@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --primary-green: #00ffa3;
  --dark-bg: #0a0a0a;
  --card-bg: #111;
  --card-border: #222;
  --text-white: #ffffff;
  --text-gray: #a1a1aa;
  --text-muted: #666;
  --accent-green: #00ffa3;
  --accent-orange: #eab308;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;
  --glass-bg: rgba(20, 20, 20, 0.6);
  --radius-card: 12px;
  --radius-btn: 8px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: var(--dark-bg);
  color: var(--text-white);
  min-height: 100vh;
  line-height: 1.6;
}

/* Hero 动态背景（可选，用于主内容区） */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0%,
      rgba(0, 255, 163, 0.03) 2%,
      transparent 4%
    ),
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(26, 77, 62, 0.4) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

body > * { position: relative; z-index: 1; }

/* Cards */
.neu-flat {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  transition: border-color 0.2s;
}

.neu-flat:hover {
  border-color: rgba(0, 255, 163, 0.3);
}

.neu-pressed {
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-btn);
}

.neu-btn {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-btn);
  color: var(--text-gray);
  padding: 10px 20px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.neu-btn:hover:not(:disabled) {
  border-color: var(--primary-green);
  color: var(--primary-green);
}

.neu-btn:active:not(:disabled) {
  background: rgba(0, 255, 163, 0.1);
}

.neu-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  color: var(--text-muted);
}

.neu-btn.primary {
  color: var(--primary-green);
  border-color: rgba(0, 255, 163, 0.4);
}

.neu-btn.primary:hover:not(:disabled) {
  background: rgba(0, 255, 163, 0.1);
  border-color: var(--primary-green);
}

.neu-btn.danger {
  color: var(--accent-red);
  border-color: rgba(239, 68, 68, 0.3);
}

.neu-btn.danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--accent-red);
}

.neu-btn.success {
  color: var(--accent-green);
  border-color: rgba(0, 255, 163, 0.3);
}

.neu-btn.success:hover:not(:disabled) {
  background: rgba(0, 255, 163, 0.1);
  border-color: var(--primary-green);
}

/* Login Page */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  padding: 40px;
}

.login-card h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary-green);
  margin-bottom: 0.5rem;
}

.login-card .subtitle {
  color: var(--text-gray);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-gray);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-btn);
  color: var(--text-white);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-green);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

/* Layout */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}

.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  padding: 20px 25px;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-card);
}

.header-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-green);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-info span { color: var(--text-gray); font-size: 0.9rem; }

.user-info a { color: var(--text-gray); text-decoration: none; }
.user-info a:hover { color: var(--primary-green); }

/* Server List */
.server-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.server-card {
  padding: 25px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.server-card.expanded {
  background: #0d0d0d;
  border-color: rgba(0, 255, 163, 0.25);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  cursor: pointer;
  position: relative;
  z-index: 2;
}

.server-info {
  display: flex;
  gap: 20px;
  flex: 1;
}

.server-icon-box {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  flex-shrink: 0;
  background: rgba(0, 255, 163, 0.1);
}

.server-icon-box svg { width: 24px; height: 24px; }
.server-icon-box .server-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 28px;
  line-height: 1;
}

.server-details-summary { flex: 1; }

.server-id-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.server-id { font-weight: 700; font-size: 1.1rem; color: var(--text-white); }

.server-ip {
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-gray);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 5px;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid var(--card-border);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-running { color: var(--accent-green); }
.status-running .status-dot { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); }

.status-stopped { color: var(--text-muted); }
.status-stopped .status-dot { background: var(--text-muted); }

.status-free { color: var(--text-muted); }
.status-free .status-dot { background: var(--text-muted); }

.status-assigned { color: var(--accent-orange); }
.status-assigned .status-dot { background: var(--accent-orange); }

.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
}

.tag {
  font-size: 0.8rem;
  color: var(--text-gray);
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid var(--card-border);
}

.expand-arrow {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  transition: transform 0.3s ease;
  flex-shrink: 0;
  background: rgba(26, 26, 26, 0.8);
  border: 1px solid var(--card-border);
}

.expand-arrow svg { width: 20px; height: 20px; }

.server-card.expanded .expand-arrow {
  transform: rotate(180deg);
  color: var(--primary-green);
  border-color: rgba(0, 255, 163, 0.3);
}

.card-details {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: all 0.4s ease;
  margin-top: 0;
}

.server-card.expanded .card-details {
  max-height: 1200px;
  opacity: 1;
  margin-top: 25px;
  padding-top: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.detail-section h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.detail-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.95rem;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.detail-item:last-child { border-bottom: none; }
.detail-label { color: var(--text-gray); }
.detail-value { font-weight: 600; color: var(--text-white); }
.main-ip { color: var(--primary-green); }

.actions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 15px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: all;
}

.modal {
  width: 90%;
  max-width: 500px;
  padding: 40px;
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.show .modal {
  transform: scale(1);
}

.modal h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  text-align: center;
  color: var(--text-white);
}

.modal-body, .detail-body {
  margin-bottom: 1.5rem;
  color: var(--text-gray);
  line-height: 1.6;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 1.5rem;
}

.modal-detail .modal { max-width: 520px; }
.detail-body { max-height: 60vh; overflow-y: auto; text-align: left; }

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.5rem;
}

.detail-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.detail-row .detail-label {
  font-size: 0.75rem;
  color: var(--text-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.password-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  padding: 15px;
  margin: 20px 0;
  letter-spacing: 2px;
  color: var(--primary-green);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.5rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-btn);
  color: var(--text-gray);
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.tab.active {
  color: var(--primary-green);
  border-color: rgba(0, 255, 163, 0.4);
}

.tab:hover:not(.active) {
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Cards (admin) */
.card {
  margin-bottom: 1.5rem;
  padding: 25px;
}

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

.card-header h2 { font-size: 1.1rem; font-weight: 600; color: var(--text-white); }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
th {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
tr:hover td { background: rgba(255, 255, 255, 0.03); }
td code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--primary-green);
}

/* Alert */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-btn);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}
.alert-success {
  background: rgba(0, 255, 163, 0.15);
  border: 1px solid rgba(0, 255, 163, 0.3);
  color: var(--primary-green);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-gray);
}

/* Loading */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  color: var(--text-gray);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-left-color: var(--primary-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Reinstall modal */
.reinstall-warn {
  color: var(--accent-red);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  text-align: center;
}

.reinstall-code-hint {
  font-size: 0.9rem;
  color: var(--text-gray);
  margin-bottom: 0.5rem;
}

.reinstall-code-hint strong {
  color: var(--primary-green);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
}

.reinstall-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-btn);
  color: var(--text-white);
  font-size: 1rem;
}

.snapshot-list {
  min-height: 60px;
}

.traffic-result table {
  font-size: 0.9rem;
}
.traffic-result th,
.traffic-result td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-gray);
}
.traffic-result th { color: var(--text-muted); }

/* Main content (admin) */
.main-content {
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-white);
}

/* Responsive */
@media (max-width: 768px) {
  .details-grid { grid-template-columns: 1fr; }
  .server-info { flex-direction: column; gap: 15px; }
  .header-bar { flex-direction: column; gap: 20px; align-items: flex-start; }
  .actions-grid { grid-template-columns: repeat(2, 1fr); }
}