/*
Theme Name: TechChronicle Etched Glass
Theme URI: https://techchronicle.net/
Author: TechChronicle
Description: Premium classic WordPress news/business theme inspired by architectural sandblasted glass panels.
Version: 1.0.3
Requires at least: 6.5
Tested up to: 7.1
Requires PHP: 7.4
Text Domain: techchronicle
*/

/* ============================================================
   STEP 0A — DESIGN TOKENS
   ============================================================ */
:root{
  --tc-clear:#EDF1F0;
  --tc-frost-light:#E2E8E6;
  --tc-frost-mid:#D2DBD9;
  --tc-frost-deep:#BCC7C5;
  --tc-glass-edge:#7E9B96;
  --tc-panel-slate:#263230;
  --tc-bevel-light:#FBFDFC;
  --tc-bevel-dark:#9BAEAA;
  --tc-etch:#A8B8B4;
  --tc-text:#131A19;
  --tc-text-pale:#EEF3F2;
  --tc-faded:#64726F;
  --tc-brass:#9C7C46;
  --tc-frost-dot-a:rgba(19,26,25,.040);
  --tc-frost-dot-b:rgba(251,253,252,.038);
  --tc-frost-opacity:.04;
  --tc-bevel:12px;
  --tc-bevel-mobile:6px;
  --tc-etch-width:1px;
  --tc-edge-thickness:3px;
  --tc-radius:0px;
  --tc-container:1440px;
  --tc-reading:900px;
  --tc-wide:1140px;
  --tc-header-h:84px;
  --tc-header-compact:58px;
  --tc-transition:200ms ease;
}

/* ============================================================
   STEP 0B — THREE KEY TECHNIQUES
   ============================================================ */
/* 1) FROSTED FIELD vs CLEAR FIELD — opaque only, no blur/backdrop */
.tc-clear-field{background:var(--tc-clear);color:var(--tc-text);}
.tc-frosted-field{position:relative;background-color:var(--tc-frost-light);color:var(--tc-text);}
.tc-frosted-field::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:1;
  background-image:
    repeating-radial-gradient(circle at 1px 1px,var(--tc-frost-dot-a) 0 1px,transparent 1px 3px),
    repeating-radial-gradient(circle at 2px 2px,var(--tc-frost-dot-b) 0 1px,transparent 1px 5px);
}
.tc-frost-light{background-color:var(--tc-frost-light)}
.tc-frost-mid{background-color:var(--tc-frost-mid)}
.tc-frost-deep{background-color:var(--tc-frost-deep)}
.tc-clear-window{position:relative;background:var(--tc-clear);border:1px solid var(--tc-etch);box-shadow:0 0 0 2px rgba(168,184,180,.22);z-index:1;}

/* 2) BEVEL EDGE — border-only chamfer + glass thickness */
.tc-bevel{
  border-style:solid;border-width:var(--tc-bevel);
  border-top-color:var(--tc-bevel-light);border-left-color:var(--tc-bevel-light);
  border-right-color:var(--tc-bevel-dark);border-bottom-color:var(--tc-bevel-dark);
  box-shadow:inset 0 calc(-1 * var(--tc-edge-thickness)) 0 var(--tc-glass-edge);
}

/* 3) ETCHED LINE — sandblasted line + bilateral halo */
.tc-etch-line{height:var(--tc-etch-width);background:var(--tc-etch);box-shadow:0 0 0 2px rgba(168,184,180,.22);}

*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--tc-clear);color:var(--tc-text);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.6}img{max-width:100%;height:auto;display:block}a{color:inherit}button,input{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}.tc-wrap{width:min(calc(100% - 40px),var(--tc-container));margin-inline:auto}.tc-reading{width:min(calc(100% - 40px),var(--tc-reading));margin-inline:auto}.tc-wide{width:min(calc(100% - 40px),var(--tc-wide));margin-inline:auto}.tc-section{padding:48px 0}.tc-kicker,.tc-meta,.tc-trust,.tc-chip{font-size:11px;letter-spacing:.14em;text-transform:uppercase}.tc-meta{color:var(--tc-faded);display:flex;gap:10px;flex-wrap:wrap}.tc-panel-dark .tc-meta{color:var(--tc-text-pale)}
.tc-frost-mid .tc-meta,.tc-frost-deep .tc-meta{color:var(--tc-text)}

h1,h2,h3,h4{font-family:"Trebuchet MS",Arial,sans-serif;letter-spacing:.03em;line-height:1.08;margin:0 0 18px;font-weight:600}.tc-etched-heading{text-shadow:0 1px 0 rgba(251,253,252,.7),0 -1px 0 rgba(155,174,170,.35)}

/* Header */
.tc-site-header{position:sticky;top:0;z-index:999;background:var(--tc-panel-slate);color:var(--tc-text-pale);transition:height var(--tc-transition)}
.tc-header-glass{min-height:var(--tc-header-h);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;padding:10px 22px;background:var(--tc-frost-mid);color:var(--tc-text);border:8px solid transparent;border-top-color:var(--tc-bevel-light);border-left-color:var(--tc-bevel-light);border-right-color:var(--tc-bevel-dark);border-bottom-color:var(--tc-bevel-dark);box-shadow:inset 0 -3px 0 var(--tc-glass-edge)}
.tc-brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}.tc-brand img{width:auto;max-width:230px;max-height:52px;object-fit:contain}.tc-brand-fallback{font-weight:700;font-size:22px;letter-spacing:.04em}.tc-brand-mark{width:48px;height:40px;background:var(--tc-frost-light);border:1px solid var(--tc-glass-edge);display:grid;place-items:center;font-weight:700;position:relative}.tc-brand-mark:after{content:"";position:absolute;inset:5px;border:1px solid var(--tc-etch)}
.tc-nav ul{list-style:none;display:flex;gap:26px;margin:0;padding:0}.tc-nav a{text-decoration:none;font-size:12px;letter-spacing:.12em;text-transform:uppercase;position:relative}.tc-nav a:hover:after,.tc-nav .current-menu-item>a:after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:1px;background:var(--tc-etch);box-shadow:0 0 0 2px rgba(168,184,180,.22)}
.tc-header-actions{display:flex;justify-content:flex-end;gap:10px}.tc-btn{border:1px solid var(--tc-glass-edge);background:transparent;color:inherit;padding:9px 14px;cursor:pointer;text-transform:uppercase;letter-spacing:.12em;font-size:11px}.tc-btn:hover{background:var(--tc-frost-light)}.tc-trust{padding:7px 22px;background:var(--tc-panel-slate);color:var(--tc-text-pale);display:flex;gap:18px;justify-content:center}
.tc-fitting{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--tc-brass);border:1px solid rgba(19,26,25,.4)}.tc-fitting:after{content:"";position:absolute;left:1px;right:1px;top:2px;height:1px;background:#5c4b2d;transform:rotate(30deg)}

/* Hero */
.tc-hero{padding:36px 0}.tc-hero-panel{position:relative;background:var(--tc-frost-deep);display:grid;grid-template-columns:1fr 1fr;gap:34px;padding:34px;overflow:hidden}.tc-hero-panel .tc-fitting.a{left:12px;top:12px}.tc-hero-panel .tc-fitting.b{right:12px;bottom:12px}.tc-hero-image{padding:8px}.tc-hero-image img{width:100%;aspect-ratio:16/10;object-fit:cover;filter:contrast(1.04) saturate(.97)}.tc-hero-copy{position:relative;z-index:2;align-self:center;padding:10px 18px}.tc-hero h1{font-size:clamp(42px,4vw,52px)}.tc-hero .tc-dek{font-size:18px;line-height:1.6;margin:0 0 20px}.tc-hero-motif{position:absolute;right:20px;top:18px;width:180px;height:110px;opacity:.08;background:repeating-linear-gradient(45deg,var(--tc-etch) 0 1px,transparent 1px 12px);pointer-events:none}

/* Cards */
.tc-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.tc-glass-card{position:relative;background:var(--tc-frost-light);border:1px solid var(--tc-glass-edge);padding:18px;transition:background-color var(--tc-transition)}.tc-glass-card:hover{background:var(--tc-clear)}.tc-glass-card:hover h3{text-decoration:underline;text-decoration-color:var(--tc-etch);text-underline-offset:5px}.tc-glass-card .tc-clear-window{padding:5px;margin-bottom:18px}.tc-glass-card img{aspect-ratio:16/10;object-fit:cover}.tc-glass-card h3{font-size:23px}.tc-glass-card p{margin:0 0 14px;line-height:1.55}.tc-card-link{text-decoration:none}

/* Slate feature */
.tc-slate-band{background:var(--tc-panel-slate);color:var(--tc-text-pale);padding:42px 0}.tc-slate-grid{display:grid;grid-template-columns:1.55fr .65fr;gap:28px;align-items:stretch}.tc-slate-story{padding:24px}.tc-slate-story h2{font-size:clamp(30px,3vw,40px)}.tc-slate-attached{background:var(--tc-frost-mid);color:var(--tc-text);padding:20px;border:8px solid transparent;border-top-color:var(--tc-bevel-light);border-left-color:var(--tc-bevel-light);border-right-color:var(--tc-bevel-dark);border-bottom-color:var(--tc-bevel-dark)}

/* Readout */
.tc-readout-panel{position:relative;background:var(--tc-frost-mid);padding:30px}.tc-readout-title{display:flex;align-items:center;gap:20px;margin-bottom:20px}.tc-readouts{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.tc-readout{background:var(--tc-clear);border:1px solid var(--tc-etch);padding:18px;min-height:126px}.tc-readout strong{display:block;font-family:"Trebuchet MS",Arial,sans-serif;font-size:clamp(38px,4vw,62px);line-height:1;font-variant-numeric:tabular-nums}.tc-readout span{display:block;margin-top:10px;font-size:11px;letter-spacing:.1em;text-transform:uppercase}

/* Register */
.tc-register{background:var(--tc-clear)}.tc-register-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;padding:18px 0;border-bottom:1px solid rgba(168,184,180,.7)}.tc-register-row h3{font-size:20px;margin:0}.tc-register-side{font-size:11px;text-transform:uppercase;letter-spacing:.1em;text-align:right;color:var(--tc-faded)}

/* Search overlay */
.tc-search-overlay{position:fixed;inset:0;background:rgba(38,50,48,.96);z-index:2000;display:none;padding:8vh 20px}.tc-search-overlay.is-open{display:block}.tc-search-panel{max-width:900px;margin:auto;background:var(--tc-frost-deep);padding:28px;border:10px solid transparent;border-top-color:var(--tc-bevel-light);border-left-color:var(--tc-bevel-light);border-right-color:var(--tc-bevel-dark);border-bottom-color:var(--tc-bevel-dark)}.tc-search-panel form{background:var(--tc-clear);padding:20px}.tc-search-panel input[type=search]{width:100%;border:0;border-bottom:1px solid var(--tc-etch);font-size:28px;background:transparent;color:var(--tc-text);padding:12px 0;outline:none}

/* Article */
.tc-article-hero{background:var(--tc-frost-deep);padding:30px 0}.tc-article-hero-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:center}.tc-article-hero h1{font-size:clamp(38px,4vw,50px)}.tc-article-shell{background:var(--tc-clear);padding:42px 0}.tc-article-layout{display:grid;grid-template-columns:190px minmax(680px,900px) 190px;gap:28px;justify-content:center;align-items:start}.tc-article-main{position:relative}.tc-article-main:before{content:"";position:absolute;left:-18px;top:0;width:1px;height:42%;background:var(--tc-etch);box-shadow:0 0 0 2px rgba(168,184,180,.22)}.entry-content{font-size:19px;line-height:1.8}.entry-content p{margin:0 0 1.5em}.entry-content h2{font-size:30px;margin-top:2.2em}.entry-content h3{font-size:24px;margin-top:1.8em}.entry-content a{color:var(--tc-panel-slate);text-decoration-thickness:2px;text-underline-offset:3px}.entry-content blockquote{margin:2em 0;padding:22px 28px;background:var(--tc-frost-mid);font-family:Georgia,serif;font-size:28px;font-style:italic;border-left:0}.entry-content img{margin:1.8em auto}.entry-content table{width:100%;border-collapse:collapse;background:var(--tc-clear);font-size:16px}.entry-content th,.entry-content td{border:1px solid var(--tc-etch);padding:12px;text-align:left}.entry-content iframe,.entry-content embed{max-width:100%;border:1px solid var(--tc-glass-edge);background:var(--tc-clear)}.entry-content .alignwide{width:min(1140px,calc(100vw - 40px));max-width:none;margin-left:50%;transform:translateX(-50%)}.entry-content .alignfull{width:100vw;max-width:none;margin-left:50%;transform:translateX(-50%)}
.tc-key-points{background:var(--tc-clear);border:1px solid var(--tc-glass-edge);padding:20px;margin:0 0 28px}.tc-key-points h2{font-size:18px;margin:0 0 10px}.tc-dropcap:first-letter{float:left;background:var(--tc-clear);border:8px solid var(--tc-frost-mid);font-family:Georgia,serif;font-size:54px;line-height:.8;padding:9px 12px;margin:8px 12px 0 0}.tc-toc{font-size:13px;position:sticky;top:120px}.tc-toc ol{margin:10px 0 0;padding-left:22px}.tc-toc a{text-decoration:none}.tc-toc a.is-active{background:var(--tc-clear);outline:1px solid var(--tc-etch)}.tc-marginalia{font-size:12px;color:var(--tc-faded);position:sticky;top:120px}.tc-author-box{margin-top:38px;padding:20px;border:1px solid var(--tc-glass-edge);display:grid;grid-template-columns:90px 1fr;gap:18px}.tc-author-box img{width:90px;height:90px;object-fit:cover}.tc-related{margin-top:44px}.tc-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* Internal related reading blocks */
.tc-internal-links{margin:28px 0;padding:18px 20px;border:1px solid var(--tc-glass-edge);background:var(--tc-clear)}.tc-internal-links-title{font-size:11px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}.tc-internal-link-row{display:grid;grid-template-columns:36px 1fr;gap:12px;padding:8px 0;border-top:1px solid rgba(168,184,180,.6)}.tc-internal-link-row:first-of-type{border-top:0}.tc-internal-link-row b{font-family:monospace;color:var(--tc-faded)}.entry-content .tc-internal-links .tc-internal-link-row a,.entry-content .tc-internal-links .tc-internal-link-row a:visited{color:#9C7C46!important;-webkit-text-fill-color:#9C7C46!important;font-weight:600;text-decoration-color:#9C7C46!important;text-decoration-thickness:2px;text-underline-offset:3px}.entry-content .tc-internal-links .tc-internal-link-row a:hover,.entry-content .tc-internal-links .tc-internal-link-row a:focus-visible{color:#B89A5D!important;-webkit-text-fill-color:#B89A5D!important;text-decoration-color:#B89A5D!important}

/* Ads */
.tc-ad{background:var(--tc-clear);border:1px solid var(--tc-glass-edge);padding:16px;min-height:90px;margin:22px auto}.tc-ad:empty{display:none}.tc-ad-label{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--tc-faded);display:block;margin-bottom:8px}

/* Footer */
.tc-footer{background:var(--tc-panel-slate);color:var(--tc-text-pale);margin-top:50px}.tc-footer-frost{background:var(--tc-frost-deep);color:var(--tc-text);padding:28px 0;border-top:8px solid var(--tc-bevel-light);border-bottom:8px solid var(--tc-bevel-dark)}.tc-footer-grid{display:grid;grid-template-columns:1fr 2fr 1fr;gap:34px;padding:38px 0}.tc-footer-logo img{max-width:260px;max-height:70px;width:auto;height:auto}.tc-footer h3{font-size:14px;text-transform:uppercase;letter-spacing:.14em}.tc-footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 22px}.tc-footer a{text-decoration:none}.tc-footer a:hover{text-decoration:underline}.tc-policies{display:flex;flex-direction:column;gap:8px}.tc-footer-copy{padding:16px 0;border-top:1px solid rgba(238,243,242,.18);font-size:12px}

/* Archives */
.tc-archive-hero{padding:34px 0;background:var(--tc-frost-mid)}.tc-archive-list{display:grid;gap:18px}.tc-archive-card{display:grid;grid-template-columns:240px 1fr;gap:20px;background:var(--tc-frost-light);border:1px solid var(--tc-glass-edge);padding:18px}.tc-archive-card img{aspect-ratio:16/10;object-fit:cover}.tc-older{display:inline-block;margin-top:28px;padding:14px 22px;background:var(--tc-frost-mid);border:8px solid transparent;border-top-color:var(--tc-bevel-light);border-left-color:var(--tc-bevel-light);border-right-color:var(--tc-bevel-dark);border-bottom-color:var(--tc-bevel-dark);text-decoration:none;text-transform:uppercase;letter-spacing:.12em;font-size:11px}

/* 404 */
.tc-404{min-height:60vh;display:grid;place-items:center;background:var(--tc-frost-deep)}.tc-404-panel{text-align:center;padding:50px;max-width:760px}

/* Theme toggle / dark */
html[data-theme="dark"]{--tc-clear:#161C1B;--tc-frost-light:#1D2423;--tc-frost-mid:#232B2A;--tc-frost-deep:#2B3533;--tc-panel-slate:#0D1211;--tc-text:#EEF3F2;--tc-text-pale:#EEF3F2;--tc-faded:#B2BFBC;--tc-glass-edge:#4E6B66;--tc-bevel-light:#364441;--tc-bevel-dark:#0A0F0E;--tc-etch:#57706B;--tc-brass:#B9975A;--tc-frost-dot-a:rgba(255,255,255,.025);--tc-frost-dot-b:rgba(0,0,0,.04)}
html[data-theme="dark"] .tc-bevel{border-top-color:var(--tc-bevel-dark);border-left-color:var(--tc-bevel-dark);border-right-color:var(--tc-bevel-light);border-bottom-color:var(--tc-bevel-light)}
html[data-theme="dark"] .entry-content .tc-internal-links .tc-internal-link-row a,html[data-theme="dark"] .entry-content .tc-internal-links .tc-internal-link-row a:visited{color:#D8B86A!important;-webkit-text-fill-color:#D8B86A!important;text-decoration-color:#D8B86A!important}html[data-theme="dark"] .entry-content .tc-internal-links .tc-internal-link-row a:hover,html[data-theme="dark"] .entry-content .tc-internal-links .tc-internal-link-row a:focus-visible{color:#F0D58A!important;-webkit-text-fill-color:#F0D58A!important;text-decoration-color:#F0D58A!important}

/* Focus */
.tc-clear-field :focus-visible,.tc-article-shell :focus-visible,.tc-register :focus-visible{outline:3px solid var(--tc-panel-slate);outline-offset:2px}
.tc-panel-dark :focus-visible,.tc-site-header :focus-visible,.tc-footer :focus-visible{outline:3px solid var(--tc-clear);outline-offset:2px}

@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:1200px){.tc-article-layout{grid-template-columns:minmax(0,900px);width:90%;margin:auto}.tc-toc,.tc-marginalia{display:none}.tc-reading{width:90%}}
@media(max-width:900px){.tc-header-glass{grid-template-columns:1fr auto}.tc-nav{grid-column:1/-1;overflow:auto}.tc-nav ul{justify-content:flex-start;gap:18px}.tc-trust{justify-content:flex-start;overflow:auto}.tc-hero-panel,.tc-slate-grid,.tc-article-hero-grid{grid-template-columns:1fr}.tc-grid-3,.tc-readouts,.tc-related-grid{grid-template-columns:1fr 1fr}.tc-footer-grid{grid-template-columns:1fr 1fr}.tc-footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:767px){:root{--tc-bevel:6px}.tc-wrap,.tc-reading,.tc-wide{width:min(calc(100% - 28px),var(--tc-container))}.tc-header-glass{padding:8px 12px}.tc-brand img{max-width:190px;max-height:44px}.tc-header-actions .tc-theme-toggle{display:none}.tc-trust{font-size:9px}.tc-hero{padding:20px 0}.tc-hero-panel{padding:18px;gap:18px}.tc-hero-motif{display:none}.tc-grid-3,.tc-readouts,.tc-related-grid,.tc-footer-grid{grid-template-columns:1fr}.tc-footer-grid>div:first-child{grid-column:auto}.tc-footer-nav{grid-template-columns:1fr 1fr}.tc-archive-card{grid-template-columns:1fr}.tc-fitting{display:none}.tc-hero-panel .tc-fitting,.tc-footer .tc-fitting{display:block}.tc-frosted-field::before{opacity:.75}.tc-register-row{grid-template-columns:1fr}.tc-register-side{text-align:left}.entry-content{font-size:18px}.tc-article-shell{padding-top:28px}}

/* Safety assertion: this theme intentionally contains no backdrop-filter, blur filter, translucent panel alpha, or glassmorphism. */