:root {
  --ams-bg: #f4f6f8;
  --ams-sidebar: #1a2332;
  --ams-sidebar-text: #c5ced9;
  --ams-accent: #2f6fed;
  --ams-accent-hover: #2459c4;
  --ams-card: #ffffff;
  --ams-border: #e2e8f0;
  --ams-text: #1e293b;
  --ams-muted: #64748b;
  --ams-success: #15803d;
  --ams-danger: #b91c1c;
  --ams-warning: #b45309;
}

* { box-sizing: border-box; }

body.ams-body {
  margin: 0;
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  background: var(--ams-bg);
  color: var(--ams-text);
  min-height: 100vh;
}

.ams-shell {
  display: flex;
  min-height: 100vh;
}

.ams-sidebar {
  width: 250px;
  background: var(--ams-sidebar);
  color: var(--ams-sidebar-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.ams-brand {
  padding: 1.35rem 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.ams-brand h1 {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #fff;
  line-height: 1.35;
}

.ams-brand span {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: #8b98a8;
}

.ams-nav {
  list-style: none;
  margin: 0;
  padding: 0.75rem 0;
  flex: 1;
}

.ams-nav a {
  display: block;
  padding: 0.65rem 1.25rem;
  color: var(--ams-sidebar-text);
  text-decoration: none;
  font-size: 0.95rem;
  border-left: 3px solid transparent;
}

.ams-nav a:hover,
.ams-nav a.active {
  background: rgba(255,255,255,0.06);
  color: #fff;
  border-left-color: var(--ams-accent);
}

.ams-sidebar-foot {
  padding: 1rem 1.25rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8rem;
  line-height: 1.5;
}

.ams-sidebar-foot a {
  color: #9ec0ff;
  text-decoration: none;
}

.ams-sidebar-foot a:hover { text-decoration: underline; }

.ams-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.ams-topbar {
  background: var(--ams-card);
  border-bottom: 1px solid var(--ams-border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.ams-topbar h2 {
  margin: 0;
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
}

.ams-content {
  padding: 1.5rem;
  flex: 1;
}

.ams-card {
  background: var(--ams-card);
  border: 1px solid var(--ams-border);
  border-radius: 8px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.ams-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.ams-stat {
  background: var(--ams-card);
  border: 1px solid var(--ams-border);
  border-radius: 8px;
  padding: 1rem 1.15rem;
}

.ams-stat .label {
  color: var(--ams-muted);
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.ams-stat .value {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.6rem;
  font-weight: 650;
}

.ams-table-wrap { overflow-x: auto; }

table.ams-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.ams-table th,
table.ams-table td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--ams-border);
  text-align: left;
  vertical-align: middle;
}

table.ams-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--ams-muted);
  font-weight: 600;
  background: #f8fafc;
}

.btn-ams {
  display: inline-block;
  background: var(--ams-accent);
  color: #fff !important;
  border: none;
  border-radius: 6px;
  padding: 0.5rem 0.95rem;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}

.btn-ams:hover { background: var(--ams-accent-hover); }

.btn-ams-secondary {
  background: #e2e8f0;
  color: var(--ams-text) !important;
}

.btn-ams-secondary:hover { background: #cbd5e1; }

.btn-ams-danger { background: var(--ams-danger); }
.btn-ams-danger:hover { background: #991b1b; }

.btn-ams-success { background: var(--ams-success); }
.btn-ams-success:hover { background: #166534; }

.ams-muted { color: var(--ams-muted); }
.ams-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

.badge-status {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: #e2e8f0;
  color: #334155;
}

.badge-active, .badge-sent, .badge-completed { background: #dcfce7; color: #166534; }
.badge-pending, .badge-draft, .badge-scheduled { background: #e0e7ff; color: #3730a3; }
.badge-sending, .badge-processing { background: #fef3c7; color: #92400e; }
.badge-paused { background: #ffedd5; color: #9a3412; }
.badge-failed, .badge-cancelled, .badge-unsubscribed, .badge-bounced { background: #fee2e2; color: #991b1b; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at top left, rgba(47,111,237,0.12), transparent 50%),
    linear-gradient(160deg, #eef2f7, #f8fafc 40%, #e8eef6);
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border: 1px solid var(--ams-border);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

.login-card h1 {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 1.35rem;
  margin: 0 0 0.35rem;
}

.form-label { font-weight: 600; font-size: 0.9rem; }
.form-control, .form-select {
  border-radius: 6px;
  border-color: var(--ams-border);
}

.alert { border-radius: 6px; }

.ams-page-footer {
  padding: 1rem 1.5rem 1.5rem;
  color: var(--ams-muted);
  font-size: 0.85rem;
}

.ams-page-footer a { color: var(--ams-accent); text-decoration: none; }
.ams-page-footer a:hover { text-decoration: underline; }

.var-toolbar { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.5rem; }
.var-toolbar button {
  border: 1px solid var(--ams-border);
  background: #f8fafc;
  border-radius: 4px;
  padding: 0.25rem 0.55rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.preview-frame {
  width: 100%;
  border: 1px solid var(--ams-border);
  border-radius: 6px;
  background: #fff;
  min-height: 420px;
}

.preview-frame.mobile {
  max-width: 375px;
  margin: 0 auto;
  display: block;
}

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
}

@media (max-width: 900px) {
  .ams-shell { flex-direction: column; }
  .ams-sidebar { width: 100%; }
  .ams-nav { display: none; }
  .ams-sidebar.open .ams-nav { display: block; }
  .mobile-nav-toggle { display: inline-block; }
  .ams-brand { display: flex; justify-content: space-between; align-items: center; }
}