body{background:var(--paper)}

/* ---------------- Login gate ---------------- */
.login-screen{
  min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
}
.login-card{
  width:100%;max-width:380px;background:var(--paper-raised);
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:36px 30px;box-shadow:var(--shadow-md);
}
.login-card img{height:30px;margin-bottom:22px}
.login-card h1{font-size:20px;margin-bottom:6px}
.login-card p{color:var(--ink-soft);font-size:14px;margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.field input[type=text],.field input[type=password],.field input[type=number],.field input[type=url],
.field textarea,.field select{
  width:100%;padding:11px 13px;border-radius:var(--radius-sm);
  border:1.5px solid var(--line-strong);background:var(--paper-raised);
  font-family:inherit;font-size:14.5px;color:var(--ink);
}
.field textarea{resize:vertical;min-height:88px}
.field-hint{font-size:12px;color:var(--ink-soft);margin-top:5px}
.login-error{color:#C4392C;font-size:13px;margin-bottom:14px;display:none}
.login-notice{color:var(--blue-deep);background:var(--blue-tint);padding:10px 12px;border-radius:8px;font-size:13px;margin-bottom:14px;display:none}

/* ---------------- Shell ---------------- */
.admin-shell{display:flex;min-height:100vh}
.admin-sidebar{
  width:230px;flex-shrink:0;background:var(--ink);color:#fff;
  padding:22px 16px;display:flex;flex-direction:column;gap:4px;
  position:sticky;top:0;height:100vh;
}
.admin-sidebar .brand-word{color:#fff}
.admin-sidebar-logo{display:flex;align-items:center;gap:10px;padding:0 8px 24px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:18px}
.admin-sidebar-logo img{height:26px}
.admin-nav-btn{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:8px;border:none;background:transparent;
  color:#C6D1E6;font-size:14.5px;font-weight:500;text-align:left;width:100%;
}
.admin-nav-btn:hover{background:rgba(255,255,255,.06);color:#fff}
.admin-nav-btn.active{background:var(--blue);color:#fff}
.admin-sidebar-foot{margin-top:auto;padding-top:16px;border-top:1px solid rgba(255,255,255,.12)}
.admin-logout{color:#9FB0CC;font-size:13px;background:none;border:none;padding:8px}
.admin-logout:hover{color:#fff}
.signed-in-as{display:block;color:#7C8DAE;font-size:11.5px;padding:0 8px;word-break:break-all}
.view-store-link{color:#9FB0CC;font-size:13px;display:block;padding:8px}
.view-store-link:hover{color:#fff}

.admin-main{flex:1;min-width:0;padding:32px 36px 60px}
.admin-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:12px}
.admin-topbar h1{font-size:24px}
.admin-topbar p{color:var(--ink-soft);font-size:14px;margin-top:4px}

@media (max-width:820px){
  .admin-shell{flex-direction:column}
  .admin-sidebar{
    width:100%;height:auto;position:static;
    flex-direction:row;overflow-x:auto;padding:12px 14px;gap:8px;
  }
  .admin-sidebar-logo{display:none}
  .admin-sidebar-foot{display:none}
  .admin-nav-btn{width:auto;white-space:nowrap}
  .admin-main{padding:22px 16px 48px}
}

/* ---------------- Cards / panels ---------------- */
.panel{
  background:var(--paper-raised);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:24px;margin-bottom:20px;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.panel-head h2{font-size:16px}

/* ---------------- Product list ---------------- */
.product-row{
  display:flex;align-items:center;gap:14px;
  padding:14px 12px;border-radius:10px;border:1px solid var(--line);
  margin-bottom:10px;
}
.product-row .row-cover{
  width:38px;height:52px;border-radius:3px;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  display:flex;align-items:center;justify-content:center;overflow:hidden;
  color:#fff;font-family:var(--font-mono);font-size:9px;font-weight:700;
}
.product-row .row-cover img{width:100%;height:100%;object-fit:cover}
.product-row .row-body{flex:1;min-width:0}
.product-row .row-title{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.product-row .row-meta{font-size:12.5px;color:var(--ink-soft);margin-top:2px}
.product-row .row-actions{display:flex;gap:8px;flex-shrink:0}
.icon-btn{
  width:34px;height:34px;border-radius:8px;border:1.5px solid var(--line-strong);
  background:var(--paper-raised);display:flex;align-items:center;justify-content:center;
  color:var(--ink-soft);
}
.icon-btn:hover{border-color:var(--blue);color:var(--blue)}
.icon-btn.danger:hover{border-color:#C4392C;color:#C4392C}
.icon-btn svg{width:16px;height:16px}
.status-pill{font-size:11px;font-weight:600;padding:3px 9px;border-radius:20px;font-family:var(--font-mono)}
.status-pill.live{background:#EAFBF2;color:var(--green)}
.status-pill.hidden{background:var(--line);color:var(--ink-soft)}

/* ---------------- Form ---------------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .span-2{grid-column:1 / -1}
@media (max-width:640px){.form-grid{grid-template-columns:1fr}}

.cover-upload{
  display:flex;align-items:center;gap:16px;
  border:1.5px dashed var(--line-strong);border-radius:var(--radius-sm);
  padding:16px;
}
.cover-preview{
  width:64px;height:88px;border-radius:4px;flex-shrink:0;overflow:hidden;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-family:var(--font-mono);
}
.cover-preview img{width:100%;height:100%;object-fit:cover}

.delivery-toggle{display:flex;gap:10px;margin-bottom:12px}
.delivery-toggle button{
  flex:1;padding:9px;border-radius:8px;border:1.5px solid var(--line-strong);
  background:var(--paper-raised);font-size:13px;font-weight:600;color:var(--ink-soft);
}
.delivery-toggle button.active{border-color:var(--blue);color:var(--blue);background:var(--blue-tint)}

.form-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}

.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(12px);
  background:var(--ink);color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;
  opacity:0;pointer-events:none;transition:opacity .2s ease, transform .2s ease;z-index:200;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.settings-photo-row{display:flex;align-items:center;gap:16px;margin-bottom:6px}
.settings-photo-preview{
  width:64px;height:64px;border-radius:50%;overflow:hidden;flex-shrink:0;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-display);font-weight:700;
}
.settings-photo-preview img{width:100%;height:100%;object-fit:cover}

.rates-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:640px){.rates-grid{grid-template-columns:1fr 1fr}}

/* ---------------- Chapters (course) ---------------- */
.chapter-row{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;
}
.chapter-num{
  width:26px;height:26px;border-radius:50%;background:var(--blue-tint);color:var(--blue-deep);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;margin-top:2px;
}
.chapter-fields{flex:1;display:flex;flex-direction:column;gap:8px}
.chapter-fields input{
  width:100%;padding:9px 12px;border-radius:6px;border:1.5px solid var(--line-strong);font-size:14px;
}
.chapter-remove{flex-shrink:0;margin-top:2px}

/* ---------------- Lessons (course workspace) ---------------- */
.lesson-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.lesson-tab-btn{
  padding:8px 14px;border-radius:20px;border:1.5px solid var(--line-strong);
  background:var(--paper-raised);font-size:13px;font-weight:600;color:var(--ink-soft);
}
.lesson-tab-btn.active{border-color:var(--blue);color:var(--blue);background:var(--blue-tint)}
.lesson-row{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;
}
.lesson-row .lesson-num{
  width:26px;height:26px;border-radius:50%;background:var(--blue-tint);color:var(--blue-deep);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0;margin-top:2px;
}
.lesson-row .lesson-body{flex:1;min-width:0}
.lesson-row .lesson-title{font-weight:600;font-size:14px}
.lesson-row .lesson-desc{font-size:12.5px;color:var(--ink-soft);margin-top:2px}
.lesson-row .lesson-meta{font-size:11.5px;color:var(--ink-soft);margin-top:6px;display:flex;gap:10px;flex-wrap:wrap}
.lesson-row .lesson-remove{flex-shrink:0;margin-top:2px}
.lesson-add-form{
  border:1.5px dashed var(--line-strong);border-radius:var(--radius-sm);
  padding:16px;margin-top:6px;
}

/* ---------------- Analytics ---------------- */
.stat-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px;
}
.stat-card{
  background:var(--paper-raised);border:1px solid var(--line);border-radius:12px;
  padding:18px;display:flex;flex-direction:column;gap:6px;
}
.stat-label{font-size:12px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.03em}
.stat-value{font-family:var(--font-display);font-size:24px;font-weight:700;color:var(--ink)}
@media (max-width:760px){.stat-grid{grid-template-columns:1fr 1fr}}

.simple-table{width:100%;border-collapse:collapse;font-size:13.5px}
.simple-table th{
  text-align:left;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;
  color:var(--ink-soft);padding:0 10px 10px;border-bottom:1px solid var(--line);
}
.simple-table td{padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.simple-table tr:last-child td{border-bottom:none}
.simple-table .muted{color:var(--ink-soft);font-size:12.5px}
.student-courses{display:flex;flex-direction:column;gap:3px}
.student-courses span{font-size:12.5px;color:var(--ink-soft)}

.module-pill{
  display:inline-flex;align-items:center;gap:4px;
  border:1.5px solid var(--line-strong);border-radius:20px;padding:6px 6px 6px 14px;
  font-size:13.5px;font-weight:600;cursor:pointer;margin:0 8px 8px 0;
}
.module-pill.active{border-color:var(--blue);background:var(--blue-tint);color:var(--blue-deep)}
.module-pill-icon{
  border:none;background:transparent;cursor:pointer;font-size:12px;
  padding:4px 6px;border-radius:50%;opacity:.6;
}
.module-pill-icon:hover{opacity:1;background:rgba(0,0,0,.06)}

.icon-btn:disabled{opacity:.35;cursor:not-allowed}
.icon-btn:disabled:hover{border-color:var(--line);color:inherit}