/* Spectral Lab: shared Cyberpath appearance, navigation and feature surfaces. */
:root,html[data-theme="dark"]{
  color-scheme:dark;
  --cp-bg:#0c0d22;--cp-surface:#14152f;--cp-surface-soft:#1d1e3d;--cp-surface-raised:#252548;
  --cp-border:#32325b;--cp-border-strong:#5a5687;--cp-text:#f4f2ff;--cp-muted:#b9b6d3;--cp-subtle:#a7a3c3;
  --cp-accent:#b59aff;--cp-accent-soft:#302451;--cp-accent-text:#1b1232;
  --cp-danger:#ffa3bd;--cp-danger-soft:#3f263b;--cp-warning:#f3cc8d;--cp-warning-soft:#3b3026;
  --cp-success:#a6e8d6;--cp-success-soft:#173a3a;--cp-info:#9ed8ff;--cp-info-soft:#21364b;--cp-shadow:#03030f;
  --terminal-bg:#0d1020;--terminal-panel:#151a30;--terminal-border:#393d62;--terminal-text:#e5e8ff;--terminal-muted:#a2adc9;--terminal-accent:#9ed8ff;
}
html[data-theme="light"]{
  color-scheme:light;
  --cp-bg:#f5f3ff;--cp-surface:#ffffff;--cp-surface-soft:#eeebf9;--cp-surface-raised:#f9f7ff;
  --cp-border:#ded8ee;--cp-border-strong:#b6abcf;--cp-text:#211c3d;--cp-muted:#5b5673;--cp-subtle:#6a637d;
  --cp-accent:#6344ad;--cp-accent-soft:#eee8fb;--cp-accent-text:#ffffff;
  --cp-danger:#ae315b;--cp-danger-soft:#fff0f5;--cp-warning:#855210;--cp-warning-soft:#fff4df;
  --cp-success:#256458;--cp-success-soft:#e8f6ef;--cp-info:#265b92;--cp-info-soft:#eaf4ff;--cp-shadow:#292044;
}
html[data-theme]{--sans:"DM Sans",Arial,sans-serif;--mono:"IBM Plex Mono",ui-monospace,monospace;scroll-padding-top:150px}
html[data-theme] body{font-size:15px;line-height:1.65}
html[data-theme] h1,html[data-theme] h2,html[data-theme] h3{font-family:var(--sans);font-weight:750;letter-spacing:-.035em}
html[data-theme] button,html[data-theme] .button,html[data-theme] input,html[data-theme] textarea,html[data-theme] select{border-radius:8px}
html[data-theme] .primary,html[data-theme] .primary:hover{font-weight:750;background:var(--cp-accent);border-color:var(--cp-accent);color:var(--cp-accent-text)}
html[data-theme] .workspace-header{background:color-mix(in srgb,var(--cp-bg) 93%,transparent);border-bottom-color:var(--cp-border);backdrop-filter:blur(22px);box-shadow:0 5px 25px color-mix(in srgb,var(--cp-shadow) 8%,transparent)}
html[data-theme] .header-main{min-height:78px;max-width:1352px;padding:15px 44px;gap:24px}
html[data-theme] .brand{gap:12px}
html[data-theme] .brand-name{font-size:24px;line-height:1;font-weight:850;letter-spacing:.025em;text-transform:uppercase}
html[data-theme] .brand-name small{font:6px/1.2 var(--mono);letter-spacing:.2em;color:var(--cp-subtle);margin-top:9px}
html[data-theme] .brand-icon{width:36px;height:38px;border-radius:0;background:transparent;color:var(--cp-accent);box-shadow:none}
html[data-theme] .brand-icon svg{width:36px;height:36px;filter:drop-shadow(0 0 10px color-mix(in srgb,var(--cp-accent) 20%,transparent))}
html[data-theme] .brand-dot{display:none}
html[data-theme] .header-actions{gap:13px}
html[data-theme] .header-main .search-trigger{width:240px;max-width:240px;font-size:11px;background:color-mix(in srgb,var(--cp-surface) 80%,transparent);border-radius:8px;min-height:40px}
html[data-theme] .header-main .search-trigger kbd{font-size:9px;border-radius:4px}
html[data-theme] .appearance-control{padding:3px;border-radius:8px;background:var(--cp-surface);gap:2px}
html[data-theme] .appearance-control button{border-radius:5px;min-height:31px;font-size:10px;padding:6px 9px}
html[data-theme] .appearance-control button[aria-pressed="true"]{background:var(--cp-accent-soft);color:var(--cp-accent);border-color:color-mix(in srgb,var(--cp-accent) 35%,transparent)}
html[data-theme] .header-main .profile-button .avatar{width:36px;height:36px;border-radius:9px;border-color:color-mix(in srgb,var(--cp-accent) 35%,transparent);font-family:var(--mono);font-size:11px}
html[data-theme] .header-main .profile-button strong{font-size:11px;font-weight:700}
html[data-theme] .header-main .profile-button small{font:9px/1.5 var(--mono)}
html[data-theme] .workspace-header .workspace-nav{max-width:1352px;gap:3px;padding:0 44px}
html[data-theme] .workspace-header .workspace-nav a{font-size:11px;font-weight:600;min-height:46px;padding:13px 14px;border:0;border-radius:7px 7px 0 0;gap:7px}
html[data-theme] .workspace-header .workspace-nav a[aria-current]{background:linear-gradient(to top,color-mix(in srgb,var(--cp-accent-soft) 60%,transparent),transparent);border-color:transparent;color:var(--cp-accent)}
html[data-theme] .workspace-header .workspace-nav a[aria-current]:after{content:"";position:absolute;bottom:-1px;left:13px;right:13px;height:3px;background:var(--cp-accent);border-radius:3px;box-shadow:0 0 12px color-mix(in srgb,var(--cp-accent) 30%,transparent)}
html[data-theme] .workspace-header .workspace-nav a:hover{background:var(--cp-surface);color:var(--cp-text)}
html[data-theme] .workspace-header .workspace-nav a .icon{width:15px;height:15px}
html[data-theme] .workspace-header .nav-count{font-size:8px;padding:2px 5px;border-radius:4px}
html[data-theme] .topbar{max-width:1352px;height:49px;padding:15px 44px 0}
html[data-theme] .breadcrumb{font-family:var(--mono);font-size:9px}
html[data-theme] .breadcrumb b{font:500 9px var(--mono)}
html[data-theme] .environment-status{font:8px var(--mono);text-transform:uppercase;letter-spacing:.04em}
html[data-theme] .online-dot{background:var(--cp-info);width:5px;height:5px;box-shadow:0 0 8px color-mix(in srgb,var(--cp-info) 40%,transparent)}
html[data-theme] main{max-width:1352px;padding:24px 44px 62px}
html[data-theme] .page-heading h1{font-weight:800;letter-spacing:-.04em}
html[data-theme] .page-heading .eyebrow,html[data-theme] .section-heading .eyebrow{font-family:var(--mono);color:var(--cp-accent);letter-spacing:.12em}
html[data-theme] .section-heading h2{font-weight:750}
html[data-theme] .lesson-card,html[data-theme] .lab-card,html[data-theme] .path-card{border-radius:10px;overflow:hidden;border-color:var(--cp-border);background:linear-gradient(145deg,color-mix(in srgb,var(--cp-accent) 3%,var(--cp-surface)),var(--cp-surface));box-shadow:0 6px 22px color-mix(in srgb,var(--cp-shadow) 5%,transparent)}
html[data-theme] .lesson-card h3,html[data-theme] .lab-card h3,html[data-theme] .path-card h3{font-weight:750}
html[data-theme] .lesson-card:hover,html[data-theme] .lab-card:hover,html[data-theme] .path-card:hover{border-color:color-mix(in srgb,var(--cp-accent) 65%,var(--cp-border));box-shadow:0 10px 32px color-mix(in srgb,var(--cp-shadow) 13%,transparent),0 0 20px color-mix(in srgb,var(--cp-accent) 5%,transparent)}
html[data-theme] .panel{border-radius:10px;border-color:var(--cp-border)}
html[data-theme] .lesson-card-top{font-family:var(--mono)}
html[data-theme] .lesson-card-footer>b,html[data-theme] .lab-card-footer b{font-weight:700}
html[data-theme] .catalog-toolbar{gap:20px}
html[data-theme] .catalog-search,html[data-theme] .filter-tabs,html[data-theme] .path-card-icon{border-radius:8px}
html[data-theme] .filter-tabs button{border-radius:5px;font-weight:600}
html[data-theme] .filter-tabs button.active{background:var(--cp-accent-soft);color:var(--cp-accent);border-color:color-mix(in srgb,var(--cp-accent) 35%,var(--cp-border))}
html[data-theme] .search-dialog{border-radius:12px;border-color:var(--cp-border-strong);box-shadow:0 30px 90px color-mix(in srgb,var(--cp-shadow) 40%,transparent)}
html[data-theme] .search-heading input{border-radius:0}
html[data-theme] .site-footer{max-width:1352px;padding:27px 44px 30px;gap:24px}
html[data-theme] .footer-identity strong{font-weight:850;font-size:20px;letter-spacing:.025em;text-transform:uppercase}
html[data-theme] .footer-identity>span{font:7px var(--mono);letter-spacing:.15em}
html[data-theme] .site-footer .footer-links a,html[data-theme] .site-footer .footer-links button{font-size:10px}
html[data-theme] .toast{border-radius:8px;border-color:var(--cp-border-strong)}
@media(min-width:1025px) and (max-width:1250px){
  html[data-theme] .header-main{padding:15px 28px;gap:18px}
  html[data-theme] .header-main .search-trigger{width:205px}
  html[data-theme] .workspace-header .workspace-nav{padding:0 28px;gap:0}
  html[data-theme] .workspace-header .workspace-nav a{font-size:10px;padding:13px 11px}
  html[data-theme] .topbar{padding-left:28px;padding-right:28px}
  html[data-theme] main{padding-left:28px;padding-right:28px}
  html[data-theme] .site-footer{padding-left:28px;padding-right:28px}
}
@media(max-width:1024px){
  html[data-theme]{scroll-padding-top:95px}
  html[data-theme] .header-main{min-height:73px;padding:15px 24px;gap:17px}
  html[data-theme] .header-main .search-trigger{width:210px;max-width:210px}
  html[data-theme] .header-main .mobile-menu{border-radius:8px}
  html[data-theme] .workspace-header .workspace-nav{padding:0;gap:5px;max-width:none}
  html[data-theme] .workspace-header .workspace-nav a{padding:14px;min-height:48px;font-size:13px;border-radius:7px;gap:13px}
  html[data-theme] .workspace-header .workspace-nav a[aria-current]{background:var(--cp-accent-soft)}
  html[data-theme] .workspace-header .workspace-nav a[aria-current]:after{top:11px;bottom:11px;left:0;right:auto;width:3px;height:auto}
  html[data-theme] .workspace-header .workspace-nav a .icon{width:19px;height:19px}
  html[data-theme] .workspace-header .sidebar-close{border-radius:8px}
  html[data-theme] .topbar{padding:12px 24px 0;height:43px}
  html[data-theme] main{padding:21px 24px 46px}
  html[data-theme] .site-footer{padding:24px}
}
@media(max-width:800px){
  html[data-theme] .header-main .search-trigger{width:40px;max-width:40px;padding:10px;justify-content:center}
  html[data-theme] .header-main .search-trigger .search-label,html[data-theme] .header-main .search-trigger kbd{display:none}
}
@media(max-width:600px){
  html[data-theme]{scroll-padding-top:88px}
  html[data-theme] .header-main{min-height:70px;padding:13px 18px;gap:8px}
  html[data-theme] .header-brand{gap:7px}
  html[data-theme] .header-brand .brand-icon{width:28px;height:31px}
  html[data-theme] .header-brand .brand-icon svg{width:28px;height:29px}
  html[data-theme] .header-brand .brand-name{font-size:20px;letter-spacing:.015em}
  html[data-theme] .header-actions{gap:5px}
  html[data-theme] .appearance-control{padding:2px;gap:0;border-radius:7px}
  html[data-theme] .appearance-control button{width:34px;height:38px;min-height:38px;padding:8px}
  html[data-theme] .header-main .mobile-menu,html[data-theme] .header-main .search-trigger{width:37px;max-width:37px;min-width:37px;height:42px;min-height:42px;border-radius:7px;padding:9px}
  html[data-theme] .topbar{padding:10px 18px 0;height:38px}
  html[data-theme] main{padding:19px 18px 36px}
  html[data-theme] .site-footer{display:grid;gap:19px;padding:24px 18px}
  html[data-theme] .site-footer .footer-links{gap:13px 18px}
}
@media(max-width:374px){
  html[data-theme] .header-main{padding:12px 12px;gap:5px}
  html[data-theme] .header-brand{gap:5px}
  html[data-theme] .header-brand .brand-name{font-size:18px;letter-spacing:0}
  html[data-theme] .header-brand .brand-icon{width:25px;height:29px}
  html[data-theme] .header-brand .brand-icon svg{width:25px;height:27px}
  html[data-theme] .header-actions{gap:3px}
  html[data-theme] .appearance-control button{width:30px}
  html[data-theme] .header-main .mobile-menu,html[data-theme] .header-main .search-trigger{width:33px;max-width:33px;min-width:33px;padding:8px}
}

/* The selected reference uses one calm header row above the glass learning stage. */
html[data-theme]{scroll-padding-top:108px}
html[data-theme] .workspace-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;column-gap:36px;width:100%;min-height:88px;padding:0 max(40px,calc((100% - 1360px)/2));background:color-mix(in srgb,var(--cp-bg) 95%,transparent);border-bottom:1px solid var(--cp-border);box-shadow:inset 0 1px 0 color-mix(in srgb,var(--cp-accent) 9%,transparent);backdrop-filter:blur(24px)}
html[data-theme] .workspace-header .header-main{display:contents}
html[data-theme] .header-brand{grid-column:1;grid-row:1;gap:15px;padding-right:32px;border-right:1px solid color-mix(in srgb,var(--cp-accent) 45%,var(--cp-border));height:38px}
html[data-theme] .header-brand .brand-icon,html[data-theme] .header-brand .brand-icon svg{width:40px;height:42px}
html[data-theme] .header-brand .brand-name{font-size:25px;font-weight:850;letter-spacing:.015em;line-height:1.05}
html[data-theme] .header-brand .brand-name small{display:none}
html[data-theme] .workspace-header .header-actions{grid-column:3;grid-row:1;gap:11px;justify-content:flex-end}
html[data-theme] .workspace-header .sidebar{grid-column:2;grid-row:1;width:auto}
html[data-theme] .workspace-header .workspace-nav{max-width:none;width:auto;gap:26px;padding:0;justify-content:flex-start}
html[data-theme] .workspace-header .workspace-nav a{font-size:15px;font-weight:550;line-height:1.4;padding:31px 0 30px;min-height:88px;border-radius:0;gap:0;background:transparent;color:var(--cp-text)}
html[data-theme] .workspace-header .workspace-nav a[href="#overview"],html[data-theme] .workspace-header .workspace-nav a[href="#toolkit"],html[data-theme] .workspace-header .workspace-nav a[href="#progress"]{display:none}
html[data-theme] .workspace-header .workspace-nav a .icon,html[data-theme] .workspace-header .nav-count{display:none}
html[data-theme] .workspace-header .workspace-nav a:hover{color:var(--cp-accent);background:transparent}
html[data-theme] .workspace-header .workspace-nav a[aria-current]{color:var(--cp-text);background:transparent}
html[data-theme] .workspace-header .workspace-nav a[aria-current]:after{left:0;right:0;bottom:19px;height:3px;border-radius:3px;background:var(--cp-accent);box-shadow:0 0 15px color-mix(in srgb,var(--cp-accent) 22%,transparent)}
html[data-theme] .header-main .search-trigger{width:34px;max-width:34px;min-width:34px;height:38px;min-height:38px;justify-content:center;padding:8px;border:0;background:transparent;color:var(--cp-muted);order:2}
html[data-theme] .header-main .search-trigger .icon{width:17px;height:17px}
html[data-theme] .header-main .search-trigger .search-label,html[data-theme] .header-main .search-trigger kbd{display:none}
html[data-theme] .appearance-control{position:relative;display:flex;gap:4px;padding:3px;border:1px solid color-mix(in srgb,var(--cp-accent) 42%,var(--cp-border));border-radius:999px;background:color-mix(in srgb,var(--cp-accent-soft) 55%,var(--cp-surface));order:1}
html[data-theme] .appearance-control button{position:relative;display:flex;align-items:center;gap:6px;min-height:30px;min-width:55px;padding:6px 9px;border:0;border-radius:999px;font-size:10px;font-weight:500;color:var(--cp-muted);background:transparent;line-height:1;box-shadow:none}
html[data-theme] .appearance-control button svg{width:12px;height:12px}
html[data-theme] .appearance-control button[aria-pressed="true"]{background:color-mix(in srgb,var(--cp-accent) 35%,var(--cp-accent-soft));color:var(--cp-text);border:0;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--cp-accent) 35%,transparent)}
html[data-theme] .appearance-control button:hover{background:var(--cp-accent-soft);color:var(--cp-text)}
html[data-theme] .header-main .profile-button{display:flex;order:3;width:33px;height:38px;min-height:38px;padding:0;justify-content:center;background:transparent}
html[data-theme] .header-main .profile-button .avatar{width:29px;height:29px;border-radius:50%;background:transparent;border:1px solid var(--cp-border-strong);color:var(--cp-subtle)}
html[data-theme] .header-main .profile-button .avatar svg{width:16px;height:16px}
html[data-theme] .header-main .profile-copy,html[data-theme] .header-main .profile-arrow{display:none}
html[data-theme] .header-main .mobile-menu{order:4}
html[data-theme] .main-shell{width:100%;margin:0;min-width:0}
html[data-theme] .focus-mode .workspace-header{display:none}
@media(min-width:1025px) and (max-width:1250px){
  html[data-theme] .workspace-header{padding-left:28px;padding-right:28px;column-gap:25px}
  html[data-theme] .header-brand{gap:12px;padding-right:24px}
  html[data-theme] .header-brand .brand-name{font-size:22px}
  html[data-theme] .workspace-header .workspace-nav{gap:22px}
  html[data-theme] .workspace-header .workspace-nav a{font-size:14px}
  html[data-theme] .header-main .profile-button{display:none}
}
@media(max-width:1024px){
  html[data-theme]{scroll-padding-top:94px}
  html[data-theme] .workspace-header{display:block;min-height:0;padding:0;background:color-mix(in srgb,var(--cp-bg) 96%,transparent);z-index:70}
  html[data-theme] .workspace-header .header-main{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:none;min-height:78px;padding:17px 26px;gap:15px}
  html[data-theme] .header-brand{grid-column:auto;grid-row:auto;height:auto;padding:0;border:0;gap:10px}
  html[data-theme] .header-brand .brand-icon,html[data-theme] .header-brand .brand-icon svg{width:33px;height:35px}
  html[data-theme] .header-brand .brand-name{font-size:23px;letter-spacing:.01em}
  html[data-theme] .workspace-header .header-actions{display:flex;gap:10px}
  html[data-theme] .header-main .profile-button{display:none}
  html[data-theme] .header-main .mobile-menu{display:grid;place-items:center;width:37px;height:40px;min-height:40px;min-width:37px;padding:8px;border:0;background:transparent;color:var(--cp-text);border-radius:6px}
  html[data-theme] .header-main .mobile-menu svg{width:21px;height:21px}
  html[data-theme] .workspace-header .sidebar{position:fixed;top:0;left:0;bottom:0;width:min(86vw,335px);height:100dvh;max-height:100dvh;z-index:80;padding:25px 20px;background:var(--cp-bg);border-right:1px solid var(--cp-border);transform:translateX(-105%);visibility:hidden;overflow-y:auto;overscroll-behavior:contain;box-shadow:18px 0 70px color-mix(in srgb,var(--cp-shadow) 25%,transparent);transition:transform .23s ease,visibility .23s}
  html[data-theme] .menu-open .workspace-header .sidebar{transform:translateX(0);visibility:visible}
  html[data-theme] .drawer-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:33px}
  html[data-theme] .drawer-heading .brand{font-size:24px;max-width:none;gap:9px}
  html[data-theme] .drawer-heading .brand-icon{width:31px;height:34px}
  html[data-theme] .drawer-heading .brand-name{font-size:23px}
  html[data-theme] .drawer-heading .brand-name small{font-size:6px;margin-top:9px}
  html[data-theme] .workspace-header .sidebar-close{position:static;display:grid;place-items:center;width:42px;height:42px;min-width:42px;min-height:42px;padding:0;background:var(--cp-surface-soft);border:1px solid var(--cp-border);color:var(--cp-muted);font:26px/1 var(--sans);border-radius:8px}
  html[data-theme] .workspace-header .workspace-nav{display:grid;gap:8px;width:100%;max-width:none;padding:0}
  html[data-theme] .workspace-header .workspace-nav a,html[data-theme] .workspace-header .workspace-nav a[href="#overview"],html[data-theme] .workspace-header .workspace-nav a[href="#toolkit"],html[data-theme] .workspace-header .workspace-nav a[href="#progress"]{display:flex;justify-content:flex-start;gap:13px;min-height:48px;padding:14px;font-size:14px;border-radius:8px;line-height:1.4}
  html[data-theme] .workspace-header .workspace-nav a .icon{display:block;width:19px;height:19px}
  html[data-theme] .workspace-header .workspace-nav a[aria-current]{background:var(--cp-accent-soft);color:var(--cp-accent)}
  html[data-theme] .workspace-header .workspace-nav a[aria-current]:after{top:12px;bottom:12px;left:0;right:auto;width:3px;height:auto;box-shadow:none}
  html[data-theme] .workspace-header .nav-count{display:block;margin-left:auto;font-size:9px;padding:2px 5px}
  html[data-theme] .drawer-note{display:block;margin-top:33px;border-top:1px solid var(--cp-border);padding:23px 4px;font-size:10px;line-height:1.8;color:var(--cp-subtle)}
  html[data-theme] .drawer-note>a{display:block;color:var(--cp-accent);font-size:11px;margin-top:15px;min-height:34px}
  html[data-theme] .nav-backdrop:not([hidden]){display:block;position:fixed;inset:0;z-index:60;width:100%;height:100dvh;padding:0;border:0;border-radius:0;background:color-mix(in srgb,var(--cp-bg) 70%,transparent);backdrop-filter:blur(5px)}
}
@media(max-width:600px){
  html[data-theme] .workspace-header .header-main{min-height:68px;padding:14px 20px;gap:8px}
  html[data-theme] .header-brand{gap:8px}
  html[data-theme] .header-brand .brand-icon,html[data-theme] .header-brand .brand-icon svg{width:26px;height:29px}
  html[data-theme] .header-brand .brand-name{font-size:18px;letter-spacing:0}
  html[data-theme] .workspace-header .header-actions{gap:6px}
  html[data-theme] .header-main .search-trigger{display:flex;width:29px;max-width:29px;min-width:29px;height:34px;min-height:34px;padding:6px}
  html[data-theme] .appearance-control{gap:0;padding:2px;min-width:48px}
  html[data-theme] .appearance-control button{width:25px;height:25px;min-width:25px;min-height:25px;padding:5px;justify-content:center}
  html[data-theme] .appearance-control button span{display:none}
  html[data-theme] .appearance-control button svg{display:block;width:12px;height:12px}
  html[data-theme] .header-main .mobile-menu{width:31px;min-width:31px;height:34px;min-height:34px;padding:6px}
}
@media(max-width:374px){
  html[data-theme] .workspace-header .header-main{padding:13px 15px;min-height:66px}
  html[data-theme] .header-brand .brand-icon,html[data-theme] .header-brand .brand-icon svg{width:23px;height:26px}
  html[data-theme] .header-brand .brand-name{font-size:16px}
  html[data-theme] .workspace-header .header-actions{gap:4px}
}
@media(prefers-reduced-motion:reduce){html[data-theme] .workspace-header .sidebar{transition:none}}

@media(min-width:1025px){
  html[data-theme] .workspace-nav:has(a[href="#overview"][aria-current]) a[href="#lessons"]{color:var(--cp-text)}
  html[data-theme] .workspace-nav:has(a[href="#overview"][aria-current]) a[href="#lessons"]:after{content:"";position:absolute;left:0;right:0;bottom:19px;height:3px;border-radius:3px;background:var(--cp-accent);box-shadow:0 0 15px color-mix(in srgb,var(--cp-accent) 22%,transparent)}
}