/* ============================================================
   LCS v9 — plan.css
   Plan Your Trip v2 form styles. 5-step layout, progress bar,
   step transitions, escape-hatch sticky footer, success state.
   Depends on: tokens.css, global.css, components.css, pages.css.
   ============================================================ */

.plan-page {
  background: var(--bg-canvas-deep);
  min-height: 100vh;
}

/* ============================================================
   PLAN HERO + PROGRESS BAR
   ============================================================ */
.plan-hero {
  padding-block: calc(var(--s-128) + 56px) var(--s-32);
  text-align: center;
}
.plan-hero__progress {
  display: flex;
  gap: var(--s-4);
  max-width: 720px;
  margin: var(--s-48) auto 0;
}
.plan-hero__progress span {
  flex: 1;
  height: 2px;
  background: var(--border-default-light);
  transition: background-color var(--d-quick) var(--ease-editorial);
}
.plan-hero__progress span.is-active { background: var(--gold); }
.plan-hero__progress span.is-done   { background: var(--gold-deep); }
.plan-hero__progress-label {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary-on-light);
  margin-top: var(--s-12);
}

/* ============================================================
   PLAN BODY — single visible step
   ============================================================ */
.plan-body { padding-bottom: var(--s-192); }
.plan-body__inner { max-width: 720px; margin-inline: auto; padding-inline: var(--container-px-desktop); }
@media (max-width: 768px) { .plan-body__inner { padding-inline: var(--container-px-mobile); } }

.plan-step {
  display: none;
  animation: lcs-step-in 540ms var(--ease-editorial);
}
.plan-step.is-active { display: block; }
@keyframes lcs-step-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .plan-step { animation: none; }
}

.plan-step__head {
  margin-bottom: var(--s-48);
  text-align: center;
}
.plan-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: var(--s-12);
}
.plan-step__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 300;
  line-height: 1.08;
}
.plan-step__lead {
  margin-top: var(--s-16);
  color: var(--text-secondary-on-light);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--fs-18);
}

.plan-step__body { display: flex; flex-direction: column; gap: var(--s-24); }

/* Two-column input layout for date pair + name/email pair */
.plan-pair { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-32); }
@media (max-width: 600px) { .plan-pair { grid-template-columns: 1fr; gap: var(--s-16); } }

/* Step-1 mode block branching (rare — we only branch the textarea for "multi" mode) */
.plan-mode-block { display: none; }
.plan-mode-block.is-active { display: block; }

/* Considerations details/summary */
.plan-considerations {
  border-top: 1px solid var(--border-subtle-light);
  padding-top: var(--s-16);
}
.plan-considerations summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary-on-light);
  padding-block: var(--s-12);
  display: flex;
  align-items: center;
  gap: var(--s-8);
}
.plan-considerations summary::-webkit-details-marker { display: none; }
.plan-considerations summary::after {
  content: "+";
  margin-left: auto;
  color: var(--gold);
  transition: transform var(--d-micro);
}
.plan-considerations[open] summary::after { transform: rotate(45deg); }

/* Review summary (step 5) */
.plan-review {
  background: var(--bg-canvas);
  border: 1px solid var(--border-subtle-light);
  border-radius: 2px;
  padding: var(--s-32);
  margin-block: var(--s-32);
}
.plan-review dl { display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: var(--s-12) var(--s-24); margin: 0; }
.plan-review dt {
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary-on-light);
}
.plan-review dd { margin: 0; font-family: var(--font-display); font-size: var(--fs-18); }

/* Honeypot — hidden but accessible */
.plan-hp {
  position: absolute !important;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ============================================================
   STICKY FOOTER NAV (back/next + escape hatch)
   ============================================================ */
.plan-footer {
  position: sticky;
  bottom: 0;
  background: rgba(245, 240, 230, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-top: 1px solid var(--border-subtle-light);
  padding: var(--s-16) 0;
  z-index: 30;
}
.plan-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-16);
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--container-px-desktop);
}
@media (max-width: 768px) { .plan-footer__inner { padding-inline: var(--container-px-mobile); } }
.plan-footer__escape {
  display: flex;
  align-items: center;
  gap: var(--s-8);
  font-family: var(--font-mono);
  font-size: var(--fs-11);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-tertiary-on-light);
}
.plan-footer__escape a {
  color: var(--text-secondary-on-light);
  border-bottom: 1px solid var(--border-default-light);
  padding-bottom: 1px;
}
.plan-footer__escape a:hover { color: var(--gold); border-bottom-color: var(--gold); }
@media (max-width: 600px) {
  .plan-footer__escape { display: none; }
}

.plan-footer__actions { display: flex; gap: var(--s-12); }

/* ============================================================
   SUCCESS STATE
   ============================================================ */
.plan-success {
  display: none;
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding-block: var(--s-128);
}
.plan-success.is-active { display: block; }
.plan-success__ref {
  margin: var(--s-32) auto;
  display: inline-block;
  padding: var(--s-16) var(--s-32);
  border: 1px solid var(--gold);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  letter-spacing: 0.2em;
  color: var(--gold);
  background: rgba(200, 163, 87, 0.06);
}

/* ============================================================
   ERROR + LOADING STATES
   ============================================================ */
.plan-error {
  display: none;
  margin: var(--s-16) auto 0;
  padding: var(--s-12) var(--s-16);
  border: 1px solid var(--danger);
  border-radius: 2px;
  background: rgba(160, 72, 72, 0.08);
  color: var(--danger);
  font-size: var(--fs-14);
  text-align: center;
}
.plan-error.is-active { display: block; }

.plan-loading {
  display: none;
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-tertiary-on-light);
  padding-block: var(--s-48);
}
.plan-loading.is-active { display: block; }