:root {
  --bg:        #0f172a;
  --surface:   #1e293b;
  --border:    #334155;
  --text:      #f1f5f9;
  --muted:     #94a3b8;
  --accent:    #3b82f6;
  --accent-h:  #2563eb;
  --success:   #10b981;
  --warn:      #f59e0b;
  --danger:    #ef4444;
  --sidebar-w: 220px;
  --radius:    6px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ── Layout ── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 18px;
  border-bottom: 1px solid var(--border);
}
.logo-icon { font-size: 20px; }
.logo-text { font-size: 16px; font-weight: 700; letter-spacing: -0.3px; }

.sidebar-nav { padding: 12px 0; flex: 1; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
  font-weight: 500;
}
.nav-item:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-item.active { color: var(--text); background: rgba(59,130,246,.12); border-left: 2px solid var(--accent); }
.nav-icon { font-size: 13px; opacity: .7; }

.sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-username { color: var(--muted); font-size: 13px; }
.logout-link { color: var(--muted); font-size: 12px; text-decoration: none; }
.logout-link:hover { color: var(--danger); }

.content {
  margin-left: var(--sidebar-w);
  padding: 32px 36px;
  flex: 1;
  max-width: 1100px;
}

/* ── Auth ── */
.auth-main {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 360px;
}
.login-logo { text-align: center; margin-bottom: 28px; }
.logo-icon-lg { font-size: 36px; display: block; margin-bottom: 8px; }
.login-title { font-size: 22px; font-weight: 700; }
.login-subtitle { color: var(--muted); font-size: 13px; margin-top: 4px; }

.login-form { display: flex; flex-direction: column; gap: 16px; }

/* ── Page header ── */
.page-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.page-title { font-size: 20px; font-weight: 700; }
.page-subtitle { color: var(--muted); font-size: 13px; }
.page-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }

/* ── Flash messages ── */
.flash {
  padding: 10px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 13px;
}
.flash-success { background: rgba(16,185,129,.15); border: 1px solid rgba(16,185,129,.3); color: #6ee7b7; }
.flash-error   { background: rgba(239,68,68,.15);  border: 1px solid rgba(239,68,68,.3);  color: #fca5a5; }
.flash-warning { background: rgba(245,158,11,.15); border: 1px solid rgba(245,158,11,.3); color: #fcd34d; }
.flash-info    { background: rgba(59,130,246,.15); border: 1px solid rgba(59,130,246,.3); color: #93c5fd; }

/* ── Stat grid ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-card-warn { border-color: rgba(245,158,11,.3); }
.stat-value { font-size: 32px; font-weight: 700; line-height: 1; }
.stat-label { color: var(--muted); font-size: 12px; margin-top: 6px; text-transform: uppercase; letter-spacing: .5px; }

/* ── Section ── */
.section { margin-bottom: 32px; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.section-header h3 { font-size: 15px; font-weight: 600; }

/* ── Card ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.card-title { font-size: 14px; font-weight: 600; margin-bottom: 12px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table thead { background: rgba(255,255,255,.03); }
.data-table th {
  text-align: left;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 1px solid var(--border);
}
.data-table td { padding: 10px 14px; border-bottom: 1px solid rgba(51,65,85,.5); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,.02); }
.row-inactive td { opacity: .5; }

/* ── Forms ── */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 500; color: var(--muted); }
.input-text, .field input, .field select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
  width: 100%;
}
.input-text, .inline-form input { width: auto; min-width: 280px; }
.input-text:focus, .field input:focus { border-color: var(--accent); }

.inline-form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { background: rgba(255,255,255,.06); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); border-color: var(--accent-h); }
.btn-accent { background: rgba(59,130,246,.15); border-color: rgba(59,130,246,.4); color: #93c5fd; }
.btn-accent:hover { background: rgba(59,130,246,.25); }
.btn-danger { background: rgba(239,68,68,.1); border-color: rgba(239,68,68,.3); color: #fca5a5; }
.btn-danger:hover { background: rgba(239,68,68,.2); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3px;
}
.badge-sent    { background: rgba(16,185,129,.15);  color: #6ee7b7; }
.badge-failed  { background: rgba(239,68,68,.15);   color: #fca5a5; }
.badge-queued  { background: rgba(245,158,11,.15);  color: #fcd34d; }
.badge-warn    { background: rgba(245,158,11,.15);  color: #fcd34d; }

/* ── DNS records ── */
.verification-status { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.check-item { font-size: 13px; font-weight: 600; padding: 4px 10px; border-radius: 99px; }
.check-ok   { background: rgba(16,185,129,.15); color: #6ee7b7; }
.check-fail { background: rgba(239,68,68,.15);  color: #fca5a5; }

.dns-record {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
}
.dns-record-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.dns-type { background: rgba(59,130,246,.15); color: #93c5fd; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 4px; letter-spacing: .5px; }
.dns-purpose { color: var(--muted); font-size: 13px; }
.dns-row { display: flex; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.dns-field { color: var(--muted); font-size: 12px; width: 50px; flex-shrink: 0; padding-top: 2px; }
.dns-value {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
  font-family: 'Courier New', monospace;
  word-break: break-all;
  flex: 1;
  cursor: pointer;
  transition: background .15s;
}
.dns-value:hover { border-color: var(--accent); }
.dns-note { color: var(--muted); font-size: 12px; margin-top: 8px; }
.dns-note code { background: rgba(255,255,255,.07); padding: 1px 5px; border-radius: 3px; font-size: 11px; }
.hint { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

/* ── Code blocks ── */
.code-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-label {
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid var(--border);
  padding: 8px 14px;
  font-size: 11px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: .5px;
  text-transform: uppercase;
}
.code-block pre {
  padding: 14px;
  font-size: 12px;
  font-family: 'Courier New', monospace;
  overflow-x: auto;
  color: #cbd5e1;
  white-space: pre;
}

/* ── Misc ── */
.mono { font-family: 'Courier New', monospace; font-size: 12px; }
.muted { color: var(--muted); }
.link-sm { color: var(--accent); font-size: 13px; text-decoration: none; }
.link-sm:hover { text-decoration: underline; }
.empty-state { color: var(--muted); padding: 40px 0; text-align: center; }
.action-cell { display: flex; gap: 6px; flex-wrap: wrap; }

.pagination {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  justify-content: center;
}

.new-key-banner {
  background: rgba(16,185,129,.1);
  border: 1px solid rgba(16,185,129,.3);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.new-key-value {
  font-family: 'Courier New', monospace;
  font-size: 13px;
  background: rgba(0,0,0,.3);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  word-break: break-all;
  color: #6ee7b7;
  border: 1px solid rgba(16,185,129,.3);
}
.copyable:active { opacity: .7; }

/* ── Textarea ── */
.input-textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 12px;
  font-size: 13px;
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  outline: none;
  width: 100%;
  resize: vertical;
  transition: border-color .15s;
}
.input-textarea:focus { border-color: var(--accent); }
.body-textarea { font-size: 14px; min-height: 200px; }

/* ── Select ── */
.input-select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 8px 12px;
  font-size: 14px;
  outline: none;
  width: 100%;
  transition: border-color .15s;
  cursor: pointer;
}
.input-select:focus { border-color: var(--accent); }

/* ── Compose ── */
.compose-card { max-width: 760px; }
.compose-card .field { margin-bottom: 16px; }
.compose-card label { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 6px; display: block; }
.compose-actions { display: flex; align-items: center; gap: 16px; margin-top: 8px; }
.btn-send { padding: 10px 24px; font-size: 14px; }
.btn-send:disabled { opacity: .5; cursor: not-allowed; }
.recipient-count { font-size: 12px; }

/* ── List pills ── */
.list-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 4px; align-items: center; }
.pill-label { cursor: pointer; }
.pill-check { display: none; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  transition: background .15s, border-color .15s, color .15s;
  user-select: none;
}
.pill-count { font-size: 11px; opacity: .7; }
.pill-check:checked + .pill {
  background: rgba(59,130,246,.15);
  border-color: rgba(59,130,246,.5);
  color: #93c5fd;
}
.pill-label:hover .pill { border-color: var(--accent); color: var(--text); }

/* ── Back link ── */
.back-link {
  color: var(--muted);
  font-size: 12px;
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
}
.back-link:hover { color: var(--text); }

/* ── Header actions ── */
.header-actions { margin-left: auto; }

/* ── Form grid ── */
.form-grid { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.form-grid .field { flex: 1; min-width: 200px; }
.form-grid .field-action { flex: 0 0 auto; }

/* ── Link ── */
.link { color: var(--accent); text-decoration: none; }
.link:hover { text-decoration: underline; }

/* ── Badges ── */
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11px; font-weight: 600; }
.badge-green { background: rgba(16,185,129,.15); color: #34d399; }
.badge-blue  { background: rgba(59,130,246,.15);  color: #93c5fd; }
.badge-red   { background: rgba(239,68,68,.15);   color: #fca5a5; }
.badge-ok    { background: rgba(16,185,129,.15);  color: #6ee7b7; }
.badge-err   { background: rgba(239,68,68,.15);   color: #fca5a5; }

/* ── Actions cell ── */
.actions-cell { white-space: nowrap; }
.actions-cell form { display: inline; }

/* ── Card hint ── */
.card-hint { font-size: 13px; color: var(--muted); line-height: 1.5; }

/* ── btn-warning / btn-secondary ── */
.btn-warning   { background: var(--warn);    color: #000; }
.btn-warning:hover { background: #d97706; }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

/* ── Sender status banner ── */
.status-banner {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 1.25rem;
  border: 1px solid transparent;
}
.status-banner-open {
  background: rgba(16,185,129,.1);
  border-color: rgba(16,185,129,.3);
  color: #34d399;
}
.status-banner-restricted {
  background: rgba(239,68,68,.1);
  border-color: rgba(239,68,68,.3);
  color: #fca5a5;
}

/* ── Link tracking ── */
.url-cell { font-family: 'Courier New', monospace; font-size: 11px; word-break: break-all; }

/* ── Rate limit inline form ── */
.rate-limit-form { display: flex; align-items: center; gap: 4px; }
.rate-limit-input { width: 4.5rem; padding: 3px 6px; font-size: 12px; }
.rate-limit-select { padding: 3px 4px; font-size: 12px; }