/* =========================================================
   Studio CMS — Stripe-inspired design system
   ========================================================= */
:root{
  --bg:#f6f9fc;
  --surface:#ffffff;
  --surface-2:#fafbfc;
  --border:#e3e8ee;
  --border-strong:#c1c9d2;
  --text:#1a1f36;
  --text-muted:#697386;
  --text-soft:#8792a2;
  --primary:#635bff;
  --primary-600:#5851ec;
  --primary-50:#eeedff;
  --green:#0a7d3b; --green-50:#e6f6ec;
  --red:#b3093c;   --red-50:#ffe7f1;
  --yellow:#a76a00;--yellow-50:#fff5d6;
  --blue:#0055bc;  --blue-50:#e3effe;
  --purple:#5e2ca5;--purple-50:#ede4f9;
  --gray-50:#f1f3f6;
  --shadow-sm:0 1px 2px rgba(50,50,93,.06),0 1px 1px rgba(0,0,0,.04);
  --shadow:0 2px 5px rgba(50,50,93,.08),0 1px 2px rgba(0,0,0,.05);
  --shadow-lg:0 7px 14px rgba(50,50,93,.10),0 3px 6px rgba(0,0,0,.07);
  --radius:8px;
  --radius-lg:12px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0;color:var(--text);font-weight:600;letter-spacing:-0.01em}
h1{font-size:24px}h2{font-size:18px}h3{font-size:15px}
hr{border:0;border-top:1px solid var(--border);margin:24px 0}

/* ---------- Layout ---------- */
.app{display:flex;min-height:100vh}
.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:20px 20px;border-bottom:1px solid var(--border)}
.brand-mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#9d8eff);color:#fff;display:grid;place-items:center;font-weight:700;font-size:16px}
.brand-name{font-weight:600;font-size:15px}
.sidebar nav{padding:12px 8px;flex:1;overflow-y:auto}
.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;color:var(--text-muted);font-weight:500;font-size:13.5px;margin-bottom:2px}
.nav-item:hover{background:var(--gray-50);color:var(--text);text-decoration:none}
.nav-item.active{background:var(--primary-50);color:var(--primary)}
.nav-item .ic{width:18px;text-align:center;opacity:.7;font-size:13px}
.nav-sep{font-size:11px;text-transform:uppercase;color:var(--text-soft);padding:14px 12px 6px;letter-spacing:.06em;font-weight:600}
.sidebar-foot{padding:16px 20px;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}
.sidebar-foot .user{font-weight:500;color:var(--text)}
.sidebar-foot .logout{font-size:12px}
.main{flex:1;padding:32px 40px;max-width:1280px;width:100%}

/* ---------- Page header ---------- */
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;gap:16px;flex-wrap:wrap}
.page-head .sub{color:var(--text-muted);font-size:13px;margin-top:4px}
.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap}

/* ---------- Cards ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.card-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.card-head h2{font-size:15px}
.card-body{padding:20px}
.card.pad{padding:20px}

/* ---------- Stats grid ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px 20px;box-shadow:var(--shadow-sm)}
.stat .label{color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.stat .value{font-size:24px;font-weight:600;margin-top:6px;letter-spacing:-0.02em}
.stat .delta{font-size:12px;color:var(--text-muted);margin-top:4px}
.stat .delta.up{color:var(--green)}
.stat .delta.down{color:var(--red)}

/* ---------- Tables ---------- */
table.t{width:100%;border-collapse:collapse;font-size:13.5px}
table.t th,table.t td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}
table.t th{font-weight:600;color:var(--text-muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;background:var(--surface-2)}
table.t tr:last-child td{border-bottom:0}
table.t tr:hover td{background:var(--surface-2)}
table.t td.num,table.t th.num{text-align:right;font-variant-numeric:tabular-nums}
table.t .row-actions a{color:var(--text-muted);margin-left:10px;font-size:12px}
table.t .row-actions a.danger{color:var(--red)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:6px;font-weight:500;font-size:13px;border:1px solid transparent;cursor:pointer;background:var(--surface);color:var(--text);transition:all .12s;font-family:inherit;text-decoration:none}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 1px rgba(0,0,0,.05),0 1px 2px rgba(0,0,0,.05),inset 0 1px 0 rgba(255,255,255,.1)}
.btn-primary:hover{background:var(--primary-600);color:#fff}
.btn-secondary{border-color:var(--border);background:var(--surface);color:var(--text)}
.btn-secondary:hover{border-color:var(--border-strong);background:var(--surface-2)}
.btn-ghost{background:transparent;color:var(--text-muted)}
.btn-ghost:hover{background:var(--gray-50);color:var(--text)}
.btn-danger{background:var(--red);color:#fff}
.btn-sm{padding:5px 10px;font-size:12px}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-grid .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:12.5px;font-weight:500;color:var(--text)}
.field .hint{font-size:11.5px;color:var(--text-soft)}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],input[type=tel],select,textarea{
  width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:13.5px;font-family:inherit;background:#fff;color:var(--text);transition:border .12s,box-shadow .12s;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-50)}
textarea{min-height:84px;resize:vertical}
.form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:20px;padding-top:20px;border-top:1px solid var(--border)}

/* ---------- Badges ---------- */
.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600;letter-spacing:.02em}
.badge-gray{background:var(--gray-50);color:var(--text-muted)}
.badge-blue{background:var(--blue-50);color:var(--blue)}
.badge-green{background:var(--green-50);color:var(--green)}
.badge-red{background:var(--red-50);color:var(--red)}
.badge-yellow{background:var(--yellow-50);color:var(--yellow)}
.badge-purple{background:var(--purple-50);color:var(--purple)}

/* ---------- Modal ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(26,31,54,.4);display:none;align-items:center;justify-content:center;z-index:50;padding:20px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:100%;max-width:560px;max-height:90vh;overflow-y:auto}
.modal-head{padding:20px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.modal-head h2{font-size:16px}
.modal-body{padding:24px}
.modal-close{background:none;border:0;font-size:20px;cursor:pointer;color:var(--text-muted);padding:0;width:28px;height:28px;border-radius:6px}
.modal-close:hover{background:var(--gray-50)}

/* ---------- Flash ---------- */
.flash{padding:12px 16px;border-radius:8px;margin-bottom:20px;font-size:13.5px;border:1px solid}
.flash-success{background:var(--green-50);border-color:#b7e4c7;color:var(--green)}
.flash-error{background:var(--red-50);border-color:#fbb;color:var(--red)}

/* ---------- Login ---------- */
.login-wrap{min-height:100vh;display:grid;place-items:center;background:linear-gradient(180deg,#f6f9fc 0%,#eef2f7 100%);padding:20px}
.login-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:36px;width:100%;max-width:380px}
.login-card .brand{padding:0 0 24px;border:0;justify-content:center}
.login-card h1{font-size:18px;text-align:center;margin-bottom:24px}

/* ---------- Calendar ---------- */
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}
.cal .dh{background:var(--surface-2);padding:8px 10px;font-size:11.5px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}
.cal .day{background:#fff;min-height:96px;padding:6px 8px;font-size:12px;display:flex;flex-direction:column;gap:3px}
.cal .day.other{background:var(--surface-2);color:var(--text-soft)}
.cal .day.today .num{background:var(--primary);color:#fff;border-radius:50%;width:22px;height:22px;display:inline-grid;place-items:center;font-size:11px;font-weight:600}
.cal .day .num{font-weight:600;color:var(--text)}
.cal .ev{font-size:11px;padding:2px 6px;border-radius:4px;background:var(--blue-50);color:var(--blue);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.cal .ev.deadline{background:var(--red-50);color:var(--red)}
.cal .ev.renewal{background:var(--yellow-50);color:var(--yellow)}
.cal .ev.task{background:var(--green-50);color:var(--green)}

/* ---------- Misc ---------- */
.row{display:flex;gap:16px;flex-wrap:wrap}
.row > *{flex:1;min-width:280px}
.muted{color:var(--text-muted)}
.empty{padding:48px 20px;text-align:center;color:var(--text-muted);font-size:13.5px}
.kpi-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.kpi-row > div{padding:16px 20px;border-right:1px solid var(--border)}
.kpi-row > div:last-child{border-right:0}
.kpi-row .l{font-size:11.5px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}
.kpi-row .v{font-size:20px;font-weight:600;margin-top:4px}
.progress{height:6px;background:var(--gray-50);border-radius:999px;overflow:hidden;margin-top:6px}
.progress > span{display:block;height:100%;background:var(--primary);border-radius:999px}

/* checkbox list */
.todo{display:flex;align-items:center;gap:10px;padding:10px 12px;border-bottom:1px solid var(--border);font-size:13.5px}
.todo:last-child{border-bottom:0}
.todo input[type=checkbox]{width:16px;height:16px;cursor:pointer}
.todo.done span{text-decoration:line-through;color:var(--text-soft)}
.todo .meta{margin-left:auto;font-size:11.5px;color:var(--text-soft)}

/* Responsive */
@media (max-width:880px){
  .sidebar{width:64px}
  .brand-name,.nav-item span:not(.ic),.nav-sep,.sidebar-foot .user,.sidebar-foot .logout{display:none}
  .nav-item{justify-content:center;padding:10px}
  .main{padding:20px}
  .form-grid{grid-template-columns:1fr}
  .kpi-row{grid-template-columns:1fr}
  .kpi-row > div{border-right:0;border-bottom:1px solid var(--border)}
}