:root {
  --bg-primary: #0e1015;
  --bg-surface: #16181f;
  --bg-surface-elevated: #20242e;
  --bg-surface-subtle: #2a2f3c;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(1, 112, 23, 0.45);
  
  /* Primary Green Palette */
  --accent: #017017;
  --accent-hover: #01881c;
  --accent-active: #015c13;
  --accent-light: #22c55e;
  --accent-glow: rgba(1, 112, 23, 0.35);

  /* Status & Alerts */
  --success: #10b981;
  --danger: #ef4444;

  /* Typography */
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Google Sans Flex", Inter, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "JetBrains Mono", monospace;
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(1, 112, 23, 0.14) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(1, 112, 23, 0.07) 0%, transparent 40%);
  background-attachment: fixed;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  border-bottom: 1px solid var(--border-color);
  background: rgba(22, 24, 31, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(1, 112, 23, 0.18);
  border: 1px solid rgba(1, 112, 23, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-highlight {
  color: var(--accent-light);
}

.auth-nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Hero Section */
.hero {
  padding: 48px 0 32px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.6fr 1fr;
  }
}

/* Card Styles */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.card-highlight {
  border-color: var(--border-highlight);
  box-shadow: 0 0 35px var(--accent-glow);
}

.card-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Status Indicator */
.status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge-online {
  background: rgba(1, 112, 23, 0.22);
  color: #4ade80;
  border: 1px solid rgba(1, 112, 23, 0.5);
}

.badge-offline {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.server-motd {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.server-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.meta-item strong {
  color: var(--text-main);
}

/* Address Box */
.address-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.address-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.address-value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
}

.address-port-pill {
  color: var(--accent-light);
  font-weight: 700;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 2px 8px rgba(1, 112, 23, 0.3);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(1, 112, 23, 0.45);
}

.btn-primary:active {
  background: var(--accent-active);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-surface-subtle);
  border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

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

/* Instruction Steps */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--accent-light);
  font-weight: 700;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-text strong {
  color: var(--accent-light);
}

/* Sections */
.section {
  padding: 24px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .section-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Allowlist items */
.player-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.player-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.player-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.player-avatar {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  background: #252830;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.player-name {
  font-weight: 600;
}

.player-status-tag {
  font-size: 0.75rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}

.player-status-tag.registered {
  background: rgba(1, 112, 23, 0.22);
  color: #4ade80;
  border: 1px solid rgba(1, 112, 23, 0.35);
}

/* Backups Table */
.backup-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.9rem;
}

.backup-table th {
  text-align: left;
  padding: 10px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

.backup-table td {
  padding: 12px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

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

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 420px;
  width: 100%;
  padding: 28px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.3rem;
  cursor: pointer;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

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

.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-muted);
}

.form-input {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-input:focus {
  border-color: var(--accent-light);
}

.modal-alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 16px;
  display: none;
}

.modal-alert.error {
  display: block;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.modal-alert.success {
  display: block;
  background: rgba(1, 112, 23, 0.2);
  border: 1px solid rgba(1, 112, 23, 0.4);
  color: #4ade80;
}

.checkbox-group {
  margin-top: 8px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
  border-radius: 4px;
}

.checkbox-label:hover {
  color: var(--text-main);
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 32px 0;
  margin-top: 48px;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}