/* ============================================================
   RR Golf Performance — Game Improvement Library
   Shared stylesheet for /improve/ pages
   ============================================================ */

:root {
  --navy: #0F1B35;
  --navy-mid: #2C3B5A;
  --navy-soft: #4A5A7B;
  --gold: #C3A24F;
  --gold-soft: #E5CE8C;
  --cream: #F7F2E8;
  --white: #FFFFFF;
  --light-bg: #F6F8FB;
  --rule: #DDE3EC;
  --mid-grey: #6E7890;
  --dark-text: #1F2937;
  --red-risk: #B54E3A;
  --green-good: #2E7D32;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--dark-text);
  background: var(--light-bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* -------- Top nav -------- */
.top-nav {
  background: var(--navy);
  color: var(--white);
  padding: 14px 24px;
  display: flex; justify-content: space-between; align-items: center;
  position: sticky; top: 0; z-index: 100;
  border-bottom: 2px solid var(--gold);
}
.top-nav .brand {
  font-weight: 700; letter-spacing: 2px; font-size: 13px; color: var(--white);
  text-decoration: none;
}
.top-nav .brand .diamond {
  display: inline-block; width: 10px; height: 10px; background: var(--gold);
  transform: rotate(45deg); margin-right: 10px; vertical-align: middle;
}
.top-nav .back-link {
  color: var(--gold-soft); text-decoration: none; font-size: 12px;
  letter-spacing: 1px; font-weight: 600;
}
.top-nav .back-link:hover { color: var(--white); }

/* -------- Container -------- */
.container {
  max-width: 1080px; margin: 0 auto; padding: 40px 24px 80px;
}
.narrow { max-width: 760px; }

/* -------- Breadcrumb -------- */
.breadcrumb {
  font-size: 12px; letter-spacing: 1px; color: var(--mid-grey);
  text-transform: uppercase; font-weight: 600; margin-bottom: 18px;
}
.breadcrumb a { color: var(--mid-grey); text-decoration: none; }
.breadcrumb a:hover { color: var(--navy); }
.breadcrumb span { color: var(--gold); margin: 0 8px; }

/* -------- Library home -------- */
.library-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: var(--white);
  border-radius: 14px; padding: 56px 48px;
  margin-bottom: 40px; position: relative; overflow: hidden;
}
.library-hero::before {
  content: ''; position: absolute; top: 0; right: 0;
  width: 200px; height: 200px; background: var(--gold); opacity: 0.08;
  border-radius: 50%; transform: translate(60px, -60px);
}
.library-hero .badge {
  display: inline-block; background: var(--gold); color: var(--navy);
  padding: 5px 12px; font-size: 10px; letter-spacing: 2px;
  font-weight: 700; border-radius: 3px; margin-bottom: 18px;
}
.library-hero h1 {
  font-size: clamp(30px, 5vw, 44px); line-height: 1.15;
  margin: 0 0 14px 0; color: var(--white); font-weight: 700;
}
.library-hero h1 em { color: var(--gold); font-style: italic; }
.library-hero p {
  font-size: 17px; line-height: 1.55; color: #D8DEE8;
  max-width: 620px; margin: 0;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.category-card {
  background: var(--white); border: 1px solid var(--rule);
  border-radius: 12px; padding: 28px 24px;
  text-decoration: none; color: var(--dark-text);
  transition: all 0.18s ease;
  border-top: 3px solid var(--gold);
  display: flex; flex-direction: column;
}
.category-card:hover {
  transform: translateY(-3px); border-color: var(--gold);
  box-shadow: 0 10px 24px rgba(15, 27, 53, 0.08);
}
.category-card .cc-kicker {
  font-size: 10px; letter-spacing: 2px; color: var(--gold);
  font-weight: 700; margin-bottom: 10px;
}
.category-card h2 {
  font-size: 22px; color: var(--navy); margin: 0 0 10px 0;
  line-height: 1.2;
}
.category-card .cc-desc {
  font-size: 14px; color: var(--mid-grey); line-height: 1.55;
  margin-bottom: 16px; flex-grow: 1;
}
.category-card .cc-count {
  font-size: 12px; letter-spacing: 1px; color: var(--navy);
  font-weight: 600; text-transform: uppercase; margin-top: auto;
}

/* -------- Section page layout -------- */
.section-header {
  margin-bottom: 36px; padding-bottom: 24px;
  border-bottom: 2px solid var(--gold);
}
.section-header .sh-kicker {
  font-size: 11px; letter-spacing: 2px; color: var(--gold);
  font-weight: 700; text-transform: uppercase; margin-bottom: 8px;
}
.section-header h1 {
  font-size: clamp(28px, 4vw, 36px); color: var(--navy);
  margin: 0 0 10px 0; line-height: 1.2; font-weight: 700;
}
.section-header .sh-intro {
  color: var(--navy-mid); font-size: 16px; line-height: 1.6;
  max-width: 720px; margin: 0;
}

.toc-card {
  background: var(--white); border: 1px solid var(--rule);
  border-left: 3px solid var(--gold);
  border-radius: 8px; padding: 22px 26px; margin-bottom: 40px;
}
.toc-card .toc-label {
  font-size: 10px; letter-spacing: 2px; color: var(--gold);
  font-weight: 700; margin-bottom: 12px; text-transform: uppercase;
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { margin-bottom: 8px; }
.toc-list a {
  color: var(--navy); text-decoration: none; font-weight: 600; font-size: 15px;
  display: flex; align-items: baseline; gap: 10px;
}
.toc-list a:hover { color: var(--gold); }
.toc-list a::before {
  content: ''; display: inline-block; width: 6px; height: 6px;
  background: var(--gold); border-radius: 50%; flex-shrink: 0;
}

/* -------- Article layout -------- */
.article {
  background: var(--white); border: 1px solid var(--rule);
  border-radius: 12px; padding: 44px 40px; margin-bottom: 28px;
  max-width: 760px;
}
.article .article-kicker {
  font-size: 10px; letter-spacing: 2px; color: var(--gold);
  font-weight: 700; text-transform: uppercase; margin-bottom: 10px;
}
.article h2 {
  font-size: clamp(24px, 3.2vw, 30px); color: var(--navy);
  margin: 0 0 14px 0; line-height: 1.2; font-weight: 700;
  scroll-margin-top: 80px;
}
.article .subtitle {
  font-size: 16px; color: var(--navy-mid); font-style: italic;
  margin: 0 0 24px 0; line-height: 1.5;
}
.article p {
  font-size: 16px; line-height: 1.7; color: var(--dark-text);
  margin: 0 0 16px 0;
}
.article p strong { color: var(--navy); font-weight: 700; }
.article h3 {
  color: var(--navy); font-size: 18px; margin: 28px 0 12px 0;
  font-weight: 700; letter-spacing: 0.3px;
}
.article h4 {
  color: var(--gold); font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase; font-weight: 700;
  margin: 24px 0 10px 0;
}
.article ul, .article ol {
  margin: 0 0 18px 0; padding-left: 22px;
}
.article li {
  font-size: 16px; line-height: 1.65; margin-bottom: 8px;
  color: var(--dark-text);
}
.article li strong { color: var(--navy); }
.article blockquote {
  border-left: 3px solid var(--gold);
  background: var(--cream);
  padding: 16px 22px; margin: 20px 0;
  font-style: italic; color: var(--navy); line-height: 1.55;
  border-radius: 4px;
}
.article .callout {
  background: var(--light-bg); border: 1px solid var(--rule);
  border-left: 3px solid var(--navy);
  padding: 16px 20px; margin: 20px 0; border-radius: 4px;
  font-size: 15px; line-height: 1.55; color: var(--navy-mid);
}
.article .callout strong { color: var(--navy); }
.article .warning {
  background: #FDF0EE; border: 1px solid #F3CFC8;
  border-left: 3px solid var(--red-risk);
  padding: 16px 20px; margin: 20px 0; border-radius: 4px;
  font-size: 14px; line-height: 1.55; color: var(--navy);
}
.article .warning strong { color: var(--red-risk); letter-spacing: 0.5px; }
.article .key-point {
  background: linear-gradient(to right, rgba(195, 162, 79, 0.12), transparent);
  border-left: 3px solid var(--gold);
  padding: 18px 24px; margin: 24px 0; border-radius: 4px;
}
.article .key-point .kp-label {
  font-size: 10px; letter-spacing: 2px; color: var(--gold);
  font-weight: 700; margin-bottom: 6px;
}
.article .key-point p {
  margin: 0; font-size: 17px; line-height: 1.5; color: var(--navy);
  font-weight: 600;
}

/* -------- Data tables -------- */
.stat-table {
  width: 100%; border-collapse: collapse; margin: 20px 0;
  font-variant-numeric: tabular-nums;
}
.stat-table th {
  background: var(--navy); color: var(--white);
  padding: 10px 12px; text-align: left;
  font-size: 12px; letter-spacing: 1px;
}
.stat-table th:not(:first-child) { text-align: center; }
.stat-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--rule);
  font-size: 14px;
}
.stat-table td:not(:first-child) { text-align: center; }
.stat-table tr:nth-child(even) td { background: var(--light-bg); }
.stat-table td.bar-cell { position: relative; padding: 0; }
.stat-table .bar {
  display: block; height: 100%; background: var(--gold);
  padding: 10px 12px; color: var(--navy); font-weight: 700;
  text-align: right;
}
.stat-table td strong { color: var(--navy); }
.stat-caption {
  font-size: 11px; color: var(--mid-grey); text-align: center;
  margin-top: -8px; margin-bottom: 20px; letter-spacing: 0.5px;
}

/* -------- Practice plan cards -------- */
.plan-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px; margin: 18px 0;
}
.plan-card {
  background: var(--light-bg); border: 1px solid var(--rule);
  border-top: 3px solid var(--navy); border-radius: 8px; padding: 18px 20px;
}
.plan-card h5 {
  margin: 0 0 10px 0; color: var(--navy); font-size: 14px;
  letter-spacing: 0.5px;
}
.plan-card ol {
  margin: 0; padding-left: 18px; font-size: 14px; line-height: 1.6;
  color: var(--navy-mid);
}
.plan-card li { margin-bottom: 6px; }

/* -------- Article navigation -------- */
.article-nav {
  display: flex; justify-content: space-between;
  gap: 14px; margin: 28px 0 0 0;
  padding-top: 22px; border-top: 1px solid var(--rule);
  font-size: 13px;
}
.article-nav a {
  color: var(--navy); text-decoration: none;
  font-weight: 600; line-height: 1.4;
}
.article-nav a:hover { color: var(--gold); }
.article-nav .nav-label {
  font-size: 10px; letter-spacing: 1.5px; color: var(--mid-grey);
  text-transform: uppercase; margin-bottom: 4px; font-weight: 600;
}
.article-nav .prev { text-align: left; }
.article-nav .next { text-align: right; margin-left: auto; }

/* -------- Sources -------- */
.sources {
  background: var(--light-bg); border: 1px solid var(--rule);
  border-radius: 6px; padding: 18px 22px; margin-top: 24px;
  font-size: 12px; line-height: 1.6;
}
.sources h5 {
  margin: 0 0 8px 0; font-size: 10px; letter-spacing: 2px;
  color: var(--mid-grey); text-transform: uppercase; font-weight: 700;
}
.sources ul {
  margin: 0; padding-left: 18px; color: var(--mid-grey);
}
.sources a { color: var(--navy-mid); }
.sources a:hover { color: var(--gold); }

/* -------- Loading / auth guard -------- */
.auth-gate {
  display: flex; align-items: center; justify-content: center;
  min-height: 60vh; color: var(--mid-grey); font-size: 14px;
}

/* -------- Mobile -------- */
@media (max-width: 640px) {
  .container { padding: 24px 16px 60px; }
  .library-hero { padding: 36px 24px; }
  .article { padding: 28px 22px; }
  .top-nav { padding: 12px 16px; }
  .top-nav .brand { font-size: 11px; letter-spacing: 1.5px; }
  .article-nav { flex-direction: column; gap: 12px; }
  .article-nav .next { text-align: left; margin-left: 0; }
}