:root{
  --brand:#a47864;
  --brand-dark:#8a6553;
  --brand-light:#f3ece8;
  --ink:#1f2933;
  --muted:#616e7c;
  --border:#e2e6ea;
  --bg:#f6f4f2;
  --card:#ffffff;
  --ok:#1e6b3a;
  --ok-bg:#e7f6ec;
  --warn:#8a5a00;
  --warn-bg:#fff4e0;
  --danger:#8a1f11;
  --danger-bg:#fdecea;
  --radius:12px;
  font-size:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Segoe UI",system-ui,Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.5;
}
a{color:var(--brand-dark)}
.wrap{max-width:1100px;margin:0 auto;padding:0 1.25rem}
.narrow{max-width:720px}

/* Topbar */
.topbar{
  background:var(--card);
  border-bottom:1px solid var(--border);
  padding:1rem 0;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:700;font-size:1.15rem;color:var(--ink);text-decoration:none}
.brand i{color:var(--brand)}
.topbar-actions{display:flex;align-items:center;gap:.75rem;font-size:.9rem}
.topbar-actions a{color:var(--muted);text-decoration:none}
.topbar-actions a:hover{color:var(--brand-dark)}

main{padding:2.5rem 0 4rem}

.section-head{text-align:center;max-width:640px;margin:0 auto 2rem}
.section-head h1{font-size:1.8rem;margin:0 0 .5rem}
.section-head p{color:var(--muted);margin:0}

/* Billing toggle */
.billing-toggle{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:2rem;flex-wrap:wrap}
.billing-toggle-label{font-weight:500;color:var(--muted);font-size:.95rem}
.billing-toggle-label.is-active{color:var(--ink)}
.billing-save-badge{background:var(--brand-light);color:var(--brand-dark);font-size:.75rem;padding:.15rem .5rem;border-radius:999px;margin-left:.35rem;font-weight:600}
.billing-switch{border:none;background:none;cursor:pointer;padding:0}
.billing-switch-track{display:block;width:48px;height:26px;background:var(--brand);border-radius:999px;position:relative;transition:background .2s}
.billing-switch-thumb{position:absolute;top:3px;left:3px;width:20px;height:20px;background:#fff;border-radius:50%;transition:left .2s;box-shadow:0 1px 3px rgba(0,0,0,.25)}
.billing-switch[aria-checked="true"] .billing-switch-thumb{left:25px}

/* Pricing / package cards */
.pkg-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.1rem;margin-bottom:2rem}
.pkg-card{
  background:var(--card);border:2px solid var(--border);border-radius:var(--radius);
  padding:1.4rem;cursor:pointer;position:relative;transition:border-color .15s, box-shadow .15s;
}
.pkg-card:hover{border-color:var(--brand)}
.pkg-card.is-selected{border-color:var(--brand);box-shadow:0 6px 20px rgba(164,120,100,.18)}
.pkg-card input{position:absolute;opacity:0;pointer-events:none}
.pkg-name{font-weight:700;font-size:1.1rem;display:block;margin-bottom:.2rem}
.pkg-seats{color:var(--muted);font-size:.85rem;display:block;margin-bottom:.7rem}
.pkg-price{font-size:1.4rem;font-weight:700}
.pkg-price small{font-size:.75rem;font-weight:500;color:var(--muted)}
.pkg-sub{display:block;font-size:.78rem;color:var(--muted);margin-top:.15rem}
.pkg-feature{display:flex;align-items:flex-start;gap:6px;font-size:.78rem;color:var(--muted);margin-top:.4rem}
.pkg-feature i{color:var(--brand);font-size:.72rem;margin-top:2px}
.pkg-feature[data-period]{display:none}
.pkg-grid.is-yearly .pkg-feature[data-period="yearly"]{display:flex}
.pkg-grid:not(.is-yearly) .pkg-feature[data-period="monthly"]{display:flex}
.pkg-badge{position:absolute;top:-11px;right:1rem;background:var(--brand);color:#fff;font-size:.72rem;padding:.2rem .6rem;border-radius:999px;font-weight:600}
.pkg-card.is-locked{opacity:.5;filter:grayscale(.4);cursor:not-allowed;pointer-events:none}
.pkg-lock-note{display:none;font-size:.78rem;font-weight:600;color:var(--brand);margin-top:.4rem}
.pkg-card.is-locked .pkg-lock-note{display:block}

/* Forms */
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.75rem}
fieldset{border:1px solid var(--border);border-radius:10px;padding:1rem 1.1rem 1.2rem;margin:0 0 1.25rem}
legend{font-weight:600;color:var(--brand-dark);padding:0 .4rem;font-size:.95rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{display:block;font-size:.85rem;font-weight:600;margin:.8rem 0 .3rem;color:var(--ink)}
label .req{color:var(--danger)}
input[type=text],input[type=email],input[type=tel],input[type=number],input[type=password],input[type=date],textarea,select{
  width:100%;padding:.65rem .75rem;border:1px solid #cbd2d9;border-radius:8px;font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink);
}
textarea{resize:vertical;min-height:80px}
.hint{font-size:.78rem;color:var(--muted);margin-top:.3rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  border:none;border-radius:8px;padding:.75rem 1.4rem;font-size:.95rem;font-weight:600;
  cursor:pointer;text-decoration:none;transition:background .15s, opacity .15s;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark)}
.btn-ghost{background:var(--brand-light);color:var(--brand-dark)}
.btn-ghost:hover{background:#e9ddd6}
.btn-block{width:100%}
.btn-sm{padding:.4rem .8rem;font-size:.82rem}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:1px solid var(--border);border-radius:8px;
  background:#fff;color:var(--muted);cursor:pointer;transition:color .15s,border-color .15s;
}
.btn-icon:hover{color:var(--brand-dark);border-color:var(--brand)}
.btn-icon.is-copied{color:var(--ok);border-color:var(--ok)}

.alert{padding:.85rem 1rem;border-radius:8px;font-size:.9rem;margin-bottom:1.2rem}
.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #f5c2c0}
.alert-ok{background:var(--ok-bg);color:var(--ok);border:1px solid #b7e4c7}

/* Auth card */
.auth-card{max-width:400px;margin:3rem auto;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:2rem}
.auth-card h1{font-size:1.3rem;margin-top:0;text-align:center}

/* Admin shell */
.admin-shell{display:flex;min-height:100vh}
.admin-sidebar{
  width:220px;flex-shrink:0;background:#211815;color:#f1ece9;padding:1.5rem 1rem;
}
.admin-sidebar .brand{color:#fff;margin-bottom:2rem}
.admin-nav a{display:flex;align-items:center;gap:.6rem;color:#d8cdc8;text-decoration:none;padding:.6rem .75rem;border-radius:8px;font-size:.9rem;margin-bottom:.25rem}
.admin-nav a i{width:18px;text-align:center}
.admin-nav a:hover,.admin-nav a.is-active{background:rgba(255,255,255,.08);color:#fff}
.admin-main{flex:1;padding:1.75rem;min-width:0}
.admin-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;flex-wrap:wrap;gap:.75rem}
.admin-topbar h1{font-size:1.4rem;margin:0}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:2rem}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.3rem}
.stat-card .num{font-size:1.7rem;font-weight:700}
.stat-card .lbl{color:var(--muted);font-size:.82rem}

.panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:1.4rem;margin-bottom:1.5rem}
.panel h2{font-size:1.05rem;margin:0 0 1rem}

.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.88rem}
th,td{text-align:left;padding:.65rem .7rem;border-bottom:1px solid var(--border);white-space:nowrap}
th{color:var(--muted);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.02em}
tr:hover td{background:#faf8f7}

.badge{display:inline-flex;align-items:center;gap:.3rem;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600}
.badge-new{background:#e7eef8;color:#1c4e8a}
.badge-confirmed{background:var(--brand-light);color:var(--brand-dark)}
.badge-invoiced{background:var(--warn-bg);color:var(--warn)}
.badge-paid{background:var(--ok-bg);color:var(--ok)}
.badge-cancelled{background:#eee;color:#777}

.urgency-overdue{border-left:3px solid var(--danger)}
.urgency-soon{border-left:3px solid var(--warn)}

.filters{display:flex;gap:.6rem;margin-bottom:1rem;flex-wrap:wrap}
.filters select{width:auto;padding:.45rem .6rem}

.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:.9rem 1.5rem;font-size:.9rem}
.detail-grid dt{color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.02em;margin-bottom:.15rem}
.detail-grid dd{margin:0;font-weight:500}

.footer-note{text-align:center;color:var(--muted);font-size:.82rem;margin-top:2rem}

@media (max-width:820px){
  .admin-shell{flex-direction:column}
  .admin-sidebar{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1rem}
  .admin-nav{display:flex;gap:.25rem;flex-wrap:wrap}
  .admin-nav a span{display:none}
  .field-row{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .section-head h1{font-size:1.5rem}
  .form-card{padding:1.2rem}
  .auth-card{margin:1.5rem 1rem;padding:1.5rem}
}