/* ============================================================
   pasiero.ai - masthead, hero, and interactive workflow panel
   ============================================================ */

/* ---------- masthead ---------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}

.masthead__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4.25rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-right: auto;
  text-decoration: none;
}

.masthead__controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.themetoggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  background: none;
  border: var(--outline);
  border-radius: 999px;
  color: var(--fg);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.12s ease;
}

.themetoggle:hover {
  transform: rotate(-8deg);
}

.themetoggle__icon {
  display: none;
}

.themetoggle__icon--sun {
  display: block;
}

html[data-theme="dark"] .themetoggle__icon--sun {
  display: none;
}

html[data-theme="dark"] .themetoggle__icon--moon {
  display: block;
}

.brand__mark {
  width: 2.25rem;
  height: 2.25rem;
}

.brand__mark--dark {
  display: none;
}

html[data-theme="dark"] .brand__mark--light {
  display: none;
}

html[data-theme="dark"] .brand__mark--dark {
  display: block;
}

.brand__name {
  font-family: var(--display);
  font-variation-settings: "SOFT" 40, "WONK" 1, "opsz" 40;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  /* page links plus the address have to clear the 56rem breakpoint where
     the burger takes over, so the gap tightens before the row can wrap */
  gap: clamp(0.9rem, 1.6vw, 1.4rem);
  font-family: var(--mono);
  font-size: 0.8rem;
}

.nav a {
  text-decoration: none;
  color: var(--ink-2);
  padding-block: 0.25rem;
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--fg);
  border-bottom-color: var(--vermilion);
}

.nav a[aria-current="page"] {
  color: var(--fg);
  border-bottom-color: var(--vermilion);
}

.nav__mail {
  color: var(--vermilion) !important;
}

.navtoggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: var(--outline);
  border-radius: 999px;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}

.navtoggle__bars,
.navtoggle__bars::before,
.navtoggle__bars::after {
  display: block;
  width: 1rem;
  height: 2px;
  background: currentColor;
}

.navtoggle__bars {
  position: relative;
}

.navtoggle__bars::before,
.navtoggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.navtoggle__bars::before {
  top: -5px;
}

.navtoggle__bars::after {
  top: 5px;
}

@media (max-width: 56rem) {
  .navtoggle {
    display: inline-flex;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding-bottom: 0.75rem;
    border-top: 1px solid var(--rule);
  }

  .nav--open {
    display: flex;
  }

  .nav a {
    width: 100%;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--rule);
    font-size: 0.9rem;
  }
}

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

.hero {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}

@media (min-width: 60rem) {
  .hero {
    grid-template-columns: 1fr 26rem;
    gap: 4rem;
  }
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 0.7rem 1.2rem;
  border: var(--outline);
  border-radius: 999px;
  background: transparent;
  color: var(--fg);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -8px color-mix(in srgb, var(--ink) 45%, transparent);
}

.btn--solid {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--cream);
}

.btn--solid:hover {
  box-shadow: 0 10px 24px -8px color-mix(in srgb, var(--vermilion) 65%, transparent);
}

.band--ink .btn,
.band--cta .btn {
  border-color: currentColor;
}

.band--ink .btn {
  color: var(--paper);
}

/* the ink band lightens --vermilion, so the solid button takes ink text
   rather than the cream it wears on a light band */
.band--ink .btn--solid {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: #16110f;
}

.band--ink .btn:hover,
.band--cta .btn:hover {
  box-shadow: 0 10px 20px -8px color-mix(in srgb, currentColor 40%, transparent);
}

.band--cta .btn--solid {
  background: #fff7e6;
  border-color: #16110f;
  color: #16110f;
}

/* ---------- interactive workflow panel ---------- */

.panel {
  background: var(--card);
  border: var(--outline);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 28px 56px -22px color-mix(in srgb, var(--vermilion) 55%, transparent),
    0 4px 0 var(--vermilion);
}

.panel__bar {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 1rem;
  border-bottom: var(--outline);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.panel__avatar {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 999px;
  background: var(--cream);
  padding: 2px;
  flex-shrink: 0;
}

.panel__path {
  flex: 1;
}

.panel__hint {
  color: color-mix(in srgb, var(--paper) 55%, transparent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.65rem;
}

.tree {
  list-style: none;
  margin: 0;
  padding: 0.75rem 0;
  font-family: var(--mono);
  font-size: 0.82rem;
}

.tree__row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  width: 100%;
  background: none;
  border: 0;
  border-left: 4px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.3rem 1rem 0.3rem 0.75rem;
  font: inherit;
  color: var(--fg);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease;
}

.tree__stem {
  color: var(--rule);
}

.tree__name {
  flex: 1;
}

.tree__note {
  font-size: 0.7rem;
  color: var(--ink-2);
  letter-spacing: 0.04em;
}

.tree__row:hover {
  background: color-mix(in srgb, var(--orchid) 10%, transparent);
}

.tree__row--on {
  border-left-color: var(--vermilion);
  background: color-mix(in srgb, var(--vermilion) 10%, transparent);
}

.tree__row--on .tree__name {
  font-weight: 600;
  color: var(--vermilion);
}

.detail {
  border-top: var(--outline);
  padding: 1.1rem 1rem 1.25rem;
  background: var(--board);
}

.detail__label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orchid);
  margin: 0 0 0.3rem;
}

.detail__label + p {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

.detail__rule {
  color: var(--ink-2);
}

.detail__example {
  display: block;
  font-size: 0.72rem;
  color: var(--ink-2);
  border-top: 1px dashed var(--rule);
  padding-top: 0.8rem;
  word-break: break-all;
}