/* ============================================================================
   blog.css — Sargazo Watch journal (index + articles). Pairs with ../sitebar.css
   ============================================================================ */
:root{
  --accent:#006d99; --accent-bright:#18a8c9;
  --ink:#0c1d28; --ink-soft:#41525d; --ink-faint:#7d8a93;
  --line:rgba(12,29,40,.10); --surface:#fff; --surface-warm:#f6f4ef;
  --radius:18px; --radius-sm:12px;
  --shadow-sm:0 1px 2px rgba(12,29,40,.06), 0 4px 14px rgba(12,29,40,.07);
  --shadow-md:0 6px 20px rgba(12,29,40,.10), 0 24px 60px rgba(12,29,40,.14);
  --font:"Manrope",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;}
body{font-family:var(--font); color:var(--ink); background:var(--surface-warm); -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;}
a{color:var(--accent); text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%; display:block;}

.bl-wrap{max-width:1120px; margin:0 auto; padding:30px 24px 90px;}
.bl-read{max-width:720px; margin:0 auto; padding:24px 24px 96px;}

/* ---- index hero ---- */
.bl-masthead{padding:24px 0 30px; border-bottom:1px solid var(--line); margin-bottom:34px;}
.bl-eyebrow{font-size:11px; font-weight:800; letter-spacing:.16em; text-transform:uppercase; color:var(--accent); margin:0 0 10px;}
.bl-masthead h1{font-size:clamp(30px,4.6vw,48px); line-height:1.0; letter-spacing:-.035em; font-weight:800; margin:0 0 12px;}
.bl-masthead p{font-size:16.5px; line-height:1.5; color:var(--ink-soft); margin:0; max-width:62ch;}

/* ---- featured ---- */
.bl-featured{display:grid; grid-template-columns:1.15fr .85fr; gap:0; border-radius:var(--radius); overflow:hidden; background:var(--surface); box-shadow:var(--shadow-md); border:1px solid rgba(12,29,40,.05); margin-bottom:40px;}
.bl-featured .ph{position:relative; min-height:320px; background:#0a4a63; display:block;}
.bl-featured .ph img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover;}
.bl-featured .bd{padding:34px 36px; display:flex; flex-direction:column; justify-content:center;}
.bl-tag{display:inline-flex; align-items:center; align-self:flex-start; gap:6px; font-size:11px; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:var(--accent); background:rgba(0,109,153,.09); padding:5px 11px; border-radius:999px; margin-bottom:14px;}
.bl-featured h2{font-size:clamp(22px,2.6vw,30px); line-height:1.1; letter-spacing:-.025em; font-weight:800; margin:0 0 12px;}
.bl-featured h2 a{color:var(--ink);}
.bl-featured h2 a:hover{color:var(--accent); text-decoration:none;}
.bl-featured .ex{font-size:15px; line-height:1.55; color:var(--ink-soft); margin:0 0 18px;}
.bl-meta{font-size:12.5px; color:var(--ink-faint); font-weight:650; display:flex; gap:8px; align-items:center;}
.bl-meta .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.5;}

/* ---- grid ---- */
.bl-sectitle{font-size:13px; font-weight:800; letter-spacing:.04em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 18px;}
.bl-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.bl-card{display:flex; flex-direction:column; border-radius:var(--radius); overflow:hidden; background:var(--surface); box-shadow:var(--shadow-sm); border:1px solid rgba(12,29,40,.05); transition:transform .16s, box-shadow .16s;}
.bl-card:hover{transform:translateY(-3px); box-shadow:var(--shadow-md); text-decoration:none;}
.bl-card .ph{aspect-ratio:16/10; background:#0a4a63; position:relative;}
.bl-card .ph img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover;}
.bl-card .bd{padding:18px 20px 20px; display:flex; flex-direction:column; flex:1;}
.bl-card .bl-tag{font-size:10px; margin-bottom:11px;}
.bl-card h3{font-size:18px; line-height:1.2; letter-spacing:-.02em; font-weight:800; margin:0 0 9px; color:var(--ink);}
.bl-card .ex{font-size:13.5px; line-height:1.5; color:var(--ink-soft); margin:0 0 16px; flex:1;}
.bl-card .bl-meta{font-size:12px;}

/* ---- article reading view ---- */
.bl-back{display:inline-flex; align-items:center; gap:7px; font-size:13px; font-weight:700; color:var(--ink-soft); margin-bottom:22px;}
.bl-back:hover{color:var(--accent); text-decoration:none;}
.bl-arthead .bl-tag{margin-bottom:16px;}
.bl-arthead h1{font-size:clamp(28px,4vw,42px); line-height:1.06; letter-spacing:-.03em; font-weight:800; margin:0 0 16px; text-wrap:balance;}
.bl-arthead .bl-meta{font-size:13.5px; margin-bottom:26px;}
.bl-avatar{width:30px;height:30px;border-radius:50%;background:radial-gradient(120% 120% at 30% 20%,var(--accent-bright),var(--accent) 70%);display:inline-grid;place-items:center;color:#fff;font-size:12px;font-weight:800;}
.bl-hero{border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow-md); margin:0 0 14px; aspect-ratio:16/9; background:#0a4a63;}
.bl-hero img{width:100%; height:100%; object-fit:cover;}
.bl-credit{font-size:11.5px; color:var(--ink-faint); font-weight:600; margin:0 0 34px; text-align:center;}

.bl-body{font-size:17.5px; line-height:1.72; color:#1c2c36;}
.bl-body > p{margin:0 0 22px;}
.bl-body h2{font-size:25px; line-height:1.18; letter-spacing:-.02em; font-weight:800; margin:42px 0 14px; color:var(--ink);}
.bl-body h3{font-size:19px; line-height:1.25; letter-spacing:-.01em; font-weight:750; margin:32px 0 10px; color:var(--ink);}
.bl-body a{font-weight:600; text-decoration:underline; text-underline-offset:2px;}
.bl-body strong{font-weight:750; color:var(--ink);}
.bl-body ul,.bl-body ol{margin:0 0 22px; padding-left:24px;}
.bl-body li{margin:0 0 9px;}
.bl-body blockquote{margin:30px 0; padding:4px 0 4px 22px; border-left:3px solid var(--accent); font-size:20px; line-height:1.5; font-weight:600; color:var(--ink); font-style:italic;}
.bl-body figure{margin:30px 0;}
.bl-body figure img{border-radius:var(--radius); box-shadow:var(--shadow-sm);}
.bl-body figcaption{font-size:12.5px; color:var(--ink-faint); font-weight:600; text-align:center; margin-top:9px;}
.bl-callout{margin:30px 0; padding:18px 22px; border-radius:var(--radius); background:#eaf4f7; border:1px solid rgba(0,109,153,.14);}
.bl-callout p{margin:0; font-size:15px; line-height:1.6; color:#0c3a4d;}
.bl-callout strong{color:#062a38;}

/* ===== table of contents (deep guide) ===== */
.bl-toc{margin:30px 0; padding:20px 24px; border-radius:var(--radius); background:var(--surface); box-shadow:var(--shadow-sm); border:1px solid rgba(12,29,40,.06);}
.bl-toc strong{display:block; font-size:13px; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 12px;}
.bl-toc ul{margin:0; padding:0; list-style:none; columns:2; column-gap:30px;}
.bl-toc li{margin:0 0 9px; break-inside:avoid;}
.bl-toc a{font-weight:650; text-decoration:none; color:var(--accent);}
.bl-toc a:hover{text-decoration:underline;}
.bl-body h2[id]{scroll-margin-top:84px;}

/* ===== plain numbered list block (cenotes) ===== */
.bl-list{margin:24px 0;}
.bl-list p{margin:0 0 14px; font-size:16.5px; line-height:1.6;}

@media (max-width:640px){ .bl-toc ul{columns:1;} }

.bl-artfoot{margin-top:48px; padding-top:26px; border-top:1px solid var(--line);}
.bl-cta{display:flex; align-items:center; gap:16px; flex-wrap:wrap; padding:22px 26px; border-radius:var(--radius); background:linear-gradient(120deg,#063b51,#006d99); color:#fff; box-shadow:var(--shadow-md);}
.bl-cta .ct{font-size:16px; font-weight:750;}
.bl-cta .cs{font-size:13px; opacity:.85; margin-top:2px;}
.bl-cta a.btn{margin-left:auto; background:#fff; color:var(--accent); font-weight:750; font-size:14px; padding:11px 20px; border-radius:999px; white-space:nowrap;}
.bl-cta a.btn:hover{text-decoration:none;}

@media (max-width:820px){
  .bl-grid{grid-template-columns:repeat(2,1fr); gap:18px;}
  .bl-featured{grid-template-columns:1fr;}
  .bl-featured .ph{min-height:200px;}
  .bl-featured .bd{padding:26px 24px;}
}
@media (max-width:540px){
  .bl-grid{grid-template-columns:1fr;}
  .bl-wrap{padding:22px 16px 70px;}
  .bl-read{padding:18px 18px 72px;}
  .bl-cta a.btn{margin-left:0;}
}

/* ===== mobile blog index: drop the duplicate featured, push the season card last ===== */
@media (max-width:760px){
  .bl-featured{display:none;}
  .bl-masthead{margin-bottom:26px;}
  .bl-grid .bl-card:nth-child(1){order:1;}   /* "season" card → to the end */
}

/* ===== Quick Facts box (TL;DR) ===== */
.bl-facts{margin:6px 0 34px; border-radius:var(--radius); background:var(--surface); box-shadow:var(--shadow-sm); border:1px solid rgba(12,29,40,.06); overflow:hidden;}
.bl-facts .ff-head{display:flex; align-items:center; gap:9px; padding:14px 22px; background:linear-gradient(180deg,#eef5f7,#e6eff2); border-bottom:1px solid rgba(12,29,40,.07); font-size:12px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:var(--accent);}
.bl-facts dl{margin:0; padding:8px 22px 18px; display:grid; grid-template-columns:1fr 1fr; gap:0 28px;}
.bl-facts .ff{padding:13px 0; border-bottom:1px solid var(--line); display:flex; flex-direction:column; gap:3px;}
.bl-facts dl .ff:nth-last-child(-n+2){border-bottom:none;}
.bl-facts dt{font-size:11.5px; font-weight:750; letter-spacing:.02em; text-transform:uppercase; color:var(--ink-faint);}
.bl-facts dd{margin:0; font-size:15px; line-height:1.4; font-weight:650; color:var(--ink);}
.bl-facts dd b{color:var(--accent); font-weight:800;}
@media (max-width:600px){ .bl-facts dl{grid-template-columns:1fr; padding-bottom:8px;} .bl-facts .ff{border-bottom:1px solid var(--line);} .bl-facts dl .ff:last-child{border-bottom:none;} }

/* ===== Process infographic (offshore → transport → beach → decomposition → impact) ===== */
.bl-flow{margin:30px 0; padding:24px 22px; border-radius:var(--radius); background:linear-gradient(135deg,#063b51,#0a6f8f); box-shadow:var(--shadow-md);}
.bl-flow .fl-title{font-size:12px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:rgba(255,255,255,.7); margin-bottom:18px; text-align:center;}
.bl-flow .fl-steps{display:flex; align-items:stretch; gap:0;}
.bl-flow .fl-step{flex:1; display:flex; flex-direction:column; align-items:center; text-align:center; gap:9px; padding:0 6px; position:relative;}
.bl-flow .fl-ic{width:50px; height:50px; border-radius:14px; display:grid; place-items:center; background:rgba(255,255,255,.13); color:#fff; box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);}
.bl-flow .fl-step b{font-size:13px; font-weight:750; color:#fff; line-height:1.2;}
.bl-flow .fl-step span{font-size:11.5px; line-height:1.35; color:rgba(255,255,255,.72);}
.bl-flow .fl-step:not(:last-child)::after{content:"›"; position:absolute; right:-7px; top:16px; font-size:22px; font-weight:700; color:rgba(255,255,255,.45); z-index:2;}
@media (max-width:620px){
  .bl-flow .fl-steps{flex-direction:column; gap:6px;}
  .bl-flow .fl-step{flex-direction:row; text-align:left; gap:14px; padding:8px 0;}
  .bl-flow .fl-ic{flex:none;}
  .bl-flow .fl-step:not(:last-child)::after{content:"⌄"; right:auto; left:18px; top:auto; bottom:-12px; font-size:18px;}
}

/* ===== stat highlight pull ===== */
.bl-stat{margin:30px 0; padding:22px 26px; border-radius:var(--radius); background:#fff7ec; border:1px solid #f2dfbd; display:flex; align-items:center; gap:22px;}
.bl-stat .num{font-size:46px; font-weight:800; letter-spacing:-.03em; color:#c47d1a; line-height:1; flex:none;}
.bl-stat .txt{font-size:14px; line-height:1.5; color:#6b5224;}
.bl-stat .txt b{color:#5a4111; font-weight:750;}
@media (max-width:540px){ .bl-stat{flex-direction:column; align-items:flex-start; gap:10px;} .bl-stat .num{font-size:38px;} }

/* ===== sub-section divider label (for the marine-life numbered impacts) ===== */
.bl-body h3.numbered{display:flex; align-items:baseline; gap:11px;}
.bl-body h3.numbered .n{font-size:14px; font-weight:800; color:var(--accent); background:rgba(0,109,153,.1); width:26px; height:26px; border-radius:8px; display:inline-grid; place-items:center; flex:none; align-self:flex-start;}

/* ===== inline citation markers + Sources list ===== */
.bl-body a.ref{text-decoration:none; font-weight:700; color:var(--accent);}
.bl-body a.ref sup{font-size:11px; letter-spacing:-.02em; padding-left:1px;}
.bl-body a.ref:hover sup{text-decoration:underline;}
.bl-refs{margin:46px 0 0; padding:24px 26px; border-radius:var(--radius); background:var(--surface); box-shadow:var(--shadow-sm); border:1px solid rgba(12,29,40,.06); scroll-margin-top:80px;}
.bl-refs h2{font-size:14px; font-weight:800; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-faint); margin:0 0 14px;}
.bl-refs ol{margin:0; padding-left:22px;}
.bl-refs li{font-size:13.5px; line-height:1.55; color:var(--ink-soft); margin:0 0 9px; padding-left:4px;}
.bl-refs li:last-child{margin-bottom:0;}
.bl-refs li::marker{color:var(--accent); font-weight:700;}

/* ===== consensus two-column block (agreed vs. still studied) ===== */
.bl-twocol{display:grid; grid-template-columns:1fr 1fr; gap:18px; margin:28px 0;}
.bl-evbox{border-radius:var(--radius); padding:20px 22px; border:1px solid;}
.bl-evbox.strong{background:#edf7f0; border-color:#cfe8d8;}
.bl-evbox.open{background:#fff6ea; border-color:#f1e1c4;}
.bl-evbox .ev-h{display:flex; align-items:center; gap:9px; font-size:13px; font-weight:800; letter-spacing:.02em; margin-bottom:13px;}
.bl-evbox.strong .ev-h{color:#1c7a48;}
.bl-evbox.open .ev-h{color:#b3791d;}
.bl-evbox ul{margin:0; padding:0; list-style:none;}
.bl-evbox li{position:relative; padding-left:24px; margin:0 0 10px; font-size:14px; line-height:1.5; color:var(--ink-soft);}
.bl-evbox li:last-child{margin-bottom:0;}
.bl-evbox.strong li::before{content:""; position:absolute; left:2px; top:6px; width:11px; height:7px; border-left:2.5px solid #2ba35e; border-bottom:2.5px solid #2ba35e; transform:rotate(-45deg);}
.bl-evbox.open li::before{content:"?"; position:absolute; left:3px; top:0; font-weight:800; color:#c99232;}
@media (max-width:600px){ .bl-twocol{grid-template-columns:1fr;} }