:root {
  --bg: #0f172a;
  --card: #1e293b;
  --card-hover: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --positive: #4ade80;
  --negative: #f87171;
  --accent: #60a5fa;
  --border: #334155;
  --radius: 12px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  padding: 0 16px;
}

#app {
  max-width: 720px;
  margin: 0 auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}

#auth-container {
  display: flex;
  align-items: center;
  gap: 16px;
}

header h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

main {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 20px;
  transition: background 0.15s, transform 0.15s;
}

.card:hover {
  background: var(--card-hover);
  transform: translateY(-2px);
}

.card--wide {
  grid-column: 1 / -1;
}

.card-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.card-value {
  font-size: 1.1rem;
  font-weight: 500;
}

.muted { color: var(--muted); }
.positive { color: var(--positive); }
.negative { color: var(--negative); }
.accent { color: var(--accent); }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s, opacity 0.15s;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  opacity: 0.9;
}

#user-menu {
  position: relative;
}

.user-menu-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--muted);
  padding: 6px 12px;
  font-size: 0.875rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.user-menu-btn:hover {
  color: var(--text);
  border-color: var(--muted);
}

.user-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 140px;
  z-index: 50;
  overflow: hidden;
}

.user-dropdown.visible {
  display: block;
}

.user-dropdown button {
  display: block;
  width: 100%;
  padding: 10px 16px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
}

.user-dropdown button:hover {
  background: var(--card-hover);
}

#unavailable-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.85);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

#unavailable-overlay.visible {
  display: flex;
}

.unavailable-card {
  position: relative;
  background: var(--card);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  max-width: 400px;
  width: 90%;
}

.unavailable-card h2 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.unavailable-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}

.unavailable-close:hover {
  color: var(--text);
}