/* ==========================================================================
   XPLOROO · How It Works module
   how-it-works.css — Standalone page (how-it-works.html). Centered hero, an
   8-step vertical timeline (numbered glass nodes + connecting line, each
   step tinted with its own accent), and a closing gradient CTA card.
   Scoped entirely under `.hiw-*` so it never touches any other page.
   Reuses global tokens from variables.css. Load AFTER utilities.css.
   ========================================================================== */

.hiw-page {
  padding-block: clamp(2.5rem, 1.6rem + 3vw, 4.5rem) var(--section-gap);
}
.hiw-container {
  max-width: var(--container-lg);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* -------------------------------------------------------------------------
   HERO
   ------------------------------------------------------------------------- */
.hiw-hero {
  text-align: center;
  max-width: 44rem;
  margin-inline: auto;
  margin-bottom: clamp(3rem, 2.2rem + 3vw, 5rem);
  animation: hiw-fade-in var(--dur-slower) var(--ease-out) both;
}
.hiw-hero__eyebrow {
  margin: 0;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-hover);
}
.hiw-hero__title {
  margin: var(--space-2) 0 0;
  font-size: clamp(2.25rem, 1.7rem + 2.6vw, 3.5rem);
}
.hiw-hero__subtitle {
  margin: var(--space-4) auto 0;
  max-width: 40rem;
  font-size: var(--fs-md);
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------
   Timeline
   ------------------------------------------------------------------------- */
.hiw-steps {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-width: 46rem;
  margin-inline: auto;
}
.hiw-steps::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.04));
}

.hiw-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slower) var(--ease-out), transform var(--dur-slower) var(--ease-out);
}
.hiw-step.is-visible { opacity: 1; transform: translateY(0); }

/* Colour themes — cycle through the same accent language used elsewhere
   on the site (chapter cards, service cards). */
.hiw-step:nth-child(8n+1) { --hiw-a: #a855f7; --hiw-b: #ec4899; } /* Purple -> Pink */
.hiw-step:nth-child(8n+2) { --hiw-a: #3b82f6; --hiw-b: #22d3ee; } /* Blue -> Cyan */
.hiw-step:nth-child(8n+3) { --hiw-a: #f97316; --hiw-b: #fbbf24; } /* Orange -> Gold */
.hiw-step:nth-child(8n+4) { --hiw-a: #10b981; --hiw-b: #14b8a6; } /* Emerald -> Teal */
.hiw-step:nth-child(8n+5) { --hiw-a: #6366f1; --hiw-b: #8b5cf6; } /* Indigo -> Violet */
.hiw-step:nth-child(8n+6) { --hiw-a: #ef4444; --hiw-b: #f97316; } /* Red -> Orange */
.hiw-step:nth-child(8n+7) { --hiw-a: #84cc16; --hiw-b: #22c55e; } /* Lime -> Green */
.hiw-step:nth-child(8n+8) { --hiw-a: #ec4899; --hiw-b: #6366f1; } /* Pink -> Indigo */

.hiw-step__node {
  position: relative;
  flex: none;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, color-mix(in srgb, var(--hiw-a) 30%, transparent), color-mix(in srgb, var(--hiw-b) 14%, transparent));
  border: 1px solid color-mix(in srgb, var(--hiw-a) 45%, transparent);
  color: #fff;
}
.hiw-step__icon { width: 24px; height: 24px; }
.hiw-step__number {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--hiw-a), var(--hiw-b));
  color: #fff;
  font-size: 0.7rem;
  font-weight: var(--fw-bold);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.hiw-step__content {
  flex: 1;
  min-width: 0;
  padding: var(--space-5) var(--space-6);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  box-shadow: var(--shadow-card);
  transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-standard), box-shadow var(--dur-base) var(--ease-out);
}
@media (hover: hover) {
  .hiw-step:hover .hiw-step__content {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--hiw-a) 45%, transparent);
    box-shadow: var(--shadow-lg), 0 0 26px color-mix(in srgb, var(--hiw-a) 24%, transparent);
  }
}

.hiw-step__title {
  margin: 0;
  font-size: var(--fs-lg);
  color: var(--color-text-strong);
}
.hiw-step__desc {
  margin: var(--space-2) 0 0;
  font-size: var(--fs-sm);
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------
   Closing CTA
   ------------------------------------------------------------------------- */
.hiw-cta {
  margin-top: clamp(3.5rem, 2.6rem + 4vw, 6rem);
  text-align: center;
  padding: clamp(2.5rem, 1.9rem + 3vw, 4.5rem) clamp(1.5rem, 1rem + 2vw, 3rem);
  border-radius: var(--radius-3xl);
  border: 1px solid var(--glass-border);
  background:
    linear-gradient(135deg, rgba(139, 60, 240, 0.16), rgba(34, 211, 238, 0.08)),
    var(--glass-bg);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  backdrop-filter: blur(var(--glass-blur)) saturate(var(--glass-saturate));
  box-shadow: var(--shadow-card);
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slower) var(--ease-out), transform var(--dur-slower) var(--ease-out);
}
.hiw-cta.is-visible { opacity: 1; transform: translateY(0); }

.hiw-cta__title {
  margin: 0;
  font-size: clamp(1.75rem, 1.4rem + 1.6vw, 2.5rem);
}
.hiw-cta__subtitle {
  margin: var(--space-3) auto 0;
  max-width: 34rem;
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}
.hiw-cta__actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}
.hiw-cta__secondary {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 255, 255, 0.35);
}
.hiw-cta__secondary:hover { text-decoration-color: currentColor; }

/* -------------------------------------------------------------------------
   LIGHT THEME — literal white values above assume a dark canvas; re-theme
   them so they stay visible against the white page/card surfaces.
   ------------------------------------------------------------------------- */
:root[data-theme="light"] .hiw-steps::before {
  background: linear-gradient(180deg, rgba(17, 17, 23, 0.22), rgba(17, 17, 23, 0.04));
}
:root[data-theme="light"] .hiw-cta__secondary {
  text-decoration-color: rgba(17, 17, 23, 0.35);
}

@keyframes hiw-fade-in {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 560px) {
  .hiw-steps::before { left: 23px; }
  .hiw-step { gap: var(--space-4); }
  .hiw-step__node { width: 48px; height: 48px; }
  .hiw-step__icon { width: 20px; height: 20px; }
  .hiw-step__content { padding: var(--space-4) var(--space-5); }
}

@media (prefers-reduced-motion: reduce) {
  .hiw-hero, .hiw-step, .hiw-cta { animation: none; opacity: 1; transform: none; transition: none; }
  .hiw-step:hover .hiw-step__content { transform: none; }
}