:root {
  --bg-dark: #0b0f19;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(30, 41, 59, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);

  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.15);

  --cyan: #06b6d4;
  --purple: #8b5cf6;
  --emerald: #10b981;
  --rose: #f43f5e;
  --amber: #f59e0b;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

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

body {
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
}

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

/* SIDEBAR */
.sidebar {
  width: 260px;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-color);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--cyan));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.brand-text h2 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.domain-tag {
  font-size: 0.75rem;
  color: var(--cyan);
  font-weight: 500;
}

/* NAV MENU */
.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
  border-color: rgba(99, 102, 241, 0.3);
  font-weight: 600;
}

.sidebar-footer {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.server-status-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-dot.online {
  width: 8px;
  height: 8px;
  background: var(--emerald);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald);
}

.webmail-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

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

/* MAIN CONTENT */
.main-content {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.top-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.page-title h1 {
  font-size: 1.6rem;
  font-weight: 700;
}

.page-title p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.25rem;
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--rose);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.btn-danger:hover {
  background: var(--rose);
  color: white;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

/* METRICS GRID */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.metric-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: var(--transition);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bg-card-hover);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.bg-indigo { background: rgba(99, 102, 241, 0.15); color: var(--primary); }
.bg-emerald { background: rgba(16, 185, 129, 0.15); color: var(--emerald); }
.bg-cyan { background: rgba(6, 182, 212, 0.15); color: var(--cyan); }
.bg-purple { background: rgba(139, 92, 246, 0.15); color: var(--purple); }

.card-data .card-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.card-data h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 0.15rem;
}

/* GLASS PANEL */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.panel-header {
  margin-bottom: 1.25rem;
}

.panel-header h3 {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mt-6 { margin-top: 1.5rem; }
.mb-6 { margin-bottom: 1.5rem; }

/* SERVICES GRID */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.service-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.service-info i {
  font-size: 1.25rem;
}

.service-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.icon-postfix { color: var(--primary); }
.icon-dovecot { color: var(--cyan); }
.icon-dkim { color: var(--emerald); }
.icon-dmarc { color: var(--purple); }

/* BADGES */
.badge {
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--emerald); }
.badge-indigo { background: rgba(99, 102, 241, 0.15); color: var(--primary); }
.badge-purple { background: rgba(139, 92, 246, 0.15); color: var(--purple); }
.badge-cyan { background: rgba(6, 182, 212, 0.15); color: var(--cyan); }

/* TABLES */
.table-container {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th, .data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.88rem;
}

.data-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.action-btns {
  display: flex;
  gap: 0.5rem;
}

/* SEARCH BOX */
.search-box {
  position: relative;
  width: 320px;
}

.search-box i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
}

.search-box input {
  width: 100%;
  padding: 0.55rem 1rem 0.55rem 2.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.85rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
}

/* DNS RECORD BOX */
.dns-record-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  font-family: monospace;
}

.dns-record-box .record-host {
  display: block;
  font-size: 0.82rem;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}

.dns-record-box pre {
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* LOG CONSOLE */
.log-console {
  background: #050811;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  height: 480px;
  overflow-y: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  color: #a7f3d0;
  line-height: 1.5;
}

/* TAB VISIBILITY */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* MODAL OVERLAY */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 440px;
  max-width: 90vw;
  padding: 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

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

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-group input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.88rem;
}

.input-addon-group {
  display: flex;
  align-items: center;
}

.input-addon-group input {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-addon-group .addon {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  border-left: none;
  padding: 0.65rem 0.85rem;
  border-top-right-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--cyan);
}

.input-with-btn {
  display: flex;
  gap: 0.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* TOAST NOTIFICATIONS */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 1000;
}

.toast {
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: white;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
  animation: slideIn 0.3s ease;
}

.toast-success { background: #059669; }
.toast-error { background: #e11d48; }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* AUTHENTICATION & LOGIN SCREEN */
.hidden {
  display: none !important;
}

.login-wrapper {
  min-height: 100vh;
  width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: #090d16;
}

.login-background-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(14, 165, 233, 0.08) 50%, rgba(0, 0, 0, 0) 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  filter: blur(40px);
}

.login-card {
  width: 440px;
  max-width: 90vw;
  padding: 2.5rem 2rem;
  z-index: 10;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-brand-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, #4f46e5, #06b6d4);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: #ffffff;
  box-shadow: 0 10px 20px rgba(79, 70, 229, 0.35);
}

.login-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.login-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.login-alert {
  background: rgba(225, 29, 72, 0.15);
  border: 1px solid rgba(225, 29, 72, 0.4);
  color: #fecdd3;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i:first-child {
  position: absolute;
  left: 1rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.input-with-icon input {
  padding-left: 2.75rem !important;
  padding-right: 2.75rem !important;
}

.btn-toggle-pass {
  position: absolute;
  right: 0.85rem;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.25rem;
  font-size: 0.9rem;
  transition: var(--transition);
}

.btn-toggle-pass:hover {
  color: var(--text-main);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.login-footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1.25rem;
}

.user-profile-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #a5b4fc;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
}

/* ENHANCED MODAL & FORM STYLES */
.modal-lg {
  max-width: 600px;
  width: 92%;
}

.modal-header-custom {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.modal-header-text h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.modal-header-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.form-row {
  display: flex;
  gap: 1rem;
}

.col-6 {
  flex: 1;
}

.required-star {
  color: #ef4444;
  font-weight: bold;
  margin-left: 2px;
}

.domain-input-row {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
}

.col-user-prefix {
  flex: 1;
}

.col-user-domain {
  flex: 1;
}

.at-separator {
  padding-bottom: 0.6rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-dim);
}

.select-wrapper {
  position: relative;
  width: 100%;
}

.select-domain {
  width: 100%;
  padding: 0.65rem 2.25rem 0.65rem 0.85rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.9rem;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.select-domain:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.select-domain option {
  background: #1e293b;
  color: #f8fafc;
}

.select-icon {
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  font-size: 0.8rem;
}

.field-hint {
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* CUSTOM CHECKBOXES */
.checkbox-group {
  margin-top: 0.85rem;
  margin-bottom: 0.85rem;
}

.custom-checkbox {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
  position: relative;
}

.custom-checkbox input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  height: 20px;
  width: 20px;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.custom-checkbox:hover input ~ .checkmark {
  border-color: var(--primary);
}

.custom-checkbox input:checked ~ .checkmark {
  background-color: var(--primary);
  border-color: var(--primary);
}

.checkmark:after {
  content: "";
  display: none;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.custom-checkbox input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-text {
  font-size: 0.88rem;
  color: var(--text-main);
  font-weight: 400;
}

.mt-6 {
  margin-top: 1.5rem;
}