/* ═══════════════════════════════════════════════════════
   BASE — Reset, typography, layout primitives
   ═══════════════════════════════════════════════════════ */

/* ── Reset ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  min-height: 0;
  scroll-margin-top: 72px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
  font-size: var(--fs-base);
  line-height: 1.75;
  letter-spacing: -.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Selection ── */
::selection {
  background: rgba(15,118,110,.15);
  color: var(--text);
}
body.evening-mode ::selection {
  background: rgba(245,158,11,.18);
  color: var(--text);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,.12); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.2); }

/* ── Container ── */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

/* ── Typography ── */
h1 {
  font-family: var(--display);
  font-size: clamp(1.9rem, 4.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--text);
  max-width: 660px;
  margin: 0 auto 1.25rem;
  text-wrap: balance;
}
h1 em {
  font-style: italic;
  color: var(--primary);
}
@supports(-webkit-background-clip: text) or (background-clip: text) {
  h1 em {
    background: linear-gradient(135deg, var(--primary), #0D9488);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

h2 {
  font-family: var(--display);
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.015em;
  color: var(--text);
  margin-bottom: .75rem;
  position: relative;
  padding-left: .85rem;
}
h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: .15em;
  bottom: .15em;
  width: 4px;
  border-radius: 3px;
  background: var(--primary);
}
h2 em {
  font-style: italic;
  color: var(--primary);
}
h2 em.red { color: var(--red); }
@supports(-webkit-background-clip: text) or (background-clip: text) {
  h2 em {
    background: linear-gradient(135deg, var(--primary), #0D9488);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

/* Alternate accent colors per section type */
.sec:nth-child(odd) h2::before { background: var(--primary); }
.sec:nth-child(even) h2::before { background: var(--teal); }
#escalation h2::before { background: var(--amber); }
#aiVision h2::before { background: var(--teal); }
#comms h2::before { background: var(--blue); }

h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

p {
  line-height: 1.7;
}

/* Content links — scoped to tool body and section prose */
.tool-body a,
.sec-desc a,
.hero-story a {
  color: var(--primary);
  text-decoration-color: var(--primary-bd);
  text-underline-offset: 2px;
  transition: color .15s, text-decoration-color .15s;
}
.tool-body a:hover,
.sec-desc a:hover,
.hero-story a:hover {
  color: var(--text);
  text-decoration-color: var(--primary);
}

/* ── Sections ── */
.sec {
  padding: clamp(3rem, 6vw, 5rem) 0;
  position: relative;
  border-top: 1px solid transparent;
  background-clip: padding-box;
}
.sec + .sec {
  border-top-color: transparent;
}
.sec::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
  opacity: .55;
}

.sec-alt {
  background: linear-gradient(180deg, var(--bg-2) 0%, rgba(245,244,241,.8) 50%, var(--bg) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* ── Eyebrow label ── */
.eyebrow {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: .75rem;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .75rem;
  border-radius: 100px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.eyebrow-red { color: var(--red); }

/* ── Section description ── */
.sec-desc {
  font-size: var(--fs-base);
  color: var(--text-2);
  max-width: 580px;
  line-height: 1.8;
  margin-bottom: 1.75rem;
}
.sec-desc strong {
  color: var(--text);
  font-weight: 600;
}

/* ── Section number badge ── */
.sec-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: .55rem;
  font-weight: 700;
  color: #fff;
  margin-right: .5rem;
  flex-shrink: 0;
}
.sec-num-green { background: linear-gradient(135deg, #0F766E, #34D399); }
.sec-num-red { background: linear-gradient(135deg, #B91C1C, #F87171); }
.sec-num[style*="background:var(--blue)"] { background: linear-gradient(135deg, #1D4ED8, #3B82F6); }
.sec-num[style*="background:var(--amber)"] { background: linear-gradient(135deg, #A16207, #D97706); }
.sec-num[style*="background:var(--teal)"] { background: linear-gradient(135deg, #0F766E, #14B8A6); }
.sec-num[style*="background:var(--purple)"] { background: linear-gradient(135deg, #6D28D9, #8B5CF6); }
.sec-num[style*="background:#0284c7"] { background: linear-gradient(135deg, #0284c7, #38BDF8); }
.sec-num[style*="background:#be185d"] { background: linear-gradient(135deg, #be185d, #F472B6); }
.sec-num[style*="background:#c2410c"] { background: linear-gradient(135deg, #c2410c, #FB923C); }
.sec-num[style*="background:#4338ca"] { background: linear-gradient(135deg, #4338ca, #818CF8); }

/* ── Fade-up base class ── */
.fu {
  opacity: 0;
  transform: translateY(16px) scale(.995);
  transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1);
}
.fu.vis {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ── Focus states ── */
a:focus-visible,
button:focus-visible,
[onclick]:focus-visible,
[tabindex="0"]:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible,
.lookup-filter:focus-visible,
.ai-tab:focus-visible,
.filter-tab:focus-visible,
.jt-btn:focus-visible,
.outreach-tab:focus-visible,
.nav-links a:focus-visible,
.toc-item:focus-visible,
.b-card:focus-visible,
.ai-card:focus-visible,
.counsel-card:focus-visible,
.esc-card:focus-visible,
.status-row:focus-visible,
.lookup-card:focus-visible,
.msg-preview:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Never remove focus from form fields when they're inside a container with
   its own outline — keep the explicit ring visible */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline-offset: 1px;
}

/* ── Landmark styling ── */
[role="region"] { outline: none; }

/* ── Screen-reader only helper ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ── Minimum font floor ── */
.lc-step, .lc-b-tag, .b-cat, .fip-tag, .cal-label, .cal-name,
.f-arrow-label, .sc-step-num, .tc-type, .tc-msg-label,
.kb-charcount, .pulse-delta, .rd-label, .lookup-field-label,
.b-d-label, .kb-esc-label, .fn-desc, .s-detail, .sp-count,
.s-badge, .demo-caption, .info-source, .lookup-count,
.toc-group-label {
  font-size: max(var(--fs-xs), .62rem);
}

/* ── Muted text contrast boost ── */
.sec-desc, .fn-desc, .s-detail, .rd-history,
.toc-item-desc, .ai-card-desc, .eq-reason, .b-d-text {
  color: var(--text-2);
}

/* ── Demo caption ── */
.demo-caption {
  font-family: var(--mono);
  font-size: .65rem;
  color: var(--text-3);
  padding: .5rem 0 0;
  display: flex;
  align-items: center;
  gap: .4rem;
  margin-top: .75rem;
  padding-top: .5rem;
  opacity: .75;
  border-top: 1px solid var(--border);
}
.demo-caption::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--border-2);
  flex-shrink: 0;
}