/*
Theme Name: SI Database
Theme URI: https://sidatabase.com/
Author: SI Database
Description: Independent editorial publication and interactive learning labs for intelligent data systems.
Version: 1.8.0
Requires at least: 6.2
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: si-database
Tags: blog, custom-logo, featured-images, accessibility-ready
*/

    :root { --ink:#10243d; --sub:#425269; --muted:#67788f; --blue:#2563eb; --bluehover:#154bce; --cyan:#1db7e8; --pale:#f4f8fc; --line:#dfe7f1; --white:#fff; --dark:#0d233e; --radius:13px; --max:1216px; }
    *,*::before,*::after {box-sizing:border-box}
    html {scroll-behavior:smooth; scroll-padding-top:105px}
    body {margin:0; background:#fff; color:var(--ink); font-family:Inter,Manrope,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; font-size:16px; line-height:1.65; -webkit-font-smoothing:antialiased}
    a {color:inherit;text-decoration:none} a:hover {color:var(--blue)}
    button,input {font:inherit}
    button {cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible {outline:3px solid #10a9df;outline-offset:3px}
    .skip {position:absolute;left:12px;top:-70px;background:#fff;border:2px solid var(--blue);padding:9px 16px;z-index:50}
    .skip:focus {top:10px}
    .container {width:min(var(--max),calc(100% - 72px));margin-inline:auto}
    .site-header {background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40;backdrop-filter:blur(12px)}
    .header-inner {min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand {display:flex;align-items:center;gap:10px;flex-shrink:0}
    .brand img {width:32px;height:32px;object-fit:contain}
    .brand-text {font-size:24px;letter-spacing:-.065em;line-height:1;white-space:nowrap}
    .brand-text b {font-weight:790} .brand-text span {font-weight:430}
    .nav-links {display:flex;align-items:center;gap:28px;font-weight:600;font-size:13px}
    .nav-links a {padding-block:8px} .nav-links .nav-pill {border:1px solid #c7d8ee;color:var(--blue);padding:9px 14px;border-radius:7px}
    .menu-toggle {display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 10px;color:var(--ink)}
    .eyebrow {text-transform:uppercase;letter-spacing:.17em;color:var(--blue);font-weight:750;font-size:11px;line-height:1.5}
    h1,h2,h3,p {margin-top:0} h1,h2,h3 {font-family:Manrope,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.17;letter-spacing:-.055em}
    h1 {font-size:clamp(44px,5.7vw,77px);font-weight:750;max-width:940px;margin:17px 0 25px}
    h2 {font-size:clamp(30px,3.5vw,47px);font-weight:750;margin:15px 0 17px}
    h3 {font-size:21px;font-weight:735;letter-spacing:-.035em}
    .lede {font-size:clamp(17px,1.5vw,20px);max-width:680px;line-height:1.65;color:var(--sub)}
    .hero {background:linear-gradient(130deg,#fff 43%,#f1f7fd);border-bottom:1px solid var(--line)}
    .hero-inner {padding:90px 0 76px;position:relative}
    .hero h1 {max-width:100%}
    .hero .lede {max-width:1080px}
    .hero p.lede {margin-bottom:28px}
    .hero-actions {display:flex;gap:12px;flex-wrap:wrap}
    .btn {display:inline-flex;align-items:center;justify-content:center;gap:11px;border-radius:7px;font-size:14px;font-weight:700;padding:12px 20px;border:1px solid transparent;min-height:45px;transition:background-color .16s,color .16s}
    .btn.primary {background:var(--blue);color:white}.btn.primary:hover {background:var(--bluehover);color:white}
    .btn.secondary {border-color:#bed0e5;background:white;color:var(--ink)} .btn.secondary:hover {background:var(--pale)}
    .hero-meta {display:flex;align-items:center;gap:10px;margin-top:31px;color:var(--muted);font-size:12px}
    .hero-meta .dot {width:8px;height:8px;border-radius:50%;background:var(--cyan)}
    .section {padding:88px 0}
    .section-heading {max-width:800px;margin-bottom:37px} .section-intro {font-size:17px;color:var(--sub);max-width:740px}
    .three {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .study-card {border:1px solid var(--line);border-radius:var(--radius);min-height:257px;padding:26px;display:flex;flex-direction:column;align-items:flex-start;background:white;transition:border-color .2s,transform .2s}
    .study-card:hover {border-color:#8fb9ee;transform:translateY(-3px)}
    .card-num {color:var(--blue);font-size:12px;font-weight:700;letter-spacing:.11em;margin-bottom:35px}
    .study-card h3 {margin-bottom:12px}.study-card p {color:var(--sub);font-size:14px;line-height:1.65;margin-bottom:18px}
    .text-link {color:var(--blue);font-size:13px;font-weight:750;margin-top:auto}.text-link span {margin-left:5px}
    .labs-wrap {background:var(--pale);border-block:1px solid var(--line)}
    .lab-card {background:white;border:1px solid #d6e2ef;border-radius:14px;overflow:hidden;box-shadow:0 16px 48px rgba(13,35,62,.04)}
    .lab-header {display:flex;align-items:center;justify-content:space-between;gap:20px;padding:16px 25px;border-bottom:1px solid var(--line)}
    .lab-header strong {font-size:13px}.lab-header small {font-size:11px;color:var(--muted)}
    .lab-tabs {display:flex;gap:3px;flex-wrap:wrap}
    .tab {border:1px solid transparent;background:transparent;color:var(--sub);border-radius:7px;padding:9px 13px;font-size:12px;font-weight:700;line-height:1.3}
    .tab[aria-selected="true"] {background:#e8f0fe;color:#174bc0;border-color:#c8d9fa}
    .lab-body {display:grid;grid-template-columns:42% 58%;min-height:343px}
    .lab-controls {padding:30px;border-right:1px solid var(--line)}
    .lab-controls h3 {margin-bottom:10px}.lab-controls p {font-size:14px;color:var(--sub);margin-bottom:22px}
    .field-label {display:block;text-transform:uppercase;font-size:11px;letter-spacing:.09em;font-weight:750;color:#415773;margin-bottom:9px}
    .lab-select {width:100%;padding:13px 36px 13px 12px;border:1px solid #bdcde0;border-radius:7px;background:#fff;color:var(--ink);min-height:48px;font-size:13px}
    .lab-action {margin-top:14px}.lab-note {margin-top:20px;color:var(--muted);font-size:11px;line-height:1.6}
    .lab-result {background:var(--dark);padding:28px 30px;color:white;min-width:0;position:relative;display:flex;flex-direction:column}
    .terminal-title {color:#afc8e4;font-size:10px;letter-spacing:.13em;font-weight:700;margin-bottom:25px;text-transform:uppercase}
    .terminal-title:before {content:'';display:inline-block;width:7px;height:7px;background:var(--cyan);border-radius:50%;margin-right:8px}
    .result-pre {font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;font-size:13px;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere;margin:0;color:#e5f3ff}
    .result-foot {margin-top:auto;padding-top:29px;border-top:1px solid rgba(255,255,255,.13);color:#c4d4e7;font-size:11px}
    .lab-foot {padding:12px 24px;color:var(--sub);font-size:11px;border-top:1px solid var(--line);background:#fff}
    .directory-intro {display:flex;justify-content:space-between;align-items:end;gap:28px;flex-wrap:wrap}
    .dir-controls {display:flex;gap:10px;flex-wrap:wrap;margin:15px 0 26px}
    .filter-btn {padding:8px 14px;background:white;border:1px solid #cbd9ea;border-radius:100px;color:var(--sub);font-weight:700;font-size:12px}
    .filter-btn[aria-pressed="true"] {background:var(--dark);border-color:var(--dark);color:white}
    .dir-search {margin-left:auto;min-width:190px;padding:9px 12px;border:1px solid #cbd9ea;border-radius:7px;font-size:13px}
    .directory-grid {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .vendor {padding:25px;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;min-height:241px;background:#fff}
    .vendor-top {display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
    .vendor-glyph {width:40px;height:40px;border:1px solid #cad9e9;background:#f0f5fb;display:grid;place-items:center;border-radius:8px;color:var(--blue);font-weight:800;font-size:14px}
    .vendor-tag {color:#607189;background:#f0f4f9;padding:4px 8px;font-size:10px;font-weight:750;border-radius:4px}
    .vendor h3 {font-size:19px;margin:0 0 9px}.vendor p {font-size:13px;color:var(--sub);line-height:1.6;margin-bottom:15px}.vendor a {margin-top:auto;font-size:12px;color:var(--blue);font-weight:750}
    .vendor[hidden] {display:none} #no-results {color:var(--sub);padding:30px;border:1px dashed #cbd9ea;border-radius:8px}
    .editorial {background:var(--dark);color:#fff}
    .editorial .eyebrow {color:#67d0f0}.editorial h2 {max-width:740px}.editorial p {max-width:690px;color:#cbd9e7;font-size:16px;line-height:1.78}
    .editorial-grid {display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:25px;margin-top:43px;border-top:1px solid #3a5069;padding-top:26px}
    .editorial-item {border-left:2px solid #328cdd;padding-left:16px}
    .editorial-item strong {display:block;font-size:14px;margin-bottom:7px}.editorial-item span {font-size:12px;line-height:1.6;color:#cbd9e7}
    .journal-grid {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
    .article {padding-top:15px;border-top:2px solid var(--ink)}
    .article-tag {font-size:11px;text-transform:uppercase;letter-spacing:.13em;font-weight:750;color:var(--blue);margin-bottom:12px}
    .article h3 {margin:0 0 14px}.article p {font-size:13px;color:var(--sub)}
    .article .planned {font-size:11px;color:var(--muted)}
    .site-footer {border-top:1px solid var(--line);background:#f8fafc;padding:48px 0 34px}
    .foot-grid {display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:35px}
    .foot-grid p {font-size:12px;color:var(--sub);max-width:340px}.foot-grid h4 {font-size:11px;text-transform:uppercase;letter-spacing:.12em;margin:4px 0 14px}
    .foot-links {display:flex;flex-direction:column;gap:7px;font-size:12px;color:var(--sub)}
    .foot-bottom {margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:11px}
    @media(max-width:920px) {.nav-links {gap:13px}.three,.directory-grid,.journal-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-body{grid-template-columns:1fr}.lab-controls{border-right:0;border-bottom:1px solid var(--line)}.lab-result{min-height:270px}.editorial-grid{grid-template-columns:1fr 1fr}.foot-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:650px) {html{scroll-padding-top:75px}.container{width:min(100% - 34px,var(--max))}.header-inner{min-height:68px}.brand-text{font-size:22px}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:white;box-shadow:0 14px 22px rgba(0,0,0,.08);border-bottom:1px solid var(--line);padding:18px;flex-direction:column;align-items:stretch;gap:5px}.nav-links.is-open{display:flex}.nav-links a{padding:10px}.hero-inner{padding:65px 0 62px}.hero-meta{margin-top:28px}.section{padding:65px 0}.three,.directory-grid,.journal-grid,.editorial-grid,.foot-grid{grid-template-columns:1fr}.study-card{min-height:225px}.card-num{margin-bottom:27px}.lab-header{padding:14px 16px;align-items:flex-start;flex-direction:column}.lab-controls,.lab-result{padding:24px 18px}.dir-search{width:100%;margin-left:0}.editorial-grid{gap:20px}.foot-grid{gap:26px}}
    @media(prefers-reduced-motion:reduce) {html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
  

/* WordPress templates and progressive enhancements */
.screen-reader-text,.sr-only {position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.screen-reader-text:focus {position:fixed!important;top:12px;left:12px;width:auto!important;height:auto!important;clip:auto!important;background:white!important;padding:12px!important;z-index:100}
.site-header .custom-logo {width:32px;height:32px;object-fit:contain}
.site-header .brand:focus-visible,.site-footer .brand:focus-visible {outline:3px solid var(--blue);outline-offset:3px}
.inner-page {padding:80px 0 115px;min-height:55vh}
.inner-page .content-width {max-width:790px}
.page-title {font-size:clamp(34px,4.3vw,58px);margin:12px 0 30px}
.entry-content {color:var(--sub);font-size:17px;line-height:1.8;overflow-wrap:anywhere}
.entry-content :is(h2,h3,h4) {color:var(--ink);margin-top:2em}
.entry-content p {margin:0 0 1.4em}
.entry-content a,.entry-meta a {color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.entry-content img {max-width:100%;height:auto}
.entry-content :is(pre,table) {max-width:100%;overflow-x:auto;display:block}
.entry-content blockquote {border-left:3px solid var(--blue);margin:2em 0;padding-left:22px}
.entry-meta {color:var(--muted);font-size:13px;margin-bottom:26px}
.post-cards {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post-card {padding:23px;border:1px solid var(--line);border-radius:var(--radius)}
.post-card h2 {font-size:23px;margin:12px 0}
.post-card h2 a:hover,.post-card h2 a:focus {color:var(--blue)}
.post-card p {color:var(--sub);font-size:14px}
.pagination-wrap {margin-top:36px}
.pagination-wrap .page-numbers {display:inline-block;padding:6px 12px;border:1px solid var(--line);border-radius:6px;margin:0 4px 4px 0}
.pagination-wrap .current {background:var(--blue);color:white}
.platform-profile {background:var(--pale);border:1px solid var(--line);padding:25px;margin:25px 0;border-radius:10px}
.platform-profile p {font-size:14px;margin:10px 0}
.wp-block-image img {height:auto;max-width:100%}
.alignwide {max-width:1100px;margin-inline:auto}.alignfull {width:100%}
@media(max-width:920px){.post-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.inner-page{padding:50px 0 75px}.post-cards{grid-template-columns:1fr}}
/* Sticky WordPress admin toolbar offset */
body.admin-bar .site-header {top:32px}
@media(max-width:782px){body.admin-bar .site-header{top:46px}}
/* Classic-theme accessibility and safe overflow */
pre,code {max-width:100%} img {max-width:100%}
button[disabled] {cursor:not-allowed;opacity:.6}

/* v1.2 - dedicated platform-directory route; preserve approved composition */
.directory-more {margin:16px 0 0}

/* v1.3: standalone Journal and legal-page typography */
.entry-content ul,.entry-content ol{padding-left:1.4em;margin-bottom:1.5em}
.entry-content li{margin:0 0 .55em}
.entry-content :is(code){background:#f1f6fb;border-radius:3px;padding:.1em .25em}


/* v1.4 — Journal search and article table of contents. Other site templates unchanged. */
.journal-layout {display:grid;grid-template-columns:minmax(0, 1fr) 272px;gap:clamp(30px,4.2vw,60px);align-items:start;max-width:1135px}
.journal-layout > * {min-width:0}
.journal-main {min-width:0}
.journal-main .page-title {max-width:100%;overflow-wrap:break-word}
.journal-main .entry-content {max-width:750px}
.journal-sidebar {position:sticky;top:111px;align-self:start;display:flex;flex-direction:column;gap:26px;padding-top:5px}
.journal-sidebar-block {border-top:1px solid var(--line);padding-top:18px}
.journal-sidebar h2 {font-family:Manrope,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;letter-spacing:-.015em;line-height:1.35;margin:0 0 14px;color:var(--ink)}
.journal-sidebar .journal-sidebar-kicker {text-transform:uppercase;letter-spacing:.12em;font-size:10px;font-weight:760;color:var(--blue);margin-bottom:6px}
.journal-sidebar p {font-size:13px;color:var(--muted);margin:0 0 12px}
.journal-search-form {display:flex;gap:8px}
.journal-search-form input[type="search"] {width:100%;min-width:0;border:1px solid #c4d4e5;background:#fff;border-radius:7px;padding:10px 11px;color:var(--ink);font-size:13px}
.journal-search-form button {flex:0 0 auto;border:0;border-radius:7px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:9px 11px}
.journal-search-form button:hover {background:var(--bluehover)}
.journal-sidebar-nav {list-style:none;margin:0;padding:0;border-left:1px solid var(--line)}
.journal-sidebar-nav li {margin:0}
.journal-sidebar-nav a {display:block;color:var(--sub);font-size:13px;line-height:1.52;padding:7px 0 7px 13px;border-left:2px solid transparent;margin-left:-1px;overflow-wrap:anywhere}
.journal-sidebar-nav a:hover,.journal-sidebar-nav a:focus-visible,.journal-sidebar-nav a[aria-current="location"] {color:var(--blue);border-left-color:var(--blue)}
.journal-sidebar-nav .toc-depth-3 a {padding-left:25px;font-size:12px}
.journal-sidebar .topic-list {list-style:none;margin:0;padding:0;display:grid;gap:8px}
.journal-sidebar .topic-list a {font-size:13px;color:var(--sub);text-decoration:none}
.journal-sidebar .topic-list a:hover {color:var(--blue);text-decoration:underline}
.journal-sidebar .topic-list .topic-count {color:var(--muted);font-size:12px;padding-left:5px}
.entry-content :is(h2,h3)[id] {scroll-margin-top:122px}
.journal-result-note {color:var(--sub);font-size:15px;margin-bottom:29px}
@media (max-width:880px) {
  .journal-layout {grid-template-columns:minmax(0,1fr);gap:34px}
  .journal-sidebar {position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;padding-top:0}
}
@media (max-width:620px) {
  .journal-sidebar {grid-template-columns:minmax(0,1fr)}
  .journal-sidebar-block {padding-top:16px}
  .journal-search-form button {min-height:43px}
}

.journal-layout .post-cards {grid-template-columns:repeat(2,minmax(0,1fr))}
.journal-sidebar .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}
@media (max-width:650px){.journal-layout .post-cards {grid-template-columns:1fr}}

/* Compact article contents for narrow screens, before the body rather than below it. */
.journal-mobile-toc {display:none}
@media(max-width:880px){
  .journal-sidebar .journal-toc {display:none}
  .journal-mobile-toc {display:block;border:1px solid var(--line);border-radius:9px;margin:0 0 24px;background:#f8fbff;padding:12px 17px}
  .journal-mobile-toc summary {cursor:pointer;font-size:14px;color:var(--ink);font-weight:750}
  .journal-mobile-toc ol {margin:13px 0 0;padding:0 0 0 18px}
  .journal-mobile-toc li {margin:0 0 8px;font-size:13px;line-height:1.5}
  .journal-mobile-toc a {color:var(--blue)}
  .journal-mobile-toc a:hover {text-decoration:underline}
  .journal-mobile-toc summary:focus-visible {outline:3px solid #10a9df;outline-offset:3px}
}

/* v1.5 — Full-width site header, Contact page, and policy page details.
   Only the header container widens; section/page grids retain approved measures. */
.site-header .header-inner {width:calc(100% - 80px);max-width:none}
.site-header .nav-links {flex-wrap:nowrap}
.sidb-contact-panel {border:1px solid #dbe5f1;background:#f4f8fc;border-radius:12px;padding:clamp(22px,3vw,34px);margin:28px 0 30px}
.sidb-contact-panel h2 {margin:0 0 10px;font-size:clamp(23px,2.25vw,30px)}
.sidb-contact-panel p {margin:0 0 16px}
.sidb-contact-panel .btn {color:#fff;text-decoration:none}
.sidb-contact-panel .sidb-contact-address {font-weight:720;color:var(--ink);font-size:17px;overflow-wrap:anywhere}
.sidb-contact-panel .sidb-contact-secondary {font-size:13px;color:var(--sub);margin-top:15px;margin-bottom:0}
.sidb-legal-review {background:#fff8e5;border-left:4px solid #a46a07;padding:18px 20px;margin:25px 0;color:#513b11}
@media (max-width:1050px) {.site-header .header-inner{width:calc(100% - 46px)}.site-header .nav-links{gap:15px}}
@media (max-width:650px) {.site-header .header-inner{width:calc(100% - 34px)}.sidb-contact-panel{padding:22px}}

/* v1.6 — Contact form and publishing identity; all other site layouts unchanged. */
.sidb-contact-form {display:grid;gap:18px;margin-top:24px}
.sidb-contact-form label {display:block;color:var(--ink);font-size:14px;line-height:1.5;font-weight:700;margin-bottom:7px}
.sidb-contact-form :is(input:not([type=hidden]),select,textarea){width:100%;min-width:0;min-height:46px;border:1px solid #bdcde0;border-radius:7px;background:#fff;color:var(--ink);padding:11px 13px;font:inherit;font-size:15px;line-height:1.6}
.sidb-contact-form textarea {resize:vertical;min-height:155px}
.sidb-contact-form :is(input,select,textarea):focus-visible {outline:3px solid #10a9df;outline-offset:2px}
.sidb-contact-pair {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}
.sidb-contact-form .btn {justify-self:start;border:0}
.sidb-contact-form .sidb-contact-disclosure {max-width:65ch;font-size:13px;color:var(--sub);line-height:1.65;margin:0}
.sidb-contact-form .sidb-contact-disclosure a {text-decoration:underline;color:var(--blue)}
.sidb-contact-trap {position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.sidb-contact-feedback {border-radius:7px;padding:12px 15px;font-size:14px;font-weight:600}
.sidb-contact-feedback.is-success {background:#eaf8f2;border:1px solid #93d8b9;color:#165d43}
.sidb-contact-feedback.is-error {background:#fff1f0;border:1px solid #e4b5b1;color:#81241f}
@media(max-width:620px){.sidb-contact-pair{grid-template-columns:1fr}.sidb-contact-form .btn{width:100%}}

/* v1.8 — Dynamic WordPress author credits on Journal posts and listings. */
.sidb-post-meta {display:flex;align-items:baseline;flex-wrap:wrap;column-gap:9px;row-gap:3px}
.sidb-post-byline {color:var(--ink);font-weight:650}
.sidb-meta-separator {color:var(--muted)}
.article-tag .sidb-card-byline {color:var(--muted);text-transform:none;letter-spacing:normal;font-size:12px;font-weight:500}
.article .sidb-home-byline {color:var(--muted);font-size:12px;line-height:1.5;margin:-6px 0 12px}