/* ============================================================
   LINE THEORY — SHARED DESIGN SYSTEM
   Loaded by every page. Edit tokens here once; every page updates.
   Page-specific styles (hero, record panel, calculators, etc.)
   live in each page's own <style> block, not here.
   ============================================================ */

:root{
  --bg: #0B0C0E;
  --bg-alt: #111317;
  --surface: #15171A;
  --surface-2: #1C1F23;
  --border: #2A2D31;
  --border-soft: #232629;
  --text: #EDEEEE;
  --text-mute: #9AA0A6;
  --text-faint: #5B6167;
  --green: #39FF5F;
  --green-dim: #1C8030;
  --green-glow: rgba(57,255,95,0.25);
  --up: #4FAE7A;
  --down: #C1554A;
  --push: #8B93A1;

  --font-display: "Big Shoulders Display", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --font-body: "Inter", sans-serif;

  --radius: 3px;
  --container: 1120px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* faint board texture */
body::before{
  content:"";
  position: fixed; inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(180deg, rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px, transparent 1px, transparent 3px);
  z-index: 0;
}

a{ color: inherit; }
img{ max-width:100%; display:block; }

:focus-visible{
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.wrap{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  display:flex; align-items:center; gap:8px;
}
.eyebrow::before{
  content:"";
  width:6px; height:6px;
  background: var(--green);
  display:inline-block;
  flex-shrink:0;
}

h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
  margin: 0;
  text-transform: uppercase;
}

.h2{ font-size: clamp(28px, 4vw, 42px); line-height: 1.05; }
.section-head{ max-width: 640px; margin-bottom: 40px; }
.section-head p{ color: var(--text-mute); font-size: 16px; margin-top: 14px; }

.tag-num{
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 13px;
}

section{ position: relative; z-index:1; padding: 88px 0; border-bottom: 1px solid var(--border-soft); scroll-margin-top: 130px; }
section:last-of-type{ border-bottom: none; }

/* ============================================================
   AGE GATE
   ============================================================ */
#age-gate{
  position: fixed; inset:0; z-index: 100;
  background: rgba(6,7,8,0.94);
  display:flex; align-items:center; justify-content:center;
  padding: 24px;
}
#age-gate[hidden]{ display:none; }
.gate-card{
  max-width: 440px;
  width:100%;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 36px 32px;
}
.gate-card .eyebrow{ margin-bottom: 18px; }
.gate-card h2{ font-size: 26px; margin-bottom: 14px; }
.gate-card p{ color: var(--text-mute); font-size: 14.5px; margin: 0 0 26px; }
.gate-actions{ display:flex; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor:pointer;
  text-decoration:none;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--green); color: #04150A; border-color: var(--green); font-weight: 600;
  box-shadow:
    0 0 22px var(--green-glow),
    inset 0 1px 0 rgba(255,255,255,0.35),
    inset 0 -2px 0 rgba(0,0,0,0.18),
    0 3px 10px -3px rgba(0,0,0,0.5);
}
.btn-primary:hover{
  background: #61FF87;
  box-shadow:
    0 0 32px var(--green-glow),
    inset 0 1px 0 rgba(255,255,255,0.4),
    inset 0 -2px 0 rgba(0,0,0,0.18),
    0 5px 14px -3px rgba(0,0,0,0.55);
}
.btn-primary:active{
  transform: translateY(1px);
  box-shadow:
    0 0 16px var(--green-glow),
    inset 0 1px 3px rgba(0,0,0,0.25);
}
.btn-ghost{ background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover{ border-color: var(--green); color: var(--green); }
.btn-disabled{ background: transparent; color: var(--text-faint); border-color: var(--border); cursor: not-allowed; }
.btn-sm{ padding: 10px 16px; font-size: 12px; }

/* ============================================================
   NAV
   ============================================================ */
header.site-header{
  position: sticky; top:0; z-index: 40;
  background: rgba(11,12,14,0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}
.nav-row{ display:flex; align-items:center; justify-content:space-between; padding: 16px 24px; }
.logo{
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration:none;
  white-space:nowrap;
}
.logo b{ color: var(--green); }
nav.links{ display:flex; align-items:center; gap: 26px; }
nav.links a{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-mute);
  text-decoration:none;
}
nav.links a:hover{ color: var(--green); }
nav.links a.current{ color: var(--green); }
.nav-cta{ display:flex; align-items:center; gap: 16px; }
.nav-toggle{ display:none; background:none; border:1px solid var(--border); color: var(--text); padding: 8px 10px; font-family: var(--font-mono); }

/* nav dropdown (Tools) — CSS-only, hover/focus reveal */
.nav-dropdown{ position:relative; display:flex; align-items:center; }
.nav-dropdown > a{ cursor:default; }
.nav-dropdown > a::after{ content:"▾"; font-size:9px; margin-left:5px; }
.nav-dropdown-panel{
  position:absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%);
  background: var(--surface); border: 1px solid var(--border);
  min-width: 220px; padding: 8px; z-index: 50;
  opacity:0; visibility:hidden; transform: translateX(-50%) translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
}
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown:focus-within .nav-dropdown-panel{
  opacity:1; visibility:visible; transform: translateX(-50%) translateY(0);
}
.nav-dropdown-panel a{
  display:block; padding: 9px 12px; font-size: 12px;
  color: var(--text-mute); white-space:nowrap;
}
.nav-dropdown-panel a:hover{ background: var(--surface-2); color: var(--green); }

@media (max-width: 860px){
  nav.links{ display:none; }
  .nav-toggle{ display:inline-flex; }
}

/* ============================================================
   TICKER
   ============================================================ */
.ticker{
  background: #0E0F11;
  border-bottom: 1px solid var(--border-soft);
  overflow:hidden;
  white-space:nowrap;
  padding: 9px 0;
}
.ticker-track{
  display:inline-flex;
  animation: scroll-left 34s linear infinite;
}
@keyframes scroll-left{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce){
  .ticker-track{ animation: none; }
}
.ticker-item{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--text-mute);
  padding: 0 22px;
  display:inline-flex;
  align-items:center;
  gap: 22px;
}
.ticker-item strong{ color: var(--green); font-weight:600; }

/* ============================================================
   BREADCRUMB + ARTICLE HERO (used by tool pages + 101)
   ============================================================ */
.crumb{
  font-family: var(--font-mono); font-size: 12px; color: var(--text-faint);
  padding: 20px 0 0;
}
.crumb a{ color: var(--text-faint); text-decoration:none; }
.crumb a:hover{ color: var(--green); }

.article-hero{ padding: 24px 0 56px; border-bottom: 1px solid var(--border-soft); }
.article-hero .eyebrow{ margin-bottom: 16px; }
.article-hero h1{ font-size: clamp(32px, 5vw, 50px); line-height: 1.03; margin-bottom: 18px; }
.article-hero .lede{ font-size: 17px; color: var(--text-mute); max-width: 640px; }
.article-hero .updated{ font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); margin-top: 18px; }

/* ============================================================
   TABLE OF CONTENTS
   ============================================================ */
.toc{
  border: 1px solid var(--border); background: var(--surface);
  padding: 20px 22px; margin: 40px 0 56px;
}
.toc .eyebrow{ margin-bottom: 12px; }
.toc ol{ margin:0; padding-left: 18px; }
.toc li{ margin-bottom: 8px; font-size: 14px; }
.toc li:last-child{ margin-bottom:0; }
.toc a{ color: var(--text-mute); text-decoration:none; }
.toc a:hover{ color: var(--green); }

/* ============================================================
   CALCULATOR CARD (shared shell for every tool)
   ============================================================ */
.calc-card{ background: var(--surface); border: 1px solid var(--border); }
.calc-head{
  display:flex; justify-content:space-between; align-items:flex-start; gap:16px; flex-wrap:wrap;
  padding: 24px 26px; border-bottom: 1px solid var(--border-soft);
}
.calc-head h2{ font-size: 18px; text-transform:none; letter-spacing:0; margin-bottom: 6px; }
.calc-head p{ color: var(--text-mute); font-size: 13.5px; margin:0; max-width: 480px; }
.calc-head-actions{ display:flex; gap:8px; flex-shrink:0; }

.calc-body{ padding: 26px; display:grid; grid-template-columns: 1fr 1fr; gap: 0; }
@media (max-width: 760px){ .calc-body{ grid-template-columns: 1fr; } }
.calc-inputs{ padding-right: 30px; border-right: 1px solid var(--border-soft); display:flex; flex-direction:column; gap:18px; }
@media (max-width: 760px){ .calc-inputs{ padding-right:0; border-right:none; padding-bottom: 26px; border-bottom: 1px solid var(--border-soft); } }
.calc-outputs{ padding-left: 30px; display:flex; flex-direction:column; }
@media (max-width: 760px){ .calc-outputs{ padding-left:0; padding-top: 26px; } }

.field label{
  display:block; font-family: var(--font-mono); font-size: 11px; letter-spacing:0.06em;
  text-transform:uppercase; color: var(--text-faint); margin-bottom: 8px;
}
.field input[type="number"],
.field input[type="text"],
.field input[type="email"],
.field select{
  width:100%; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-family: var(--font-mono); font-size: 15px; padding: 12px 14px; border-radius: var(--radius);
}
.field input:focus, .field select:focus{ outline:2px solid var(--green); outline-offset:0; border-color: var(--green); }
.field .hint{ font-size: 12px; color: var(--text-faint); margin-top: 6px; }
.field-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.radio-row{ display:flex; gap: 8px; flex-wrap:wrap; }
.radio-chip{
  font-family: var(--font-mono); font-size:12px; padding: 8px 14px; border: 1px solid var(--border);
  color: var(--text-mute); cursor:pointer; border-radius: var(--radius); user-select:none;
}
.radio-chip input{ display:none; }
.radio-chip.active{ border-color: var(--green); color: var(--green); background: rgba(36,222,104,0.06); }

.result-row{
  display:flex; justify-content:space-between; align-items:baseline; gap: 12px;
  padding: 13px 0; border-top: 1px dashed var(--border-soft);
}
.result-row:first-child{ border-top:none; }
.result-row .r-label{ font-size: 13px; color: var(--text-mute); }
.result-row .r-value{ font-family: var(--font-mono); font-size: 17px; font-weight:600; color: var(--text); white-space:nowrap; }
.result-row.hl .r-value{ color: var(--green); font-size: 20px; }
.result-divider{ height:1px; background: var(--border-soft); margin: 6px 0; }

.calc-note{
  font-family: var(--font-mono); font-size: 12px; color: var(--text-faint);
  padding: 16px 26px; border-top: 1px solid var(--border-soft);
}
.calc-note a{ color: var(--text-faint); }
.calc-note a:hover{ color: var(--green); }

/* ============================================================
   WORKED-EXAMPLE TABLE
   ============================================================ */
.table-wrap{ overflow-x:auto; margin: 22px 0; }
table.worked{ width:100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13.5px; }
table.worked caption{ text-align:left; color: var(--text-faint); font-size:12px; margin-bottom:10px; font-family: var(--font-body); }
table.worked th, table.worked td{ text-align:left; padding: 11px 16px; border-bottom: 1px solid var(--border-soft); }
table.worked th{ color: var(--text-faint); font-weight:500; text-transform:uppercase; letter-spacing:0.05em; font-size:11px; }
table.worked td{ color: var(--text); }
table.worked tr:last-child td{ border-bottom:none; }

/* ============================================================
   CALLOUT (pull-quote box used within article body copy)
   ============================================================ */
.callout, .disclaimer-box{
  margin: 32px 0;
  border-left: 2px solid var(--green-dim);
  padding: 18px 22px;
  background: var(--surface);
  color: var(--text-mute);
  font-size: 14px;
  line-height: 1.7;
}
.callout strong, .disclaimer-box strong{ color: var(--text); }
.callout .callout-label{
  display:block; font-family: var(--font-mono); font-size:11px; letter-spacing:0.08em;
  text-transform:uppercase; color: var(--green); margin-bottom:8px;
}

/* ============================================================
   ARTICLE BODY (shared prose rhythm for tool + 101 pages)
   ============================================================ */
.article-body h2{ font-size: 24px; margin: 56px 0 16px; scroll-margin-top: 90px; }
.article-body h2:first-child{ margin-top:0; }
.article-body p{ color: var(--text-mute); font-size: 15.5px; line-height:1.75; margin: 0 0 18px; }
.article-body p strong{ color: var(--text); }
.article-body a{ color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.article-body ul, .article-body ol{ color: var(--text-mute); font-size:15.5px; line-height:1.75; padding-left: 22px; margin: 0 0 18px; }
.article-body li{ margin-bottom: 8px; }
.article-body li strong{ color: var(--text); }

/* ============================================================
   FAQ
   ============================================================ */
.faq-item{ padding: 22px 0; border-top: 1px solid var(--border-soft); }
.faq-item:first-child{ border-top:none; }
.faq-item h3{ font-size: 15px; text-transform:none; letter-spacing:0; margin-bottom:8px; }
.faq-item p{ color: var(--text-mute); font-size: 14.5px; margin:0; line-height:1.7; }

/* ============================================================
   RELATED / CROSS-LINK CARDS
   ============================================================ */
.related-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border-soft); border: 1px solid var(--border-soft); margin-top: 20px; }
@media (max-width: 760px){ .related-grid{ grid-template-columns: 1fr; } }
.related-card{ background: var(--bg); padding: 22px 20px; text-decoration:none; display:block; transition: background 0.15s ease; }
.related-card:hover{ background: var(--surface); }
.related-card .tag-num{ display:block; margin-bottom:10px; text-transform:uppercase; letter-spacing:0.06em; font-size:11px; color: var(--green); }
.related-card h4{ font-family: var(--font-body); font-weight:600; font-size:14.5px; color: var(--text); margin:0 0 6px; text-transform:none; letter-spacing:0; }
.related-card p{ font-size: 13px; color: var(--text-mute); margin:0; line-height:1.5; }

/* ============================================================
   101 LESSONS
   ============================================================ */
.lesson{ display:grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 34px 0; border-top: 1px solid var(--border-soft); }
.lesson:first-child{ border-top:none; }
@media (max-width: 640px){ .lesson{ grid-template-columns: 1fr; gap: 10px; } }
.lesson .lesson-num{ font-family: var(--font-mono); color: var(--green); font-size: 15px; }
.lesson h2{ font-size: 21px; margin: 0 0 12px; scroll-margin-top: 90px; }
.lesson p{ color: var(--text-mute); font-size: 15px; line-height:1.75; margin: 0 0 14px; }
.lesson p:last-child{ margin-bottom:0; }
.lesson a{ color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.lesson .lesson-links{ display:flex; gap:10px; flex-wrap:wrap; margin-top: 14px; }

/* ============================================================
   PAGE-END CTA (shared closer used on tool + 101 pages)
   ============================================================ */
.page-cta{
  background: var(--surface); border: 1px solid var(--border);
  padding: 40px 36px; text-align:center; margin-top: 8px;
}
.page-cta h2{ font-size: 24px; margin-bottom: 10px; }
.page-cta p{ color: var(--text-mute); font-size:14.5px; margin: 0 0 22px; }
.page-cta .actions{ display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }

/* ============================================================
   STAT STRIP (About page)
   ============================================================ */
.stat-strip{ display:grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); background: var(--surface); }
@media (max-width: 760px){ .stat-strip{ grid-template-columns: repeat(2, 1fr); } }
.stat-item{ padding: 28px 22px; border-right: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); text-align:center; }
.stat-item:nth-child(4n){ border-right:none; }
@media (max-width: 760px){ .stat-item:nth-child(2n){ border-right:none; } .stat-item:nth-child(4n){ border-right:1px solid var(--border-soft); } }
.stat-item .num{ font-family: var(--font-mono); font-size: 30px; font-weight:600; color: var(--green); }
.stat-item .lbl{ font-family: var(--font-mono); font-size: 11px; letter-spacing:0.08em; text-transform:uppercase; color: var(--text-faint); margin-top: 8px; }

/* ============================================================
   PULL-QUOTE (About page)
   ============================================================ */
.pullquote{ border-left: 2px solid var(--green); padding: 4px 0 4px 26px; margin: 40px 0; }
.pullquote p{ font-family: var(--font-display); font-size: clamp(20px, 2.6vw, 26px); text-transform:none; letter-spacing:0.005em; color: var(--text); line-height:1.35; margin:0; }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid{ display:grid; grid-template-columns: 1.3fr 1fr; gap: 32px; align-items:start; }
@media (max-width: 860px){ .contact-grid{ grid-template-columns: 1fr; } }
.info-card{ background: var(--surface); border: 1px solid var(--border); padding: 22px 24px; margin-bottom: 16px; }
.info-card h3{ font-size: 15px; text-transform:none; letter-spacing:0; margin-bottom: 8px; }
.info-card p{ color: var(--text-mute); font-size: 14px; margin:0; line-height:1.6; }
.info-card a{ color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
.field textarea{
  width:100%; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-family: var(--font-body); font-size: 14.5px; padding: 12px 14px; border-radius: var(--radius);
  resize: vertical; min-height: 130px;
}
.field textarea:focus{ outline:2px solid var(--green); outline-offset:0; border-color: var(--green); }
.form-note{ font-size: 12px; color: var(--text-faint); margin-top: 14px; }

/* ============================================================
   RECORDS PAGE (sport tabs + season table)
   ============================================================ */
.sport-tabs{ display:flex; gap:8px; flex-wrap:wrap; margin: 32px 0 24px; }
.sport-tab{
  font-family: var(--font-mono); font-size:12px; letter-spacing:0.05em; text-transform:uppercase;
  padding: 10px 16px; border: 1px solid var(--border); color: var(--text-mute); cursor:pointer;
  background: transparent; border-radius: var(--radius);
}
.sport-tab.active{ border-color: var(--green); color: var(--green); background: rgba(57,255,95,0.06); }
.records-panel{ display:none; }
.records-panel.active{ display:block; }
table.season-table{ width:100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13.5px; }
table.season-table th, table.season-table td{ text-align:left; padding: 12px 16px; border-bottom: 1px solid var(--border-soft); }
table.season-table th{ color: var(--text-faint); font-weight:500; text-transform:uppercase; letter-spacing:0.05em; font-size:11px; }
table.season-table td{ color: var(--text); }
table.season-table tr:last-child td{ border-bottom:none; }

/* ============================================================
   FOOTER
   ============================================================ */
footer{ padding: 56px 0 40px; }
.foot-grid{ display:flex; justify-content:space-between; flex-wrap:wrap; gap: 32px; margin-bottom: 32px; }
.foot-brand .logo{ display:block; margin-bottom: 10px; }
.foot-brand p{ color: var(--text-faint); font-size: 13px; max-width: 280px; margin:0; }
.foot-links{ display:flex; gap: 56px; flex-wrap:wrap; }
.foot-col h4{ font-family: var(--font-mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color: var(--text-faint); margin: 0 0 14px; font-weight:500; }
.foot-col a{ display:block; font-size: 14px; color: var(--text-mute); text-decoration:none; margin-bottom: 10px; }
.foot-col a:hover{ color: var(--green); }
.foot-bottom{ border-top: 1px solid var(--border-soft); padding-top: 24px; }
.foot-bottom p{ color: var(--text-faint); font-size: 12px; line-height:1.8; margin: 0 0 8px; }