@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Space+Grotesk:wght@700;800&display=swap');

:root {
  --op-ink:#0f172a; --op-ink2:#1e293b; --op-accent:#6366f1; --op-accent-dark:#4338ca; --op-accent-light:#eef2ff;
  --op-g50:#f8fafc; --op-g100:#f1f5f9; --op-g200:#e2e8f0; --op-g300:#cbd5e1; --op-g400:#94a3b8; --op-g500:#64748b; --op-g600:#475569;
  --op-green:#16a34a; --op-green-l:#dcfce7; --op-red:#dc2626; --op-red-l:#fee2e2; --op-amber:#d97706; --op-amber-l:#fef3c7;
  --op-r:12px; --op-sh:0 1px 3px rgba(15,23,42,.08); --op-shm:0 4px 16px rgba(15,23,42,.12);
  --op-fnt:'Inter',sans-serif; --op-dsp:'Space Grotesk',sans-serif;
}

*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:16px; }
body { font-family:var(--op-fnt); color:var(--op-ink); background:var(--op-g50); -webkit-font-smoothing:antialiased; }
a { color:inherit; text-decoration:none; cursor:pointer; }
button { font-family:inherit; cursor:pointer; }
input, select, textarea { font-family:inherit; font-size:13px; border:1.5px solid var(--op-g200); border-radius:8px; padding:8px 11px; width:100%; background:#fff; color:var(--op-ink); }
input:focus, select:focus, textarea:focus { outline:none; border-color:var(--op-accent); }

.op-login-body { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,var(--op-ink) 0%,var(--op-ink2) 100%); }
.op-login-card { background:#fff; border-radius:16px; padding:36px 32px; width:340px; box-shadow:0 20px 60px rgba(0,0,0,.35); }
.op-login-brand { display:flex; align-items:center; gap:12px; margin-bottom:24px; }
.op-login-mark { width:44px; height:44px; object-fit:contain; flex-shrink:0; }
.op-login-mark-sm { width:32px; height:32px; }
.op-login-title { font-family:var(--op-dsp); font-weight:800; font-size:18px; }
.op-login-sub { font-size:11px; color:var(--op-g500); text-transform:uppercase; letter-spacing:.6px; }
.op-fg { margin-bottom:14px; }
.op-fg label { display:block; font-size:11px; font-weight:700; color:var(--op-g600); text-transform:uppercase; letter-spacing:.4px; margin-bottom:5px; }
.op-error { background:var(--op-red-l); color:var(--op-red); font-size:12.5px; font-weight:600; padding:9px 12px; border-radius:8px; margin-bottom:14px; }

.op-btn { border:none; border-radius:9px; padding:9px 16px; font-size:13px; font-weight:700; transition:all .15s; display:inline-flex; align-items:center; gap:6px; justify-content:center; }
.op-btn-primary { background:var(--op-accent); color:#fff; }
.op-btn-primary:hover { background:var(--op-accent-dark); }
.op-btn-ghost { background:var(--op-g100); color:var(--op-ink); }
.op-btn-ghost:hover { background:var(--op-g200); }
.op-btn-danger { background:var(--op-red-l); color:var(--op-red); }
.op-btn-danger:hover { background:#fecaca; }
.op-btn-sm { padding:6px 11px; font-size:12px; }
.op-btn-full { width:100%; }
.op-btn:disabled { opacity:.5; cursor:not-allowed; }

.op-nav { height:56px; background:var(--op-ink); color:#fff; display:flex; align-items:center; justify-content:space-between; padding:0 20px; position:sticky; top:0; z-index:100; }
.op-nav-brand { display:flex; align-items:center; gap:10px; }
.op-nav-title { font-family:var(--op-dsp); font-weight:800; font-size:14px; line-height:1.2; }
.op-nav-title span { display:block; font-size:9px; font-weight:600; color:var(--op-g400); text-transform:uppercase; letter-spacing:.6px; }
.op-nav-user { display:flex; align-items:center; gap:8px; cursor:pointer; position:relative; padding:6px 10px; border-radius:9px; transition:background .15s; font-size:13px; font-weight:600; }
.op-nav-user:hover { background:rgba(255,255,255,.08); }
.op-avatar { width:28px; height:28px; border-radius:50%; background:var(--op-accent); display:flex; align-items:center; justify-content:center; font-weight:800; font-size:12px; }
.op-user-menu { position:absolute; top:calc(100% + 8px); right:0; background:#fff; color:var(--op-ink); border-radius:10px; box-shadow:var(--op-shm); min-width:170px; overflow:hidden; z-index:200; }
.op-menu-item { padding:10px 14px; font-size:13px; font-weight:600; transition:background .15s; }
.op-menu-item:hover { background:var(--op-g100); }
.op-menu-danger { color:var(--op-red); }

.op-body { display:flex; min-height:calc(100vh - 56px); }
.op-sidebar { width:220px; background:#fff; border-right:1px solid var(--op-g200); flex-shrink:0; padding:16px 10px; }
.op-snav { list-style:none; }
.op-snav-heading { font-size:10.5px; font-weight:800; text-transform:uppercase; letter-spacing:.6px; color:var(--op-g400); padding:16px 12px 6px; }
.op-snav-heading:first-child { padding-top:2px; }
.op-snav li a { display:flex; align-items:center; gap:10px; padding:9px 12px; border-radius:8px; font-size:13px; font-weight:600; color:var(--op-g600); margin-bottom:2px; transition:all .15s; }
.op-snav li a:hover { background:var(--op-g100); color:var(--op-ink); }
.op-snav li a.act { background:var(--op-accent-light); color:var(--op-accent-dark); }
.op-main { flex:1; padding:24px 28px; min-width:0; }
.op-loading { text-align:center; padding:60px; color:var(--op-g400); }

.op-ph { display:flex; align-items:flex-start; justify-content:space-between; gap:16px; margin-bottom:20px; flex-wrap:wrap; }
.op-ph h1 { font-family:var(--op-dsp); font-size:22px; font-weight:800; }
.op-ph p { font-size:13px; color:var(--op-g500); margin-top:3px; }
.op-card { background:#fff; border-radius:var(--op-r); border:1px solid var(--op-g200); box-shadow:var(--op-sh); margin-bottom:16px; overflow:hidden; }
.op-card-h { padding:14px 18px; border-bottom:1px solid var(--op-g100); display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; }
.op-card-h h3 { font-size:14px; font-weight:800; }
.op-card-b { padding:18px; }
.op-card-b.op-flush { padding:0; }

.op-tbl-w { overflow-x:auto; }
.op-tbl { width:100%; border-collapse:collapse; font-size:13px; }
.op-tbl th { text-align:left; font-size:10.5px; font-weight:800; text-transform:uppercase; letter-spacing:.4px; color:var(--op-g500); padding:10px 14px; border-bottom:2px solid var(--op-g100); white-space:nowrap; }
.op-tbl td { padding:11px 14px; border-bottom:1px solid var(--op-g100); }
.op-tbl tr:last-child td { border-bottom:none; }
.op-tbl tr:hover td { background:var(--op-g50); }
.op-tbl tr.op-row-link { cursor:pointer; }

.op-badge { display:inline-flex; align-items:center; padding:3px 9px; border-radius:100px; font-size:11px; font-weight:700; white-space:nowrap; }
.op-badge-trial { background:var(--op-amber-l); color:var(--op-amber); }
.op-badge-active { background:var(--op-green-l); color:var(--op-green); }
.op-badge-suspended { background:var(--op-red-l); color:var(--op-red); }
.op-badge-cancelled { background:var(--op-g200); color:var(--op-g600); }
.op-badge-gray { background:var(--op-g100); color:var(--op-g600); }
.op-badge-draft { background:var(--op-g200); color:var(--op-g600); }
.op-badge-sent { background:var(--op-amber-l); color:var(--op-amber); }
.op-badge-paid { background:var(--op-green-l); color:var(--op-green); }
.op-badge-overdue { background:var(--op-red-l); color:var(--op-red); }
.op-badge-void { background:var(--op-g200); color:var(--op-g600); }
.op-badge-low { background:var(--op-g100); color:var(--op-g600); }
.op-badge-normal { background:var(--op-g100); color:var(--op-g600); }
.op-badge-high { background:var(--op-amber-l); color:var(--op-amber); }
.op-badge-urgent { background:var(--op-red-l); color:var(--op-red); }
.op-badge-open { background:var(--op-red-l); color:var(--op-red); }
.op-badge-in_progress { background:var(--op-amber-l); color:var(--op-amber); }
.op-badge-resolved { background:var(--op-green-l); color:var(--op-green); }
.op-badge-closed { background:var(--op-g200); color:var(--op-g600); }

.op-stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:12px; margin-bottom:16px; }
.op-stat { background:#fff; border:1px solid var(--op-g200); border-radius:var(--op-r); padding:14px 16px; }
.op-stat-val { font-family:var(--op-dsp); font-size:24px; font-weight:800; }
.op-stat-lbl { font-size:11px; color:var(--op-g500); font-weight:700; text-transform:uppercase; letter-spacing:.3px; margin-top:2px; }

.op-tabs { display:flex; gap:4px; border-bottom:1px solid var(--op-g200); margin-bottom:18px; overflow-x:auto; }
.op-tab { padding:9px 14px; font-size:12.5px; font-weight:700; color:var(--op-g500); border-bottom:2.5px solid transparent; white-space:nowrap; cursor:pointer; }
.op-tab.act { color:var(--op-accent-dark); border-bottom-color:var(--op-accent); }

.op-modal-overlay { position:fixed; inset:0; background:rgba(15,23,42,.5); display:flex; align-items:center; justify-content:center; z-index:1000; padding:20px; }
.op-modal { background:#fff; border-radius:16px; max-width:520px; width:100%; max-height:85vh; overflow-y:auto; padding:24px; }
.op-modal h2 { font-family:var(--op-dsp); font-size:17px; font-weight:800; margin-bottom:16px; }

.op-kanban { display:flex; gap:14px; overflow-x:auto; padding-bottom:8px; }
.op-kanban-col { min-width:230px; flex-shrink:0; }
.op-kanban-col-h { font-size:11px; font-weight:800; text-transform:uppercase; letter-spacing:.4px; color:var(--op-g500); padding:0 4px 10px; }
.op-kanban-card { background:#fff; border:1px solid var(--op-g200); border-radius:10px; padding:11px 13px; margin-bottom:8px; cursor:pointer; transition:box-shadow .15s; }
.op-kanban-card:hover { box-shadow:var(--op-sh); }

.op-empty { text-align:center; padding:40px 20px; color:var(--op-g400); font-size:13px; }
.op-mono { font-family:'SF Mono',Consolas,monospace; font-size:12px; }
.op-checklist-item { display:flex; gap:8px; padding:7px 0; font-size:13px; border-bottom:1px solid var(--op-g100); }
.op-code-block { background:var(--op-ink); color:#e2e8f0; border-radius:8px; padding:12px 14px; font-family:'SF Mono',Consolas,monospace; font-size:12px; overflow-x:auto; white-space:pre; margin:8px 0; position:relative; }
.op-copy-btn { position:absolute; top:8px; right:8px; background:rgba(255,255,255,.15); color:#fff; border:none; border-radius:6px; padding:4px 8px; font-size:11px; }

.op-nav-burger { display:none; background:none; border:none; color:#fff; font-size:20px; padding:4px 8px; margin-right:4px; border-radius:6px; }
.op-nav-burger:hover { background:rgba(255,255,255,.1); }

.pb-nav-ul { list-style:none; }
.pb-nav-item { display:flex; align-items:center; gap:10px; padding:9px 10px; border:1px solid var(--op-g200); border-radius:8px; margin-bottom:6px; background:#fff; cursor:default; }
.pb-nav-item.pb-nav-child { margin-left:28px; background:var(--op-g50); }
.pb-nav-handle { cursor:grab; color:var(--op-g400); font-size:14px; }
.pb-nav-label { font-weight:700; font-size:13px; cursor:pointer; }
.pb-nav-target { flex:1; color:var(--op-g500); font-size:12px; cursor:pointer; }
.pb-nav-item.pb-dragging { opacity:.4; }
.pb-nav-item.pb-drop-before { box-shadow:0 -3px 0 0 var(--op-accent); }
.pb-nav-item.pb-drop-after { box-shadow:0 3px 0 0 var(--op-accent); }
.pb-nav-item.pb-drop-nest { background:var(--op-accent-light); border-color:var(--op-accent); }
.op-sidebar-backdrop { display:none; }

@media (max-width: 860px) {
  .op-nav-burger { display:inline-block; }
  .op-sidebar {
    position:fixed; top:56px; left:0; bottom:0; z-index:150;
    transform:translateX(-100%); transition:transform .2s ease;
    overflow-y:auto; box-shadow:var(--op-shm);
  }
  .op-sidebar.open { transform:translateX(0); }
  .op-sidebar-backdrop {
    display:block; position:fixed; inset:56px 0 0 0; z-index:140;
    background:rgba(15,23,42,.4); opacity:0; pointer-events:none; transition:opacity .2s ease;
  }
  .op-sidebar-backdrop.open { opacity:1; pointer-events:auto; }
  .op-main { padding:16px; }
  .op-stats { grid-template-columns:1fr 1fr; }
}

.sb-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:10px; }
.sb-card { display:flex; align-items:center; gap:10px; padding:12px; border:1px solid var(--op-g200); border-radius:10px; background:#fff; transition:border-color .15s,background .15s; }
.sb-card.sb-on { border-color:var(--op-accent); background:var(--op-accent-light); }
.sb-card-icon { font-size:20px; line-height:1; }
.sb-card-label { flex:1; font-size:13px; font-weight:700; }
.sb-switch { position:relative; display:inline-block; width:38px; height:22px; flex-shrink:0; }
.sb-switch input { opacity:0; width:0; height:0; }
.sb-switch span { position:absolute; inset:0; background:var(--op-g300); border-radius:100px; cursor:pointer; transition:background .15s; }
.sb-switch span::before { content:''; position:absolute; width:16px; height:16px; left:3px; top:3px; background:#fff; border-radius:50%; transition:transform .15s; box-shadow:0 1px 3px rgba(0,0,0,.2); }
.sb-switch input:checked + span { background:var(--op-accent); }
.sb-switch input:checked + span::before { transform:translateX(16px); }
.sb-structure-group { margin-bottom:18px; }
.sb-structure-group h4 { font-size:12px; font-weight:800; text-transform:uppercase; letter-spacing:.4px; color:var(--op-g500); margin-bottom:10px; }

.sb-preview { border-radius:var(--op-r); overflow:hidden; border:1px solid var(--op-g200); }
.sb-preview-topbar { display:flex; align-items:center; gap:10px; padding:14px 18px; }
.sb-preview-logo { width:30px; height:30px; border-radius:8px; background:rgba(255,255,255,.25); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; font-size:14px; flex-shrink:0; }
.sb-preview-schoolname { color:#fff; font-weight:800; font-size:14px; font-family:var(--op-dsp); }
.sb-preview-body { display:flex; min-height:480px; background:var(--op-g50); }
.sb-preview-sidebar { width:270px; flex-shrink:0; background:#fff; border-right:1px solid var(--op-g200); padding:10px; overflow-y:auto; max-height:640px; }
.sb-preview-content { flex:1; padding:24px; display:flex; flex-direction:column; gap:14px; }
.sb-preview-content-block { height:14px; border-radius:6px; background:var(--op-g200); opacity:.6; }
.sb-preview-content-hint { margin-top:auto; font-size:12px; color:var(--op-g400); text-align:center; }

.sb-nav-row { display:flex; align-items:center; gap:8px; padding:8px 8px; border-radius:8px; margin-bottom:2px; cursor:grab; transition:background .1s; }
.sb-nav-row:hover { background:var(--op-g50); }
.sb-nav-row.sb-nav-dragging { opacity:.4; }
.sb-nav-row.sb-nav-off { opacity:.45; }
.sb-nav-handle { color:var(--op-g300); font-size:15px; line-height:1; cursor:grab; user-select:none; flex-shrink:0; }
.sb-nav-icon { width:28px; height:28px; border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:14px; flex-shrink:0; }
.sb-nav-label { flex:1; font-size:13px; font-weight:600; padding:3px 6px; border-radius:6px; outline:none; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.sb-nav-label:hover { background:var(--op-g100); }
.sb-nav-label:focus { background:#fff; box-shadow:0 0 0 2px var(--op-accent); white-space:normal; }
.sb-nav-locked { font-size:11px; opacity:.5; flex-shrink:0; }
.sb-switch-sm { width:30px; height:18px; flex-shrink:0; }
.sb-switch-sm span::before { width:12px; height:12px; }
.sb-switch-sm input:checked + span::before { transform:translateX(12px); }

@media (max-width: 760px) {
  .sb-preview-body { flex-direction:column; }
  .sb-preview-sidebar { width:100%; max-height:none; border-right:none; border-bottom:1px solid var(--op-g200); }
}