/* Dental Course Hub UI */
.dch-app,.dch-wp-admin{--bg:#f6fbfc;--card:rgba(255,255,255,.84);--line:rgba(15,23,42,.10);--muted:#667085;--shadow:0 24px 80px rgba(15,23,42,.10);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--dch-dark,#101828)}
.dch-app{position:relative;isolation:isolate;min-height:70vh;background:linear-gradient(135deg,#f7fefe 0%,#f5f7ff 48%,#fff 100%);overflow:hidden;padding:42px 20px;border-radius:28px}
.dch-bg-grid{position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(37,99,235,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(14,165,163,.07) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(circle at 50% 0%,#000,transparent 75%)}
.dch-app:before,.dch-app:after{content:"";position:absolute;z-index:-1;border-radius:999px;filter:blur(6px);opacity:.45}.dch-app:before{width:440px;height:440px;right:-180px;top:-130px;background:radial-gradient(circle,var(--dch-accent),transparent 66%)}.dch-app:after{width:360px;height:360px;left:-130px;bottom:-160px;background:radial-gradient(circle,var(--dch-primary),transparent 66%)}
.dch-shell{width:min(1240px,100%);margin:0 auto}.dch-hero{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:26px}.dch-hero h1{font-size:clamp(38px,5vw,74px);line-height:.95;letter-spacing:-.07em;margin:12px 0 12px}.dch-hero p{font-size:18px;line-height:1.7;color:var(--muted);max-width:720px;margin:0}.dch-brand{display:inline-flex;align-items:center;gap:14px;padding:12px 16px;border:1px solid var(--line);background:rgba(255,255,255,.64);backdrop-filter:blur(18px);border-radius:999px;box-shadow:0 12px 40px rgba(15,23,42,.06)}.dch-brand img{width:42px;height:42px;object-fit:contain}.dch-brand strong{display:block;font-size:14px}.dch-brand span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.dch-orb{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;background:linear-gradient(135deg,var(--dch-primary),var(--dch-secondary) 55%,var(--dch-accent));color:#fff;box-shadow:0 12px 30px rgba(37,99,235,.25)}.dch-orb.big{width:72px;height:72px;font-size:30px;border-radius:24px;margin-bottom:16px}.dch-chip{display:inline-flex;align-items:center;gap:8px;width:max-content;padding:8px 12px;border-radius:999px;background:rgba(14,165,163,.10);color:var(--dch-primary);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.12em}.dch-muted{color:var(--muted)}
.dch-card,.dch-price-card,.dch-stats>div,.dch-tree-company,.dch-subtree{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:28px;padding:26px;backdrop-filter:blur(20px);position:relative;overflow:hidden}.dch-card:before,.dch-price-card:before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--dch-primary),var(--dch-secondary),var(--dch-accent));opacity:.8}.dch-card h2,.dch-card h3,.dch-price-card h2{margin-top:0;letter-spacing:-.04em}.dch-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}.dch-grid-2.compact{gap:14px}.dch-center{text-align:center;max-width:640px;margin:0 auto}.dch-footer{margin-top:34px;color:var(--muted);font-size:13px;text-align:center}.dch-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.dch-btn,.dch-app input[type=submit]{appearance:none;border:0;border-radius:999px;background:linear-gradient(135deg,var(--dch-primary),var(--dch-secondary));color:#fff!important;text-decoration:none!important;font-weight:800;padding:13px 19px;display:inline-flex;align-items:center;justify-content:center;gap:10px;box-shadow:0 16px 36px rgba(37,99,235,.22);cursor:pointer;transition:.25s}.dch-btn:hover,.dch-app input[type=submit]:hover{transform:translateY(-2px);box-shadow:0 22px 48px rgba(37,99,235,.30)}.dch-btn.ghost{background:#fff;color:var(--dch-dark)!important;border:1px solid var(--line);box-shadow:none}.dch-btn.small{padding:9px 13px;font-size:12px}.dch-mini-icon{display:inline-flex;align-items:center;justify-content:center;width:21px;height:21px;border-radius:999px;background:rgba(14,165,163,.13);color:var(--dch-primary);font-weight:900;margin-right:8px;flex:0 0 auto}
.dch-form{display:grid;gap:14px}.dch-form label{display:grid;gap:7px;font-size:13px;font-weight:800;color:#344054}.dch-form input,.dch-form textarea,.dch-form select,.dch-login-card input[type=text],.dch-login-card input[type=password]{width:100%;border:1px solid rgba(15,23,42,.12);background:rgba(255,255,255,.84);border-radius:16px;padding:13px 14px;font:inherit;box-shadow:inset 0 1px 0 rgba(255,255,255,.8)}.dch-form textarea{min-height:96px}.dch-form select[multiple]{height:auto}.dch-check{display:flex!important;grid-template-columns:auto 1fr!important;align-items:center}.dch-check input{width:auto!important}.dch-notice{border:1px solid rgba(14,165,163,.25);background:rgba(14,165,163,.10);padding:14px 18px;border-radius:18px;margin:0 0 18px;font-weight:800;color:#087f7d}
.dch-login-card{max-width:560px;margin:0 auto}.dch-login-card h1{font-size:44px;line-height:1;margin:12px 0}.dch-login-card form p{display:grid;gap:7px}.dch-login-card label{font-weight:800;color:#344054}.dch-login-card .login-remember label{display:flex;gap:8px;align-items:center}.dch-login-links{display:flex;justify-content:space-between;gap:16px;margin-top:15px}.dch-login-links a{color:var(--dch-secondary);font-weight:800;text-decoration:none}
.dch-pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.dch-price-card{display:flex;flex-direction:column;gap:14px}.dch-price-card.featured{transform:translateY(-10px);border-color:rgba(139,92,246,.32);box-shadow:0 35px 90px rgba(139,92,246,.17)}.dch-price-card h2{font-size:38px;margin:0}.dch-price-card ul,.dch-feature-list{list-style:none;padding:0;margin:0;display:grid;gap:12px}.dch-feature-list li,.dch-price-card li{display:flex;align-items:flex-start;color:#344054;line-height:1.5}.dch-price-card .dch-btn{margin-top:auto}
.dch-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:22px 0}.dch-stats>div{padding:20px}.dch-stats strong{display:block;font-size:30px;letter-spacing:-.05em}.dch-stats span{display:block;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.12em;font-weight:800}.dch-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.dch-tabs button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:12px 16px;font-weight:900;color:#344054;cursor:pointer}.dch-tabs button.active{background:var(--dch-dark);color:#fff;border-color:var(--dch-dark)}.dch-tab-panel{display:none}.dch-tab-panel.active{display:block}
.dch-course-list,.dch-student-list,.dch-calendar{display:grid;gap:12px}.dch-course-list article,.dch-student-list details,.dch-calendar article,.dch-lesson{border:1px solid var(--line);background:rgba(255,255,255,.68);border-radius:20px;padding:15px}.dch-course-list strong,.dch-calendar strong{display:block}.dch-course-list span,.dch-student-list span,.dch-calendar span,.dch-calendar time,.dch-lesson time{display:block;color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em}.dch-calendar article{position:relative;padding-left:52px}.dch-calendar article:before{content:"";position:absolute;left:18px;top:18px;width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,var(--dch-primary),var(--dch-accent));box-shadow:0 0 0 6px rgba(14,165,163,.10)}.dch-calendar article.now{border-color:rgba(239,68,68,.35);background:rgba(254,242,242,.75)}.dch-calendar article.now:after{content:"LIVE ORA";position:absolute;right:12px;top:12px;background:#ef4444;color:#fff;padding:5px 8px;border-radius:999px;font-size:10px;font-weight:900}.dch-locked{background:linear-gradient(135deg,rgba(148,163,184,.13),rgba(255,255,255,.9));border-radius:24px;padding:20px;color:var(--muted)}
.dch-course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:12px 0 28px}.dch-course-card h3{font-size:24px;margin:12px 0}.dch-course-card.owned{border-color:rgba(14,165,163,.20)}.dch-course-card.locked{opacity:.78}.dch-course-card details{margin-top:16px}.dch-course-card summary,.dch-tree-company summary,.dch-subtree summary{cursor:pointer;font-weight:900}.dch-embed{margin:12px 0;padding:12px;border-radius:18px;background:#f8fafc;overflow:auto}.dch-embed iframe{max-width:100%;border-radius:16px}.dch-files{display:flex;gap:8px;flex-wrap:wrap}.dch-files a{padding:8px 10px;border-radius:999px;background:rgba(37,99,235,.10);color:var(--dch-secondary);font-size:12px;font-weight:800;text-decoration:none}
.dch-admin-tree{display:grid;gap:18px}.dch-tree-company{padding:0}.dch-tree-company>summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;list-style:none}.dch-tree-company>summary::-webkit-details-marker,.dch-subtree>summary::-webkit-details-marker{display:none}.dch-tree-company>summary strong{font-size:20px}.dch-tree-company>summary span{color:var(--muted);font-size:13px}.dch-tree-body{padding:0 22px 22px;display:grid;gap:18px}.dch-subtree{box-shadow:none;padding:0;margin:12px 0}.dch-subtree summary{display:flex;justify-content:space-between;padding:16px}.dch-tree-lessons{padding:0 16px 16px}.dch-wp-admin .dch-card,.dch-wp-admin .dch-tree-company,.dch-wp-admin .dch-subtree{max-width:none}.dch-wp-admin .dch-stats{margin-right:20px}.dch-wp-admin code{background:#eef2ff;padding:4px 8px;border-radius:8px}.dch-form.mini{padding:14px;background:#f8fafc;border-radius:20px;margin-bottom:12px}
@media(max-width:980px){.dch-grid-2,.dch-pricing-grid,.dch-course-grid{grid-template-columns:1fr}.dch-stats{grid-template-columns:repeat(2,1fr)}.dch-hero{flex-direction:column}.dch-price-card.featured{transform:none}}@media(max-width:560px){.dch-app{padding:24px 14px;border-radius:20px}.dch-card,.dch-price-card{padding:20px;border-radius:22px}.dch-stats{grid-template-columns:1fr}.dch-hero h1{font-size:40px}.dch-tree-company>summary{flex-direction:column;align-items:flex-start}}

/* DCH 0.9 professional/futuristic refinement */
.dch-app,.dch-wp-admin{font-family:"Exo 2","Inter","Segoe UI",system-ui,-apple-system,sans-serif;}
.dch-app{background:linear-gradient(135deg,#f7fcff 0%,#eef8fb 45%,#f6f3ff 100%);}
.dch-bg-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(37,99,235,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.055) 1px,transparent 1px);background-size:34px 34px;mask-image:linear-gradient(180deg,#000,transparent 85%);pointer-events:none}.dch-card,.dch-price-card,.dch-stats>div,.dch-tree-company,.dch-subtree{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.dch-card:hover,.dch-price-card:hover,.dch-stats>div:hover{transform:translateY(-3px);box-shadow:0 24px 70px rgba(15,23,42,.12);border-color:rgba(37,99,235,.22)}
.dch-brand{background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.78)}.dch-hero h1{background:linear-gradient(135deg,#0f172a,var(--dch-secondary),var(--dch-accent));-webkit-background-clip:text;background-clip:text;color:transparent}.dch-chip{box-shadow:inset 0 0 0 1px rgba(14,165,163,.1)}
.dch-btn.danger{background:linear-gradient(135deg,#ef4444,#f97316)!important;color:#fff!important}.dch-btn.danger:hover{box-shadow:0 18px 42px rgba(239,68,68,.24)}
.dch-searchbar{display:flex;align-items:center;gap:10px;border:1px solid rgba(37,99,235,.15);background:rgba(255,255,255,.82);border-radius:20px;padding:10px 13px;margin:12px 0 18px;box-shadow:inset 0 1px 0 rgba(255,255,255,.9)}.dch-searchbar input{border:0!important;background:transparent!important;box-shadow:none!important;padding:8px!important;outline:none;font-weight:700;color:#0f172a}.dch-searchbar .dch-mini-icon{margin:0;flex:none}.dch-filter-hidden{display:none!important}
.dch-sos{border:1px solid rgba(239,68,68,.18);background:linear-gradient(135deg,rgba(255,255,255,.88),rgba(255,247,247,.86));border-radius:28px;padding:0;box-shadow:var(--shadow);overflow:hidden}.dch-sos summary{list-style:none;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:center;cursor:pointer;padding:22px}.dch-sos summary::-webkit-details-marker{display:none}.dch-sos strong{font-size:18px}.dch-sos span{grid-column:2;color:var(--muted);font-size:13px}.dch-sos form{padding:0 22px 22px}.dch-sos .dch-mini-icon{background:rgba(239,68,68,.12);color:#ef4444}
.dch-inline-edit{margin-top:12px;border-top:1px dashed rgba(15,23,42,.12);padding-top:12px}.dch-inline-edit summary{display:inline-flex;align-items:center;gap:7px;padding:8px 12px;border-radius:999px;background:rgba(37,99,235,.08);color:var(--dch-secondary);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.dch-inline-edit .dch-form{margin-top:12px}.dch-inline-edit form+form{margin-top:8px}
.dch-tree-company{background:linear-gradient(135deg,rgba(255,255,255,.92),rgba(247,252,255,.85));}.dch-tree-company>summary{background:linear-gradient(90deg,rgba(37,99,235,.06),rgba(139,92,246,.06));}.dch-tree-company>summary:before{content:"";width:12px;height:44px;border-radius:999px;background:linear-gradient(180deg,var(--dch-primary),var(--dch-accent));box-shadow:0 0 24px rgba(139,92,246,.25)}.dch-tree-company>summary{display:grid!important;grid-template-columns:auto 1fr auto}.dch-tree-company>summary strong{align-self:center}.dch-tree-company>summary span{align-self:center}
.dch-course-list article,.dch-student-list details,.dch-calendar article,.dch-lesson{transition:transform .2s ease,border-color .2s ease,background .2s ease}.dch-course-list article:hover,.dch-student-list details:hover,.dch-calendar article:hover,.dch-lesson:hover{transform:translateX(4px);border-color:rgba(14,165,163,.25);background:#fff}.dch-course-card{overflow:hidden}.dch-course-card:after{content:"";position:absolute;right:-45px;top:-45px;width:130px;height:130px;border-radius:38px;background:linear-gradient(135deg,rgba(14,165,163,.12),rgba(139,92,246,.12));transform:rotate(24deg)}.dch-course-card>*{position:relative;z-index:1}
.dch-wp-admin{padding-right:20px}.dch-wp-admin .dch-searchbar{max-width:680px}.dch-wp-admin h1{font-weight:900;letter-spacing:-.04em}.dch-wp-admin .dch-card{background:rgba(255,255,255,.94)}
@keyframes dchFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}.dch-orb{animation:dchFloat 5s ease-in-out infinite}.dch-stats>div strong{background:linear-gradient(135deg,var(--dch-primary),var(--dch-accent));-webkit-background-clip:text;background-clip:text;color:transparent}
@media(max-width:782px){.dch-tree-company>summary{grid-template-columns:1fr!important}.dch-searchbar{border-radius:16px}}