:root{
 --bg:#f6f8fc;--panel:#fff;--text:#0f172a;--muted:#64748b;
 --brand:#2563eb;--brand2:#0891b2;--border:#dbe4ef;--soft:#eef6ff;
 --good:#15803d;--bad:#b91c1c;--code:#0f172a;
}
html[data-theme="dark"]{
 --bg:#0b1220;--panel:#111b2e;--text:#e8eef8;--muted:#9fb0c6;
 --brand:#60a5fa;--brand2:#22d3ee;--border:#263650;--soft:#14233a;
 --good:#4ade80;--bad:#f87171;--code:#07111f;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.container{width:min(1180px,92%);margin:auto}
.topbar{position:sticky;top:0;z-index:20;background:var(--panel);border-bottom:1px solid var(--border)}
.nav{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:14px 0}
.brand{font-weight:900;color:var(--text)}.brand span{color:var(--brand)}
.navlinks{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 15px;border:1px solid var(--border);border-radius:12px;background:var(--panel);color:var(--text);font-weight:800;cursor:pointer}
.btn.primary{border:0;color:white;background:linear-gradient(135deg,var(--brand),var(--brand2))}
.btn.danger{color:var(--bad)}
.hero{padding:60px 0 34px;background:radial-gradient(circle at 15% 10%,rgba(37,99,235,.13),transparent 34%)}
.hero h1{font-size:clamp(2.3rem,5vw,4.7rem);line-height:1.02;margin:10px 0}.hero p{font-size:1.08rem;color:var(--muted);max-width:820px}
.badge{display:inline-flex;padding:7px 11px;border-radius:999px;background:var(--soft);color:var(--brand);font-weight:900;font-size:.86rem}
.section{padding:32px 0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:22px;box-shadow:0 12px 32px rgba(15,23,42,.05)}
.kpi{font-size:2.2rem;font-weight:900;color:var(--brand)}.muted{color:var(--muted)}
.callout{padding:14px 16px;border-radius:12px;background:var(--soft);border-left:4px solid var(--brand);margin:16px 0}
.callout.success{border-left-color:var(--good)}.callout.danger{border-left-color:var(--bad)}
.form-control{width:100%;padding:12px 13px;border:1px solid var(--border);border-radius:11px;background:var(--panel);color:var(--text);font:inherit}
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:14px}
table{width:100%;border-collapse:collapse;background:var(--panel)}th,td{padding:11px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{background:var(--soft)}
.footer{margin-top:40px;padding:28px 0;border-top:1px solid var(--border);color:var(--muted)}
.lesson-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:22px;padding:28px 0}
.sidebar{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:15px;height:max-content;position:sticky;top:82px}.sidebar a{display:block;padding:8px;color:var(--text)}
.content{background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:28px}
pre{background:var(--code);color:#dbeafe;padding:16px;border-radius:14px;overflow:auto}code{font-family:Consolas,monospace}
.progressbar{height:16px;border-radius:999px;background:var(--soft);overflow:hidden}.progressbar>span{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
.auth-shell{min-height:calc(100vh - 160px);display:flex;align-items:center;justify-content:center;padding:48px 24px}
.auth-panel{width:min(1080px,100%);display:grid;grid-template-columns:minmax(0,1.05fr) minmax(390px,.95fr);background:var(--panel);border:1px solid var(--border);border-radius:28px;overflow:hidden;box-shadow:0 24px 70px rgba(15,23,42,.10)}
.auth-intro{padding:52px;background:radial-gradient(circle at 15% 8%,rgba(37,99,235,.15),transparent 35%),linear-gradient(145deg,var(--soft),var(--panel))}
.auth-form{padding:52px}.auth-title{font-size:clamp(2.7rem,5vw,4.6rem);line-height:.96;margin:24px 0}
.field{margin:17px 0}.field label{display:block;font-weight:800;margin-bottom:7px}.field input{width:100%;padding:13px 14px;border:1px solid var(--border);border-radius:12px;background:var(--bg);color:var(--text);font:inherit}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.account-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.dashboard-section{padding-top:24px}.dashboard-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.summary-card{padding:18px}.summary-card span,.summary-card small{display:block;color:var(--muted)}.summary-card strong{display:block;margin:3px 0;color:var(--brand);font-size:2rem;line-height:1.2}.summary-card small{font-size:.78rem}.account-summary strong{font-size:1.25rem}.dashboard-heading{display:flex;justify-content:space-between;align-items:end;gap:22px;margin:34px 0 18px}.dashboard-heading h2,.purchase-guide h2{margin:8px 0 4px}.dashboard-heading p{margin:0}.dashboard-actions,.dashboard-account-actions,.product-actions{display:flex;gap:10px;flex-wrap:wrap}.customer-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.customer-product-card{display:flex;flex-direction:column}.product-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.product-card-top h3{margin:10px 0 6px;font-size:1.15rem}.product-card-top code{display:inline-block;padding:4px 7px;border-radius:7px;background:var(--code);color:#dbeafe;font-size:.76rem}.license-pill{flex:0 0 auto;padding:5px 9px;border-radius:999px;font-size:.7rem;font-weight:900}.license-active,.license-expiring{color:var(--good);background:rgba(34,197,94,.12)}.license-expired,.license-suspended{color:var(--bad);background:rgba(239,68,68,.12)}.license-pending,.license-inactive{color:#b7791f;background:rgba(245,158,11,.12)}.edition-line{display:flex;justify-content:space-between;gap:10px;margin:17px 0 8px;padding:11px 12px;border-radius:12px;background:var(--soft)}.product-description{color:var(--muted);font-size:.9rem}.license-details{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:12px 0 18px}.license-details div{padding:10px;border:1px solid var(--border);border-radius:11px}.license-details dt{color:var(--muted);font-size:.7rem;font-weight:800;text-transform:uppercase}.license-details dd{margin:2px 0 0;font-weight:850;font-size:.86rem}.product-actions{margin-top:auto}.access-message{margin:12px 0 0;color:var(--bad);font-size:.82rem}.purchase-guide{margin-top:24px}.purchase-guide ol{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;counter-reset:purchase;padding:0;list-style:none}.purchase-guide li{padding:15px;border:1px solid var(--border);border-radius:13px;background:var(--soft);counter-increment:purchase}.purchase-guide li:before{content:counter(purchase);display:grid;place-items:center;width:27px;height:27px;margin-bottom:8px;border-radius:8px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));font-weight:900}.dashboard-account-actions{justify-content:flex-end;margin-top:20px}.empty-products{text-align:center;padding:38px}
.edition-access-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:4px 0 16px}.edition-access{display:flex;min-width:0;flex-direction:column;padding:10px;border:1px solid var(--border);border-radius:11px;background:var(--soft)}.edition-access b{font-size:.76rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.edition-access small{font-size:.68rem;color:var(--muted)}.edition-access.available{border-color:rgba(34,197,94,.35);background:rgba(34,197,94,.09)}.edition-access.available small{color:var(--good);font-weight:800}.edition-access.locked{opacity:.62}
@media(max-width:1050px){.dashboard-summary,.license-details,.purchase-guide ol{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.grid,.account-grid,.lesson-layout,.auth-panel,.customer-product-grid{grid-template-columns:1fr}.sidebar{position:static}.navlinks{display:none}.auth-intro,.auth-form{padding:30px 24px}.dashboard-heading{align-items:flex-start;flex-direction:column}}
@media(max-width:580px){.dashboard-summary,.license-details,.purchase-guide ol{grid-template-columns:1fr}.edition-access-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.product-card-top{flex-direction:column}.customer-hero{padding-top:38px}.dashboard-actions .btn,.product-actions .btn{width:100%}}