@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --brand-navy: #0b1f3a;
  --brand-navy-light: #132d52;
  --brand-accent: #00a3e0;
  --brand-accent-hover: #0088bd;
  --brand-accent-glow: rgba(0, 163, 224, 0.15);
  --sidebar-bg: #0b1f3a;
  --sidebar-active: #00a3e0;
  --sidebar-text: #8ba3be;
  --sidebar-text-active: #fff;
  --bg: #f0f4f8;
  --card: #fff;
  --border: #dde4ec;
  --text: #1a2b42;
  --text-muted: #5c6f85;
  --primary: #00a3e0;
  --primary-hover: #0088bd;
  --success: #059669;
  --success-bg: #d1fae5;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(11, 31, 58, 0.06);
  --shadow-lg: 0 8px 30px rgba(11, 31, 58, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

.sidebar {
  width: 260px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  padding: 0;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 1.75rem 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

.sidebar-brand .logo {
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  letter-spacing: -0.02em;
}

.sidebar-brand .logo span { color: var(--brand-accent); }

.sidebar-brand .tagline {
  font-size: .7rem;
  color: var(--sidebar-text);
  margin-top: .25rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.sidebar nav { flex: 1; padding: 1rem 0; }

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem 1.5rem;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: all .15s;
  border-left: 3px solid transparent;
}

.sidebar nav a:hover {
  background: rgba(255,255,255,.04);
  color: #fff;
}

.sidebar nav a.active {
  background: rgba(0, 163, 224, .12);
  color: var(--sidebar-text-active);
  border-left-color: var(--brand-accent);
}

.sidebar nav a .icon { font-size: 1.1rem; width: 1.25rem; text-align: center; }

.sidebar nav a .count {
  margin-left: auto;
  background: rgba(255,255,255,.1);
  padding: .1rem .55rem;
  border-radius: 999px;
  font-size: .7rem;
  font-weight: 600;
}

.sidebar nav a.active .count { background: rgba(0, 163, 224, .3); }

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: .75rem;
  color: var(--sidebar-text);
}

.main { flex: 1; padding: 2rem; overflow-x: auto; }

.page-header {
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-header p {
  color: var(--text-muted);
  font-size: .9rem;
  margin-top: .35rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1.75rem 2rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.card-header h2 { font-size: 1.15rem; font-weight: 600; }

.card-desc {
  color: var(--text-muted);
  font-size: .875rem;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.toolbar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  align-items: center;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 200px;
  max-width: 360px;
}

.search-box input {
  width: 100%;
  padding: .6rem 1rem .6rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .875rem;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--brand-accent-glow);
}

.search-box svg {
  position: absolute;
  left: .85rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

table { width: 100%; border-collapse: collapse; font-size: .875rem; }

th {
  text-align: left;
  padding: .75rem 1rem;
  border-bottom: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

td {
  padding: .9rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:hover td { background: #f8fafc; }

.domain-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.domain-link:hover { text-decoration: underline; }

.badge {
  display: inline-block;
  padding: .2rem .7rem;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-muted { background: #f1f5f9; color: var(--text-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .55rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  font-size: .875rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: all .15s;
}

.btn:hover { background: #f8fafc; border-color: #c5d0db; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-danger { color: var(--danger); border-color: #fecaca; background: #fff; }
.btn-danger:hover { background: var(--danger-bg); }

.btn-sm { padding: .4rem .8rem; font-size: .8rem; }

.btn-icon { padding: .4rem .6rem; }

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: .875rem;
  color: var(--text-muted);
}

.pagination-btns { display: flex; gap: .4rem; }

.pagination-btns button {
  padding: .4rem .75rem;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  font-size: .8rem;
  font-family: inherit;
}

.pagination-btns button:disabled { opacity: .4; cursor: not-allowed; }
.pagination-btns button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Login */
.login-page {
  display: flex;
  min-height: 100vh;
}

.login-left {
  flex: 1;
  background: linear-gradient(135deg, var(--brand-navy) 0%, #0e3a6e 50%, #006494 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.login-left::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 200%;
  background: radial-gradient(circle, rgba(0,163,224,.15) 0%, transparent 70%);
}

.login-left .brand { position: relative; z-index: 1; }

.login-left .brand h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.login-left .brand h1 span { color: var(--brand-accent); }

.login-left .brand p {
  margin-top: 1rem;
  font-size: 1.05rem;
  opacity: .85;
  max-width: 400px;
  line-height: 1.6;
}

.login-left .features {
  margin-top: 3rem;
  position: relative;
  z-index: 1;
}

.login-left .features li {
  list-style: none;
  padding: .5rem 0;
  font-size: .9rem;
  opacity: .8;
  display: flex;
  align-items: center;
  gap: .6rem;
}

.login-left .features li::before {
  content: '✓';
  color: var(--brand-accent);
  font-weight: 700;
}

.login-right {
  width: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: #fff;
}

.login-card { width: 100%; max-width: 360px; }

.login-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .35rem;
}

.login-card .subtitle {
  color: var(--text-muted);
  font-size: .9rem;
  margin-bottom: 2rem;
}

.form-group { margin-bottom: 1.15rem; }

.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: .4rem;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .65rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .9rem;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--brand-accent-glow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.error-msg {
  background: var(--danger-bg);
  color: var(--danger);
  padding: .75rem 1rem;
  border-radius: var(--radius);
  font-size: .85rem;
  margin-bottom: 1rem;
  display: none;
  border: 1px solid #fecaca;
}

.error-msg.visible { display: block; }

.info-banner,
.success-banner {
  padding: .75rem 1rem;
  border-radius: var(--radius);
  font-size: .85rem;
  margin-bottom: 1rem;
  border: 1px solid;
}

.info-banner {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

.success-banner {
  background: var(--success-bg);
  border-color: #86efac;
  color: #166534;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: .85rem;
  color: var(--text-muted);
}

.user-menu .user-name { font-weight: 600; color: var(--text); }

.user-menu .role-badge {
  background: var(--brand-accent-glow);
  color: var(--primary);
  padding: .15rem .5rem;
  border-radius: 4px;
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--brand-navy);
}

.stat-card .stat-label {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .25rem;
  font-weight: 500;
}

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(11, 31, 58, .5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.visible { display: flex; }

.modal {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 { font-size: 1.1rem; font-weight: 600; }

.modal-body { padding: 1.5rem; }

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  max-height: 180px;
  overflow-y: auto;
  padding: .75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  cursor: pointer;
}

/* DNS */
.dns-form {
  display: grid;
  grid-template-columns: 2fr 1fr 2fr 80px 80px auto;
  gap: .5rem;
  align-items: end;
  margin-bottom: 1rem;
  padding: 1.25rem;
  background: #f8fafc;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.dns-form label {
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .03em;
  display: block;
  margin-bottom: .3rem;
}

.dns-form input,
.dns-form select {
  width: 100%;
  padding: .5rem .65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .85rem;
  font-family: inherit;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.back-link:hover { color: var(--primary); }

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-muted);
}

.empty-state .icon { font-size: 2.5rem; margin-bottom: .75rem; opacity: .5; }

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
}

.tabs button {
  padding: .75rem 1.25rem;
  border: none;
  background: none;
  font-size: .875rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-family: inherit;
}

.tabs button.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

@media (max-width: 900px) {
  .login-page { flex-direction: column; }
  .login-left { padding: 2rem; }
  .login-right { width: 100%; }
  .layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .dns-form { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}