: var(--space-md); }

.spinner {
  width: 1rem; height: 1rem; border: 2px solid rgba(21,22,26,0.35);
  border-top-color: var(--color-bg); border-radius: 50%; display: none;
  animation: spin 700ms linear infinite;
}
.btn[data-loading="true"] .spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Legal content ------------------------------------------------------- */

.legal-content h2 { font-size: var(--text-lg); margin-top: var(--space-xl); margin-bottom: var(--space-sm); }
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li { color: var(--color-text-muted); margin-bottom: var(--space-sm); max-width: 68ch; }
.legal-content ul { padding-left: 1.2rem; }
.legal-content li { list-style: disc; }

.placeholder-note {
  font-family: var(--font-mono); font-size: var(--text-xs);
  border: 1px dashed var(--color-border-strong);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-muted); margin-block: var(--space-md);
}

/* ---- Page header pattern ------------------------------------------------- */

.page-header { padding-top: var(--space-2xl); padding-bottom: var(--space-xl); border-bottom: var(--border-hair); }
.page-header__num {
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-accent);
  display: block; margin-bottom: var(--space-sm);
}
.page-header__title { font-size: var(--text-3xl); max-width: 20ch; }
.page-header__lede { margin-top: var(--space-md); font-size: var(--text-md); color: var(--color-text-muted); max-width: 52ch; }

/* ---- Section intro pattern ------------------------------------------------ */

.section-intro { display: grid; gap: var(--space-md); margin-bottom: var(--space-xl); }
@media (min-width: 56rem) {
  .section-intro--split { grid-template-columns: minmax(0,1.4fr) minmax(0,1fr); align-items: end; }
}
.section-intro__num {
  font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-text-faint);
  margin-bottom: var(--space-sm); display: block;
}

/* ---- Contact panel -------------------------------------------------------- */

.contact-meta { display: flex; flex-direction: column; gap: var(--space-md); }
.contact-meta__item { display: flex; flex-direction: column; gap: 2px; }
.contact-meta__label {
  font-family: var(--font-mono); font-size: var(--text-2xs); text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-text-faint);
}
.contact-meta__value { font-size: var(--text-sm); color: var(--color-text); }

/* Exact honeypot class from spec (aliases .field--honeypot's hiding rules) */
.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}