:root {
  --bg-primary: #070d18;
  --bg-secondary: #0c1424;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-input: #0a1120;
  --border-color: rgba(56, 189, 248, 0.18);
  --border-hover: rgba(56, 189, 248, 0.45);
  --accent-cyan: #38bdf8;
  --accent-blue: #0284c7;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-red: #ef4444;
  --accent-purple: #a855f7;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --font-mono: 'JetBrains Mono', monospace, Consolas;
  --font-sans: 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.08) 0px, transparent 50%);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.hud-header {
  background: rgba(12, 20, 36, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.hud-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-pulse {
  width: 12px;
  height: 12px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.brand-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--text-main);
}

.brand-sub {
  font-size: 11px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  letter-spacing: 1px;
  margin-left: 6px;
}

.hud-nav {
  display: flex;
  gap: 8px;
}

.nav-tab {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 0.5px;
}

.nav-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent-cyan);
}

.hud-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hud-pill {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.role-badge {
  background: var(--accent-blue);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
}

.role-badge.developer { background: var(--accent-purple); }
.role-badge.master { background: var(--accent-amber); }
.role-badge.seller { background: var(--accent-green); }

/* Main Content */
.main-container {
  flex: 1;
  padding: 28px;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
}

.stat-label {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.stat-val {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 6px;
  font-family: var(--font-mono);
}

/* Card & Table */
.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th {
  text-align: left;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 14px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.key-code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-cyan);
  background: rgba(56, 189, 248, 0.08);
  padding: 4px 8px;
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.status-tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.status-tag.active { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid #10b981; }
.status-tag.expired { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid #ef4444; }
.status-tag.pending { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid #f59e0b; }

/* Buttons & Inputs */
.btn {
  background: var(--accent-blue);
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn:hover {
  background: #0369a1;
  box-shadow: 0 0 12px rgba(2, 132, 199, 0.4);
}

.btn-cyan {
  background: var(--accent-cyan);
  color: #070d18;
}

.btn-cyan:hover {
  background: #7dd3fc;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-danger {
  background: var(--accent-red);
}

.btn-danger:hover {
  background: #dc2626;
}

.form-input, .form-select {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 15px;
  width: 100%;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.2);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(7, 13, 24, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 28px;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.modal-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--accent-cyan);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 6px;
}

/* Login Card */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
}