/* THE PLAYBOOK — documentation standards, performance, coaching */

.pb-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.pb-hero .fallback {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: 18% center;
}
.pb-hero .veil {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(5,8,20,0.22) 0%, rgba(5,8,20,0.55) 42%, rgba(5,8,20,0.92) 100%),
    linear-gradient(180deg, rgba(5,8,20,0.2) 0%, transparent 20%, rgba(5,8,20,0.7) 100%);
}
.pb-hero-copy {
  position: relative; z-index: 2;
  margin-left: auto;
  width: min(680px, 54vw);
  padding: 10vh 48px 8vh 0;
}
.pb-hero h1 {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(56px, 8vw, 104px);
  line-height: 0.86;
  letter-spacing: 0.02em;
  margin: 10px 0 18px;
}
.pb-hero .tag {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: clamp(20px, 2.1vw, 28px);
  line-height: 1.3;
  color: #d7e6f5;
}
.pb-hero .tag em { color: var(--purple); font-style: italic; }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 22px;
}
.pillar {
  background: var(--panel);
  border: 1px solid rgba(34, 211, 238, 0.14);
  padding: 26px 24px 24px;
}
.pillar h3 {
  font-family: "Bebas Neue", sans-serif;
  font-size: 28px;
  letter-spacing: 0.04em;
  margin: 8px 0 10px;
}
.pillar p { font-size: 14.5px; }

.artifacts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 22px;
}
.artifact {
  background: var(--panel);
  border: 1px solid rgba(34, 211, 238, 0.14);
  padding: 22px 22px 18px;
}
.artifact .meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 8px;
}
.artifact h3 { margin-bottom: 8px; }
.artifact p { font-size: 14px; }
.artifact ul {
  margin: 10px 0 0 18px;
  color: #c5d2e3;
  font-size: 13.5px;
  line-height: 1.45;
}
.artifact li { margin: 0 0 6px; }

.loop {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin-top: 22px;
}
.loop-step {
  background: rgba(16, 25, 44, 0.85);
  border: 1px solid rgba(34, 211, 238, 0.16);
  padding: 18px 14px 16px;
  text-align: center;
}
.loop-step b {
  display: block;
  font-family: "Bebas Neue", sans-serif;
  font-size: 32px;
  color: var(--cyan);
  line-height: 1;
}
.loop-step span {
  display: block;
  margin-top: 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 22px;
}
.do, .dont {
  background: var(--panel);
  border: 1px solid rgba(34, 211, 238, 0.14);
  padding: 24px;
}
.do h3 { color: var(--green); }
.dont h3 { color: var(--orange); }
.do ul, .dont ul, .iso ul, .test-grid ul {
  margin: 10px 0 0 18px;
  color: #c5d2e3;
  font-size: 14px;
  line-height: 1.5;
}
.do li, .dont li, .iso li { margin: 0 0 8px; }

.iso {
  background: var(--panel);
  border: 1px solid rgba(34, 211, 238, 0.14);
  padding: 24px;
  margin-top: 16px;
}

.upgrade-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 18px;
  font-size: 13.5px;
}
.upgrade-table th {
  text-align: left;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 10px 12px;
  border-bottom: 1px solid rgba(34, 211, 238, 0.28);
}
.upgrade-table td {
  padding: 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  color: #c5d2e3;
  vertical-align: top;
}
.upgrade-table tr:hover td { background: rgba(34, 211, 238, 0.04); }

.test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}
.test-card {
  background: var(--panel);
  border: 1px solid rgba(34, 211, 238, 0.14);
  padding: 18px 16px;
}
.test-card h3 { font-size: 15px; margin-bottom: 6px; }
.test-card p { font-size: 13px; }

.doctrine {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 16px;
  margin-top: 22px;
}
.doctrine blockquote {
  margin: 0;
}

.note {
  margin-top: 28px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
  line-height: 1.6;
}

@media (max-width: 980px) {
  .pb-hero {
    min-height: 0;
    height: auto;
    overflow: visible;
    align-items: flex-end;
  }
  .pb-hero-copy { width: 100%; padding: 96px 20px 36px; }
  .pb-hero .tag, .pb-hero-copy p { overflow-wrap: break-word; }
  .pb-hero h1 { font-size: 64px; }
  .pb-hero-copy .btn-floor,
  .pb-hero-copy .btn-ghost {
    display: block;
    width: 100%;
    text-align: center;
    margin: 12px 0 0;
  }
  .pillars, .artifacts, .two-col, .doctrine, .test-grid { grid-template-columns: 1fr; }
  .loop { grid-template-columns: 1fr 1fr; }
}