/* How It Works - light-clean docs theme.
 * Loaded together with landing.css; reuses its CSS variables and components.
 */

/* ───────── Layout ───────── */
.page-docs { background: var(--bg); }

.band--soft { background: var(--bg-soft); }
section.band { padding: 64px 0; }

@media (max-width: 720px) {
  section.band { padding: 48px 0; }
}

/* ───────── Hero (smaller than landing hero) ───────── */
.docs-hero {
  padding: 72px 0 56px;
}
.docs-hero .hero__inner {
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 980px) {
  .docs-hero .hero__inner {
    grid-template-columns: 1.4fr 0.6fr;
  }
}
.docs-hero h1 {
  font-size: clamp(28px, 4.2vw, 44px);
  margin-bottom: 12px;
}
.docs-hero .hero__sub {
  font-size: 16px;
  max-width: 600px;
}

/* On-this-page TOC */
.docs-toc {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow-sm);
  align-self: start;
}
.docs-toc__title {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-bottom: 10px;
}
.docs-toc__list {
  margin: 0;
  padding: 0;
  list-style: decimal inside;
  font-size: 14px;
  color: var(--fg-dim);
}
.docs-toc__list li { padding: 3px 0; }
.docs-toc__list a {
  color: var(--fg-dim);
  text-decoration: none;
}
.docs-toc__list a:hover {
  color: var(--accent-2);
}

/* ───────── Section header ───────── */
.docs-head {
  max-width: 720px;
  margin: 0 0 28px;
}
.docs-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.docs-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  background: var(--accent-2-soft);
  border: 1px solid rgba(99, 102, 241, 0.20);
  padding: 4px 10px;
  border-radius: 9999px;
  margin-bottom: 12px;
}
.docs-head h2 {
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -0.015em;
  margin: 0 0 8px;
  color: var(--fg);
  font-weight: 800;
}
.docs-head > p {
  color: var(--fg-dim);
  font-size: 15.5px;
  margin: 0;
  max-width: 64ch;
}
.docs-head--center > p { margin-left: auto; margin-right: auto; }

/* ───────── 01 cards ───────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 700; }
.card p { margin: 0; color: var(--fg-dim); font-size: 14px; line-height: 1.55; }
.card-callout {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--accent-2-soft);
  border-left: 3px solid var(--accent-2);
  border-radius: 8px;
  font-size: 13px;
  color: var(--fg);
  line-height: 1.5;
}

/* ───────── 02 comparison ───────── */
.compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.compare__col {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.compare__col--accent {
  border-color: rgba(6, 182, 212, 0.45);
  background:
    linear-gradient(180deg, rgba(6, 182, 212, 0.06), transparent),
    var(--bg-card);
}
.compare__col h3 { margin: 0 0 12px; font-size: 16px; font-weight: 700; }
.compare__col ul {
  margin: 0;
  padding-left: 1.1em;
  color: var(--fg-dim);
  font-size: 14px;
  line-height: 1.6;
}
.compare__col ul li { margin-bottom: 4px; }
.callout-quote {
  background: var(--bg-card);
  border-left: 3px solid var(--accent-2);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
}
.callout-quote p {
  margin: 0;
  color: var(--fg);
  font-size: 15px;
  line-height: 1.65;
}
.callout-quote strong { color: var(--fg); }

/* ───────── 03 use cases ───────── */
.use-cases {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 720px) {
  .use-cases { grid-template-columns: 1fr 1fr; }
}
.use-case {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.use-case__tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 3px 9px;
  border-radius: 9999px;
  margin-bottom: 10px;
}
.use-case h3 { margin: 0 0 8px; font-size: 16px; font-weight: 700; }
.use-case p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 14px;
  line-height: 1.55;
}
.use-case__formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 10px 12px;
  background: var(--bg-soft);
  border-radius: 10px;
  font-size: 13px;
  color: var(--fg);
}
.use-case__formula .op {
  color: var(--accent-2);
  font-weight: 800;
  font-family: var(--font-mono);
}
.use-case__formula strong { color: var(--accent-2); }

/* ───────── 04 audience ───────── */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.audience-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.audience-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.audience-card--accent {
  border-color: rgba(99, 102, 241, 0.35);
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.06), var(--bg-card));
}
.audience-card h3 { margin: 0 0 6px; font-size: 15.5px; font-weight: 700; }
.audience-card p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 13.5px;
  line-height: 1.55;
}

/* ───────── 05 spike anatomy ───────── */
.spike-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}
@media (min-width: 980px) {
  .spike-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
    gap: 32px;
  }
}
.spike-screen {
  position: relative;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(400px 200px at 20% 0%, rgba(6, 182, 212, 0.25), transparent 60%),
    radial-gradient(400px 240px at 90% 100%, rgba(99, 102, 241, 0.25), transparent 65%),
    #0b1220;
  padding: 6px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.spike-svg {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 4px);
}
.spike-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.spike-item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.spike-item__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.25);
}
.spike-item h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
}
.spike-item p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 13.5px;
  line-height: 1.55;
}

/* ───────── 06 patterns ───────── */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.pattern-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}
.pattern-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, 0.35);
}
.pattern-svg-wrap {
  position: relative;
  border-radius: 12px;
  padding: 6px;
  background:
    radial-gradient(360px 140px at 50% 100%, rgba(6, 182, 212, 0.18), transparent 70%),
    #0b1220;
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.pattern-svg {
  display: block;
  width: 100%;
  height: 90px;
  border-radius: 8px;
}
.pattern-label {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
}
.pattern-label--neutral { color: #475569; background: rgba(100, 116, 139, 0.10); border-color: rgba(100, 116, 139, 0.25); }
.pattern-label--bull    { color: #047857; background: rgba(16, 185, 129, 0.10); border-color: rgba(16, 185, 129, 0.30); }
.pattern-label--bear    { color: #b91c1c; background: rgba(239, 68, 68, 0.10);  border-color: rgba(239, 68, 68, 0.30); }
.pattern-label--choppy  { color: #b45309; background: rgba(245, 158, 11, 0.10); border-color: rgba(245, 158, 11, 0.30); }
.pattern-label--block   { color: #9333ea; background: rgba(168, 85, 247, 0.10); border-color: rgba(168, 85, 247, 0.30); }
.pattern-label--burst   { color: #1d4ed8; background: rgba(59, 130, 246, 0.10); border-color: rgba(59, 130, 246, 0.30); }

.pattern-card h3 { margin: 2px 0 0; font-size: 15px; font-weight: 700; }
.pattern-card p  { margin: 0; color: var(--fg-dim); font-size: 13.5px; line-height: 1.5; }

.pattern-tags {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pattern-tags li {
  font-size: 10.5px;
  letter-spacing: 0.2px;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--fg-dim);
  font-family: var(--font-mono);
}

.reading-tip {
  margin-top: 22px;
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  border: 1px solid rgba(6, 182, 212, 0.30);
  color: var(--fg);
  font-size: 14px;
  line-height: 1.6;
}
.reading-tip strong { color: var(--accent-2); margin-right: 4px; }
.reading-tip em { color: var(--accent); font-style: normal; font-weight: 600; }

/* ───────── Final card ───────── */
.value-list {
  text-align: left;
  margin: 16px auto 18px;
  max-width: 560px;
  padding-left: 1.1em;
  color: var(--fg-dim);
  font-size: 15px;
  line-height: 1.65;
}
.tagline {
  margin: 18px 0 22px;
  font-size: 17px;
  font-weight: 600;
  color: var(--fg);
}