/*
Theme Name: OpalDaily Tidal Chart Almanac
Theme URI: https://opaldaily.com/
Author: OpalDaily
Description: Premium business-news theme inspired by admiralty charts and tide-table almanacs: flat depth bands, real-data soundings, dotted contours, tidal curves and restrained shoal hatching.
Version: 1.0.0
Requires at least: 6.5
Tested up to: 7.1
Requires PHP: 7.4
Text Domain: opaldaily
*/

/* ==========================================================
STEP 0A — EXACT DESIGN TOKENS
========================================================== */
:root{
  --opd-shore:#EFE6D2;
  --opd-cream:#F6F1E2;
  --opd-d1:#D9E4DC;
  --opd-d2:#B8CFC8;
  --opd-d3:#8FB3AE;
  --opd-d4:#5A8A8C;
  --opd-d5:#2E5C66;
  --opd-ink:#1A2224;
  --opd-faded:#67736F;
  --opd-curve:#27456B;
  --opd-hazard:#A8305F;
  --opd-curve-width:2px;
  --opd-curve-amplitude:72px;
  --opd-sounding-xs:10px;
  --opd-sounding-sm:11px;
  --opd-sounding-md:12px;
  --opd-hatch-angle:45deg;
  --opd-hatch-spacing:6px;
  --opd-container:1440px;
  --opd-reading:900px;
  --opd-wide:1160px;
  --opd-display:Georgia,"Times New Roman",serif;
  --opd-body:Arial,Helvetica,sans-serif;
  --opd-mono:"Courier New",Courier,monospace;
}

/* ==========================================================
STEP 0B-1 — TIDAL CURVE: CSS-only smooth arc, no SVG file.
Fallback is a straight line; @supports adds the high/low arc.
========================================================== */
.opd-tidal-curve{position:relative;height:calc(var(--opd-curve-amplitude) + 20px);max-width:1180px;margin:0 auto;color:var(--opd-curve);overflow:hidden}
.opd-tidal-curve::before{content:"";position:absolute;left:2%;right:2%;top:50%;border-top:var(--opd-curve-width) solid currentColor}
@supports (clip-path:inset(0 round 50%)){
  .opd-tidal-curve::before{left:8%;right:8%;top:8%;height:calc(var(--opd-curve-amplitude) * 1.25);border:var(--opd-curve-width) solid currentColor;border-bottom:0;border-radius:50% 50% 0 0 / 100% 100% 0 0;clip-path:inset(0 0 46% 0)}
  .opd-curve-2::before{transform:scaleY(-1);top:auto;bottom:8%}
  .opd-curve-3::before{left:20%;right:-10%;transform:translateX(-8%)}
}
.opd-tide-mark{position:absolute;width:9px;height:9px;border:2px solid var(--opd-curve);border-radius:50%;background:var(--opd-cream);left:50%;transform:translateX(-50%);z-index:2}
.opd-tide-high{top:6px;background:var(--opd-curve)}.opd-tide-low{bottom:6px;background:var(--opd-cream)}
.opd-tide-data{display:block;text-align:center;margin:-10px auto 22px;font:700 11px/1.2 var(--opd-mono);letter-spacing:.08em;color:var(--opd-faded);text-transform:uppercase}

/* ==========================================================
STEP 0B-2 — DEPTH BAND: flat tint + dotted depth contour.
No blended band transitions.
========================================================== */
.opd-depth-1{background:var(--opd-d1);color:var(--opd-ink)}
.opd-depth-2{background:var(--opd-d2);color:var(--opd-ink)}
.opd-depth-3{background:var(--opd-d3);color:var(--opd-ink)}
.opd-depth-4{background:var(--opd-d4);color:var(--opd-cream)}
.opd-depth-5{background:var(--opd-d5);color:var(--opd-cream)}
.opd-depth-contour{height:2px;width:100%;background-image:repeating-linear-gradient(90deg,rgba(26,34,36,.45) 0 2px,transparent 2px 8px);background-size:auto 2px;background-repeat:repeat-x;pointer-events:none}
.opd-depth-4>.opd-depth-contour,.opd-depth-5>.opd-depth-contour{background-image:repeating-linear-gradient(90deg,rgba(246,241,226,.58) 0 2px,transparent 2px 8px)}

/* ==========================================================
STEP 0B-3 — SHOAL HATCH: alert-only 45° magenta hatch.
========================================================== */
.opd-shoal-hatch{position:absolute;inset:0 auto 0 0;width:24px;background-image:repeating-linear-gradient(var(--opd-hatch-angle),transparent 0 calc(var(--opd-hatch-spacing) - 1px),var(--opd-hazard) calc(var(--opd-hatch-spacing) - 1px) var(--opd-hatch-spacing));pointer-events:none}

*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--opd-cream)}body{margin:0;background:var(--opd-cream);color:var(--opd-ink);font:16px/1.65 var(--opd-body);overflow-x:hidden;text-rendering:optimizeLegibility}img{max-width:100%;height:auto}a{color:inherit}button,input,textarea{font:inherit}.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.screen-reader-text:focus{clip:auto!important;width:auto;height:auto;top:10px;left:10px;background:var(--opd-cream);color:var(--opd-ink);padding:10px 14px;z-index:9999}.opd-container{width:min(calc(100% - 48px),var(--opd-container));margin-inline:auto}.opd-main{min-height:60vh}.opd-kicker,.opd-tier-label,.opd-sounding,.opd-meta,.opd-register-sounding,.opd-register-section,.opd-tide-data,.opd-alert-label,.opd-ad-label{font-family:var(--opd-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.opd-kicker{font-family:var(--opd-display);font-style:italic;letter-spacing:.08em;text-decoration:none}.opd-tier-label{display:inline-block;margin-right:12px;font-weight:700}.opd-depth-4 .opd-tier-label,.opd-depth-5 .opd-tier-label{color:var(--opd-cream)}.opd-section-heading{display:flex;align-items:baseline;gap:18px;margin:0 0 24px}.opd-section-heading>span{font:700 11px/1 var(--opd-mono);letter-spacing:.09em;color:var(--opd-faded)}.opd-section-heading h2{font:600 clamp(28px,3vw,34px)/1.1 var(--opd-display);font-style:italic;letter-spacing:.05em;margin:0}

/* Header */
.opd-site-header{position:sticky;top:0;z-index:100;padding:18px 0 0;transition:padding .2s ease}.admin-bar .opd-site-header{top:32px}.opd-header-inner{display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(110px,1fr);gap:30px;align-items:center}.opd-brand{display:inline-flex;align-items:center;width:max-content}.opd-logo-image{display:block;width:auto;height:auto;max-width:220px;max-height:52px;object-fit:contain}.opd-logo-fallback{width:190px;max-height:48px}.opd-nav ul{display:flex;gap:30px;align-items:center;justify-content:center;list-style:none;margin:0;padding:0}.opd-nav a{position:relative;color:var(--opd-cream);font:italic 600 13px/1.2 var(--opd-display);letter-spacing:.08em;text-decoration:none}.opd-nav .current-menu-item>a::after,.opd-nav .current-menu-ancestor>a::after{content:"";position:absolute;left:10%;right:10%;bottom:-10px;height:7px;border-top:2px solid var(--opd-cream);border-radius:50%}.opd-header-actions{text-align:right}.opd-search-toggle{appearance:none;border:1px solid rgba(246,241,226,.75);background:transparent;color:var(--opd-cream);padding:9px 14px;font:700 11px/1 var(--opd-mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer}.opd-header-trust{display:flex;gap:18px;padding:10px 0 12px;color:var(--opd-cream);font:10px/1.2 var(--opd-mono);letter-spacing:.09em;text-transform:uppercase}.opd-search-panel{background:var(--opd-cream);color:var(--opd-ink);padding:18px 0;border-bottom:1px solid var(--opd-faded)}.opd-search-form{display:grid;grid-template-columns:1fr auto;gap:10px;max-width:760px;margin:auto}.opd-search-form input{width:100%;background:transparent;border:0;border-bottom:2px solid var(--opd-curve);padding:10px 4px;font-family:var(--opd-mono)}.opd-search-form button{border:1px solid var(--opd-curve);background:var(--opd-d1);color:var(--opd-ink);padding:9px 18px;font-family:var(--opd-mono)}

/* Chart imagery */
.opd-chart-photo{position:relative;padding:4px;background:currentColor;border:1px solid var(--opd-ink);overflow:hidden}.opd-depth-4 .opd-chart-photo,.opd-depth-5 .opd-chart-photo{border-color:var(--opd-cream)}.opd-chart-photo img{display:block;width:100%;height:auto;filter:contrast(1.05) saturate(.95)}.opd-sounding{display:inline-block;font-size:11px;font-weight:700}.opd-chart-photo>.opd-sounding{position:absolute;right:9px;bottom:9px;background:var(--opd-cream);color:var(--opd-ink);padding:4px 6px;border:1px solid var(--opd-ink)}.opd-chart-symbol{position:absolute;left:10px;bottom:10px;width:20px;height:20px;background:var(--opd-cream);color:var(--opd-ink);display:grid;place-items:center;font-size:10px;border:1px solid var(--opd-ink)}

/* Hero */
.opd-deep-water{padding:54px 0 0}.opd-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center;padding-bottom:48px}.opd-hero-copy h1{font:600 clamp(42px,5vw,52px)/1.02 var(--opd-display);margin:.2em 0 .34em;letter-spacing:-.025em}.opd-hero-copy h1 a{text-decoration:none}.opd-dek{font-size:18px;line-height:1.58;margin:0 0 18px;max-width:680px}.opd-depth-4 .opd-dek,.opd-depth-5 .opd-dek{color:var(--opd-cream)}.opd-meta{display:flex;gap:7px;flex-wrap:wrap;align-items:center;color:var(--opd-faded)}.opd-on-deep{color:var(--opd-cream)!important}.opd-on-deep a{color:var(--opd-cream)}

/* Feature row */
.opd-sounding-row{padding:58px 0}.opd-feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.opd-feature-card{position:relative;padding:22px;min-width:0}.opd-feature-card>.opd-depth-contour{position:absolute;left:0;right:0;bottom:0}.opd-feature-card .opd-card-copy{padding-top:16px}.opd-feature-card h3{font:600 24px/1.12 var(--opd-display);margin:8px 0 10px}.opd-feature-card h3 a{text-decoration:none}.opd-feature-card p{font-size:15px;line-height:1.55;margin:0 0 14px}.opd-depth-4.opd-feature-card p{color:var(--opd-cream)}.opd-feature-card:hover{background:var(--opd-d4);color:var(--opd-cream)}.opd-depth-4.opd-feature-card:hover{background:var(--opd-d5)}.opd-feature-card:hover .opd-meta,.opd-feature-card:hover .opd-kicker{color:inherit}.opd-feature-card:hover .opd-sounding{font-weight:800}

/* Tide table */
.opd-tide-table-section{padding:56px 0 0}.opd-table-scroll{overflow-x:auto;padding-bottom:34px}.opd-tide-table{width:100%;min-width:720px;border-collapse:collapse;background:var(--opd-d1);font-family:var(--opd-mono);font-variant-numeric:tabular-nums}.opd-tide-table caption{text-align:left;padding:0 0 14px;color:var(--opd-faded);font:12px/1.5 var(--opd-body)}.opd-tide-table th,.opd-tide-table td{padding:16px 18px;border-bottom:1px solid rgba(26,34,36,.28);text-align:left}.opd-tide-table thead th{font-size:11px;letter-spacing:.1em;text-transform:uppercase}.opd-tide-table tbody th{font-weight:500}.opd-tide-table td{font-size:20px;font-weight:700}

/* Shoal */
.opd-shoal-section{padding:58px 0 0}.opd-shoal-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding-bottom:50px}.opd-shoal-card{position:relative;padding:22px 20px 22px 28px;border:1px solid rgba(26,34,36,.28);min-width:0}.opd-shoal-card h3{font:600 21px/1.15 var(--opd-display);margin:8px 0}.opd-shoal-card h3 a{text-decoration:none}.opd-shoal-card p{font-size:14px;line-height:1.5}.opd-alert-label{display:block;color:var(--opd-hazard);font-weight:800;margin-bottom:8px}.opd-hazard-card{padding-left:40px}

/* Register */
.opd-chart-register{padding:54px 0 62px}.opd-register-row{display:grid;grid-template-columns:110px minmax(0,1fr) 150px;gap:20px;align-items:center;padding:15px 0;border-bottom:1px dotted rgba(26,34,36,.48)}.opd-register-sounding{font-weight:700;color:var(--opd-faded)}.opd-register-main{display:flex;align-items:baseline;gap:14px;min-width:0}.opd-register-main h3{font:500 20px/1.25 var(--opd-display);margin:0;flex:1}.opd-register-main h3 a{text-decoration:none}.opd-register-section{font-family:var(--opd-display);font-style:italic;letter-spacing:.06em;color:var(--opd-faded)}.opd-byline{font-size:12px;color:var(--opd-faded)}.opd-register-row time{text-align:right;font:11px/1.2 var(--opd-mono);color:var(--opd-faded)}

/* Ads */
.opd-ad{background:var(--opd-cream);color:var(--opd-ink);border:1px solid var(--opd-faded);padding:18px;margin-block:28px;min-height:90px}.opd-ad:empty{display:none}.opd-ad-label{display:block;margin-bottom:8px;color:var(--opd-faded)}

/* Article */
.opd-article-hero{padding:42px 0 0}.opd-article-hero-grid{display:grid;grid-template-columns:1fr .72fr;gap:46px;align-items:center;padding-bottom:38px}.opd-article-hero h1{font:600 clamp(40px,5vw,52px)/1.04 var(--opd-display);margin:10px 0 14px}.opd-article-layout{display:grid;grid-template-columns:220px minmax(680px,900px) 220px;gap:34px;justify-content:center;padding:42px 0 70px}.opd-article{position:relative;background:var(--opd-cream);padding:6px 30px 52px 44px;min-width:0}.opd-article-contour{position:absolute;left:18px;top:0;bottom:0;width:2px;background-image:repeating-linear-gradient(180deg,rgba(39,69,107,.7) 0 2px,transparent 2px 8px)}.entry-content{font-size:19px;line-height:1.8}.entry-content p{margin:0 0 1.5em}.entry-content h2{font:600 31px/1.2 var(--opd-display);margin:2.2em 0 .65em}.entry-content h3{font:600 25px/1.25 var(--opd-display);margin:1.8em 0 .6em}.entry-content a{color:var(--opd-curve);text-decoration-thickness:1px;text-underline-offset:3px}.entry-content>p:first-of-type::first-letter{float:left;background:var(--opd-d5);color:var(--opd-cream);font:600 44px/1 var(--opd-display);padding:8px 10px;margin:8px 10px 0 0}.entry-content blockquote{width:min(var(--opd-wide),calc(100vw - 48px));margin:2.2em 50% 2.2em 50%;transform:translateX(-50%);background:var(--opd-d3);color:var(--opd-ink);padding:28px 34px;border:0;font:italic 28px/1.45 var(--opd-display)}.entry-content .alignwide{width:min(var(--opd-wide),calc(100vw - 48px));max-width:none;margin-left:50%;transform:translateX(-50%)}.entry-content .alignfull{width:100vw;max-width:none;margin-left:50%;transform:translateX(-50%)}.entry-content table{width:100%;border-collapse:collapse;background:var(--opd-cream);font-variant-numeric:tabular-nums}.entry-content th,.entry-content td{padding:12px 14px;border:1px solid var(--opd-d2)}.entry-content iframe,.entry-content embed{max-width:100%;border:1px solid var(--opd-faded);background:var(--opd-cream)}.opd-key-points{background:var(--opd-d1);padding:18px 20px;margin:22px 0 32px}.opd-key-points h2{font:700 12px/1 var(--opd-mono);letter-spacing:.09em;text-transform:uppercase;margin:0 0 8px}.opd-key-points p{margin:0}.opd-toc{position:sticky;top:130px;align-self:start;font-size:12px}.opd-toc h2{font:700 11px/1 var(--opd-mono);letter-spacing:.08em;text-transform:uppercase}.opd-toc ol{list-style:none;margin:0;padding:0}.opd-toc li{display:grid;grid-template-columns:28px 1fr 24px;gap:6px;align-items:center;margin:0 0 10px}.opd-toc-no{font-family:var(--opd-mono);color:var(--opd-faded)}.opd-toc a{text-decoration:none}.opd-toc i{height:8px;border-top:1px solid var(--opd-curve);border-radius:50%}.opd-toc li:target i,.opd-toc li:hover i{background:var(--opd-curve)}.opd-marginalia{font-size:12px}.opd-marginalia p{border-left:2px dotted var(--opd-d3);padding-left:11px;margin:0 0 18px}.opd-marginalia span,.opd-marginalia strong{display:block}.opd-marginalia span{font:10px/1.2 var(--opd-mono);text-transform:uppercase;color:var(--opd-faded)}.opd-update-mark{border-color:var(--opd-hazard)!important}.opd-update-mark span{color:var(--opd-hazard)!important}.opd-author-box{display:grid;grid-template-columns:90px 1fr;gap:18px;align-items:start;padding:24px 0;border-top:1px dotted var(--opd-faded);margin-top:46px}.opd-author-avatar{border:1px solid var(--opd-ink);padding:3px;background:var(--opd-cream)}.opd-author-box h2{margin:0 0 6px;font:600 23px/1.2 var(--opd-display)}

/* Internal links */
.opd-internal-links{margin:30px 0;padding:16px 18px;background:var(--opd-d1);border-left:2px solid var(--opd-curve)}.opd-internal-links__label{font:700 11px/1 var(--opd-mono);letter-spacing:.08em;text-transform:uppercase}.opd-internal-links__list{margin:12px 0 0;padding-left:32px}.opd-internal-links__list li{margin:7px 0}.opd-internal-links__list a{color:var(--opd-curve);text-underline-offset:3px}

/* Related */
.opd-related{margin-top:54px}.opd-related>h2{font:italic 600 30px/1.2 var(--opd-display);letter-spacing:.04em}.opd-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.opd-related .opd-feature-card{padding:16px}.opd-related .opd-feature-card h3{font-size:20px}

/* Archives/pages */
.opd-archive-hero{padding:48px 0 0}.opd-archive-hero>.opd-container{padding-bottom:36px}.opd-archive-hero h1{font:italic 600 clamp(38px,5vw,52px)/1.05 var(--opd-display);letter-spacing:.05em;margin:8px 0}.opd-page{max-width:900px;padding:48px 0 70px}.opd-page h1{font:600 46px/1.05 var(--opd-display)}.opd-404{padding:100px 0 120px}.opd-404 h1{font:600 clamp(42px,6vw,68px)/1 var(--opd-display);margin:8px 0 20px}.opd-404 .menu{list-style:none;display:flex;gap:16px;flex-wrap:wrap;padding:0}.opd-404 .menu a{color:var(--opd-curve)}.opd-volume-nav{width:min(calc(100% - 48px),var(--opd-container));margin:0 auto 60px;display:flex;justify-content:space-between;gap:20px}.opd-volume-nav a{display:inline-block;border-top:1px dotted var(--opd-curve);padding:10px 0;color:var(--opd-curve);font:700 12px/1.2 var(--opd-mono);letter-spacing:.08em;text-transform:uppercase}

/* Footer */
.opd-site-footer{padding:0 0 24px}.opd-footer-grid{display:grid;grid-template-columns:.85fr 1.65fr .65fr;gap:42px;padding:46px 0 36px}.opd-footer-brand .opd-logo-image{max-width:250px;max-height:64px}.opd-footer-brand p{max-width:350px;font-size:13px;color:var(--opd-cream)}.opd-footer-nav ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 18px;list-style:none;margin:0;padding:0}.opd-footer-nav li{border-bottom:1px dotted rgba(246,241,226,.35)}.opd-footer-nav a{display:flex;justify-content:space-between;gap:8px;padding:8px 0;color:var(--opd-cream);text-decoration:none;font:italic 500 13px/1.2 var(--opd-display);letter-spacing:.04em}.opd-footer-nav small{font:10px/1 var(--opd-mono);font-style:normal;letter-spacing:0;color:var(--opd-cream)}.opd-footer-policies h2{font:700 11px/1 var(--opd-mono);text-transform:uppercase;letter-spacing:.08em}.opd-footer-policies a{display:block;color:var(--opd-cream);font-size:12px;margin:0 0 8px}.opd-colophon{display:flex;justify-content:space-between;padding-top:18px;border-top:1px dotted rgba(246,241,226,.45);font:10px/1.2 var(--opd-mono);letter-spacing:.07em;text-transform:uppercase}

/* Focus */
.opd-depth-4 a:focus-visible,.opd-depth-5 a:focus-visible,.opd-site-header a:focus-visible,.opd-site-footer a:focus-visible,.opd-depth-4 button:focus-visible,.opd-depth-5 button:focus-visible{outline:3px solid var(--opd-cream);outline-offset:2px}.opd-article a:focus-visible,.opd-depth-1 a:focus-visible,.opd-depth-2 a:focus-visible,.opd-depth-3 a:focus-visible,.opd-page a:focus-visible{outline:3px solid var(--opd-curve);outline-offset:2px}

/* Dark / night chart */
html[data-theme="dark"]{color-scheme:dark;--opd-shore:#182022;--opd-cream:#12181A;--opd-d1:#1C2A2C;--opd-d2:#263A3D;--opd-d3:#315157;--opd-d4:#386872;--opd-d5:#3E7A84;--opd-ink:#F6F1E2;--opd-faded:#B9C6C1;--opd-curve:#8FB3D2}html[data-theme="dark"] body{background:var(--opd-cream);color:var(--opd-ink)}html[data-theme="dark"] .opd-depth-1,html[data-theme="dark"] .opd-depth-2,html[data-theme="dark"] .opd-depth-3{color:var(--opd-ink)}html[data-theme="dark"] .opd-depth-4,html[data-theme="dark"] .opd-depth-5{color:#12181A}html[data-theme="dark"] .opd-depth-4 .opd-dek,html[data-theme="dark"] .opd-depth-5 .opd-dek,html[data-theme="dark"] .opd-depth-4 .opd-meta,html[data-theme="dark"] .opd-depth-5 .opd-meta{color:#12181A}html[data-theme="dark"] .opd-site-header,html[data-theme="dark"] .opd-site-footer{color:#12181A}html[data-theme="dark"] .opd-site-header a,html[data-theme="dark"] .opd-site-footer a,html[data-theme="dark"] .opd-site-header button{color:#12181A;border-color:#12181A}

@media(max-width:1199px){.opd-article-layout{grid-template-columns:minmax(0,900px);width:min(calc(100% - 44px),900px)}.opd-toc,.opd-marginalia{display:none}.opd-article{padding-left:44px}.opd-header-inner{grid-template-columns:auto 1fr auto}.opd-nav ul{gap:18px}.opd-footer-grid{grid-template-columns:1fr 2fr}.opd-footer-policies{grid-column:1/-1;columns:3}.opd-shoal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
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