:root {
  --teal-primary: #0F766E;
  --teal-hover: #115E59;
  --teal-pressed: #134E4A;
  --teal-tint: #DFF7F5;
  --teal-tint-light: #F0FDFA;
  --bg: #F8FAFC;
  --bg-secondary: #F1F5F9;
  --panel: #FFFFFF;
  --panel-2: #F8FAFC;
  --text: #0F172A;
  --muted: #64748B;
  --accent: #0F766E;
  --accent-2: #0F766E;
  --danger: #DC2626;
  --warning: #D97706;
  --ok: #16A34A;
  --border: #E2E8F0;
  --border-hover: #CBD5E1;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Inter, system-ui, sans-serif;
  --radius: 12px;
  --radius-sm: 10px;
  --sidebar: 248px;
}

html[data-theme="dark"] {
  --bg: #0F1115;
  --bg-secondary: #171A21;
  --panel: #1E232D;
  --panel-2: #242B36;
  --text: #F8FAFC;
  --muted: #94A3B8;
  --border: #2D3440;
  --border-hover: #3C4554;
  --teal-tint: rgba(15, 118, 110, 0.22);
  --teal-tint-light: rgba(15, 118, 110, 0.12);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; font-weight: 500; }
a:hover { text-decoration: underline; color: var(--teal-hover); }

.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.nav {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 1.25rem 0.9rem;
  display: flex; flex-direction: column; gap: 0.2rem;
  position: sticky; top: 0; height: 100vh;
}
.nav .brand {
  font-weight: 650; font-size: 1.05rem; margin: 0.25rem 0.55rem 1.1rem;
  letter-spacing: -0.02em; color: var(--text);
}
.nav .brand span { color: var(--accent); }
.nav a {
  color: var(--text); padding: 0.55rem 0.75rem; border-radius: var(--radius-sm);
  text-decoration: none; font-size: 0.92rem; font-weight: 500;
}
.nav a.active {
  background: var(--teal-tint); color: var(--teal-primary); text-decoration: none;
}
.nav a:hover:not(.active) { background: var(--bg-secondary); text-decoration: none; }
.nav .spacer { flex: 1; }
.nav .user-chip {
  font-size: 0.78rem; color: var(--muted); padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--border); margin-top: 0.5rem;
}

.main { padding: 1.5rem 1.75rem 2.75rem; max-width: 1280px; }
h1 { margin: 0 0 0.35rem; font-size: 1.5rem; font-weight: 650; letter-spacing: -0.02em; }
h2 { margin: 0 0 0.75rem; font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; }
.page-sub { color: var(--muted); margin: 0 0 1.15rem; font-size: 0.92rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.85rem; margin-bottom: 1.25rem; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.05rem; box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 600; }
.card .value { font-size: 1.35rem; font-weight: 700; margin-top: 0.4rem; letter-spacing: -0.02em; }
.card.warn .value { color: var(--warning); }
.card.danger .value { color: var(--danger); }
.card.ok .value { color: var(--ok); }

.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.05rem 1.15rem; margin-bottom: 1rem; overflow-x: auto; box-shadow: var(--shadow);
}
.panel-head { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; justify-content: space-between; margin-bottom: 0.85rem; }
.panel-head h2 { margin: 0; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.65rem 0.5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th {
  color: var(--muted); font-weight: 600; font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.04em; background: var(--bg-secondary); position: sticky; top: 0;
}
tr:hover td { background: var(--teal-tint-light); }

.badge {
  display: inline-block; padding: 0.18rem 0.55rem; border-radius: 999px;
  font-size: 0.72rem; font-weight: 650; background: var(--bg-secondary); color: var(--muted);
}
.badge.active, .badge.sent, .badge.paid { background: var(--teal-tint); color: var(--teal-primary); }
.badge.suspended, .badge.overdue, .badge.void, .badge.cancelled { background: #FEE2E2; color: #991B1B; }
.badge.draft, .badge.expired, .badge.provisioning, .badge.retired { background: #FEF3C7; color: #92400E; }
.badge.renewal { background: #DBEAFE; color: #1E40AF; }
html[data-theme="dark"] .badge.suspended,
html[data-theme="dark"] .badge.overdue,
html[data-theme="dark"] .badge.void,
html[data-theme="dark"] .badge.cancelled { background: rgba(220,38,38,0.2); color: #FCA5A5; }
html[data-theme="dark"] .badge.draft,
html[data-theme="dark"] .badge.expired { background: rgba(217,119,6,0.22); color: #FCD34D; }

.btn {
  appearance: none; border: 1px solid var(--border-hover); background: var(--panel);
  color: var(--text); border-radius: var(--radius-sm); padding: 0.5rem 0.9rem;
  cursor: pointer; font: inherit; font-weight: 550; min-height: 38px;
}
.btn:hover { background: var(--bg-secondary); border-color: var(--border-hover); }
.btn.primary {
  background: var(--teal-primary); border-color: transparent; color: #fff; font-weight: 650;
}
.btn.primary:hover { background: var(--teal-hover); }
.btn.danger { background: #FEF2F2; border-color: #FECACA; color: var(--danger); }
.btn.danger:hover { background: #FEE2E2; }
html[data-theme="dark"] .btn.danger { background: rgba(220,38,38,0.15); border-color: rgba(220,38,38,0.35); }
.btn.sm { padding: 0.28rem 0.6rem; font-size: 0.82rem; min-height: 30px; }

.row { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; margin: 0.6rem 0; }
.toolbar { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 0 0 1rem; }

input, select, textarea {
  background: var(--panel); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 0.5rem 0.65rem; font: inherit; min-width: 140px;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--teal-primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.2);
}
label { display: flex; flex-direction: column; gap: 0.28rem; font-size: 0.8rem; color: var(--muted); font-weight: 550; }

.login-wrap {
  min-height: 100vh; display: grid; place-items: center; padding: 1rem;
  background:
    radial-gradient(900px 420px at 15% -5%, rgba(15,118,110,0.12), transparent 55%),
    radial-gradient(700px 380px at 90% 100%, rgba(15,118,110,0.08), transparent 50%),
    var(--bg);
}
.login-card {
  width: min(400px, 100%); background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.85rem; box-shadow: var(--shadow);
}
.login-card h1 { margin-bottom: 0.2rem; }
.login-card .sub { color: var(--muted); margin-bottom: 1.25rem; font-size: 0.92rem; }
.login-card form { display: flex; flex-direction: column; gap: 0.85rem; }

.err { color: var(--danger); font-size: 0.9rem; margin-top: 0.5rem; }
.ok { color: var(--ok); font-size: 0.9rem; }
.muted { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.subnav { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0 0 1.15rem; }
.subnav a {
  padding: 0.4rem 0.8rem; border-radius: 999px; background: var(--panel);
  border: 1px solid var(--border); color: var(--text); text-decoration: none;
  font-size: 0.85rem; font-weight: 550;
}
.subnav a.active, .subnav a:hover {
  background: var(--teal-tint); border-color: transparent; color: var(--teal-primary); text-decoration: none;
}

.grid-form { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }
.grid-form .span2 { grid-column: span 2; }
.grid-form textarea { width: 100%; min-width: 0; }

.theme-toggle {
  border: 1px solid var(--border); background: var(--panel-2); color: var(--muted);
  border-radius: var(--radius-sm); padding: 0.35rem 0.65rem; cursor: pointer; font: inherit; font-size: 0.78rem;
}
.theme-toggle:hover { color: var(--text); }

.bar { height: 8px; background: var(--bg-secondary); border-radius: 999px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--teal-primary); border-radius: 999px; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .nav {
    position: static; height: auto; flex-direction: row; flex-wrap: wrap;
    border-right: 0; border-bottom: 1px solid var(--border);
  }
  .nav .spacer, .nav .user-chip { display: none; }
  .grid-form .span2 { grid-column: span 1; }
}