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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border-color: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --danger: #f85149;
  --success: #3fb950;
  --warning: #d29922;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

.view {
  min-height: 100vh;
}

/* Auth View */
.auth-container {
  max-width: 400px;
  margin: 0 auto;
  padding: 2rem;
  padding-top: 15vh;
  text-align: center;
}

.auth-container h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--accent);
}

.subtitle {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

#auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input[type="email"],
input[type="password"] {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

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

button {
  padding: 0.75rem 1.5rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.2s;
}

#auth-submit {
  background: var(--accent);
  color: #000;
}

#auth-submit:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

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

.auth-toggle {
  margin-top: 1rem;
  color: var(--text-secondary);
}

.auth-toggle a {
  color: var(--accent);
  text-decoration: none;
}

.auth-toggle a:hover {
  text-decoration: underline;
}

.error {
  color: var(--danger);
  margin-top: 1rem;
  min-height: 1.2em;
}

/* Sessions View */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  font-size: 1.5rem;
  color: var(--accent);
}

header nav {
  display: flex;
  gap: 0.5rem;
}

main {
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.quick-start-banner {
  background: var(--bg-secondary);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
}

.quick-start-label {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.quick-start-command {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.quick-start-command code {
  flex: 1;
  background: var(--bg-primary);
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  word-break: break-all;
  color: var(--success);
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

#sessions-list h2 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.empty-state {
  color: var(--text-secondary);
  text-align: center;
  padding: 3rem;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
}

.session-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color 0.2s;
}

.session-card:hover {
  border-color: var(--accent);
}

.session-info h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.session-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.session-card .btn-connect {
  background: var(--accent);
  color: #000;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.session-card .btn-connect:hover {
  background: var(--accent-hover);
}

/* Terminal View */
.terminal-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#terminal-title {
  flex: 1;
  font-weight: 500;
}

.status-indicator {
  font-size: 0.85rem;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  background: var(--bg-tertiary);
}

.status-indicator.connected {
  color: var(--success);
}

.status-indicator.disconnected {
  color: var(--danger);
}

.status-indicator.connecting {
  color: var(--warning);
}

#terminal-container {
  height: calc(100vh - 60px);
  padding: 4px;
  background: #000;
}

/* Settings Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  max-width: 600px;
  width: 90%;
}

.modal-content h2 {
  margin-bottom: 1.5rem;
}

.setting-group {
  margin-bottom: 1.5rem;
}

.setting-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.token-display {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.token-display code {
  flex: 1;
  background: var(--bg-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  word-break: break-all;
}

.command-display {
  display: block;
  background: var(--bg-primary);
  padding: 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  word-break: break-all;
}

.hint {
  color: var(--text-secondary);
  font-size: 0.8rem;
  margin-top: 0.5rem;
}

.modal-content button {
  margin-top: 0.5rem;
  margin-right: 0.5rem;
}

/* Responsive */
@media (max-width: 600px) {
  header {
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  main {
    padding: 1rem;
  }

  .auth-container {
    padding: 1rem;
    padding-top: 10vh;
  }
}