:root {
  --bg-dark: #07090e;
  --bg-sidebar: #0b0f19;
  --bg-panel: #111726;
  --border-color: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --cyan-primary: #00f0ff;
  --cyan-hover: #00d2e0;
  --green-success: #10b981;
  --red-danger: #ef4444;
  --purple-accent: #a855f7;
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.brand-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #00f0ff 0%, #3b82f6 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 22px;
  color: #000;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.brand-text h2 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.brand-text span {
  font-size: 9px;
  color: var(--cyan-primary);
  font-weight: 700;
  letter-spacing: 1.5px;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-main);
  transition: all 0.2s;
  text-align: left;
}

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

.nav-item.active {
  background: rgba(0, 240, 255, 0.12);
  color: var(--cyan-primary);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.vps-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 10px 12px;
  border-radius: 8px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--green-success);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--green-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.vps-badge strong {
  display: block;
  font-size: 12px;
  font-family: var(--font-mono);
  color: #fff;
}

.vps-badge span {
  font-size: 11px;
  color: var(--text-muted);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: 32px 40px;
  overflow-y: auto;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.header-title h1 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.header-title p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

.header-actions {
  display: flex;
  gap: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  font-family: var(--font-main);
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}

.btn-primary {
  background: var(--cyan-primary);
  color: #000;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
}

.btn-primary:hover {
  background: var(--cyan-hover);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

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

.btn-link {
  background: none;
  color: var(--cyan-primary);
  border: none;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
}

/* Tab Panes */
.tab-pane {
  display: none;
}

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

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.kpi-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.icon-cyan { background: rgba(0, 240, 255, 0.12); color: var(--cyan-primary); }
.icon-green { background: rgba(16, 185, 129, 0.12); color: var(--green-success); }
.icon-blue { background: rgba(59, 130, 246, 0.12); color: #3b82f6; }
.icon-purple { background: rgba(168, 85, 247, 0.12); color: var(--purple-accent); }

.kpi-info {
  display: flex;
  flex-direction: column;
}

.kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-info h2 {
  font-size: 24px;
  font-weight: 800;
  margin: 4px 0 2px 0;
  letter-spacing: -0.5px;
}

.kpi-trend {
  font-size: 11px;
}

.trend-up { color: var(--green-success); }
.trend-neutral { color: var(--text-muted); }

/* Panels and Tables */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th {
  text-align: left;
  padding: 12px 14px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.data-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-sent { background: rgba(16, 185, 129, 0.15); color: var(--green-success); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-failed { background: rgba(239, 68, 68, 0.15); color: var(--red-danger); border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-queued { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--green-success); }

/* Filter Bar */
.filter-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}

.search-box {
  flex: 1;
  display: flex;
  align-items: center;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0 14px;
  gap: 10px;
}

.search-box input {
  width: 100%;
  background: transparent;
  border: none;
  padding: 12px 0;
  color: #fff;
  font-family: var(--font-main);
  outline: none;
}

select {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 16px;
  border-radius: 8px;
  font-family: var(--font-main);
  outline: none;
  cursor: pointer;
}

/* Templates Preview */
.templates-view {
  display: flex;
  gap: 20px;
  min-height: 600px;
}

.templates-nav {
  width: 260px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}

.tmpl-btn {
  padding: 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: 8px;
  text-align: left;
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-main);
  transition: all 0.2s;
}

.tmpl-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.tmpl-btn.active {
  border-color: var(--cyan-primary);
  color: var(--cyan-primary);
  background: rgba(0, 240, 255, 0.08);
}

.template-preview-card {
  flex: 1;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tmpl-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
}

.template-iframe {
  flex: 1;
  width: 100%;
  min-height: 550px;
  border: none;
  background: #fff;
}

/* Compose Grid */
.compose-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.form-group input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  padding: 12px 14px;
  border-radius: 8px;
  color: #fff;
  font-family: var(--font-main);
  font-size: 14px;
  outline: none;
}

.form-group input:focus {
  border-color: var(--cyan-primary);
}

.btn-block {
  width: 100%;
  justify-content: center;
  padding: 14px;
}

.code-block {
  background: #050811;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: #a5f3fc;
  overflow-x: auto;
  margin-top: 14px;
}

.alert-box {
  margin-top: 16px;
  padding: 14px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.5;
}

.alert-success { background: rgba(16, 185, 129, 0.15); border: 1px solid var(--green-success); color: #34d399; }
.alert-error { background: rgba(239, 68, 68, 0.15); border: 1px solid var(--red-danger); color: #f87171; }

/* DNS Grid */
.dns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.dns-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dns-card h4 {
  font-size: 16px;
  font-weight: 700;
}

.dns-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.dns-card code {
  font-family: var(--font-mono);
  color: var(--cyan-primary);
  font-size: 12px;
  word-break: break-all;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 18px;
}

.modal-header p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  flex: 1;
  min-height: 500px;
  background: #fff;
}

.modal-body iframe {
  width: 100%;
  height: 500px;
  border: none;
}