:root {
  --primary-color: #25d366;
  --primary-hover: #1ebd5a;
  --bg-color: #f4f6f8;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border-color: #e5e7eb;
  --error-color: #ef4444;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.app-container {
  width: 100%;
  max-width: 480px;
}

.card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.form-group {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
}

input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.btn {
  width: 100%;
  padding: 0.75rem;
  margin-top: 1.25rem;
  border: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

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

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

.btn-secondary {
  background-color: #ef4444;
  color: white;
  width: auto;
  padding: 0.5rem 1rem;
}

.btn-google {
  background-color: #ffffff;
  color: #374151;
  border: 1px solid var(--border-color);
  margin-top: 0.5rem;
}

.btn-link {
  background: none;
  border: none;
  color: #0284c7;
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
}

.divider {
  text-align: center;
  margin: 1rem 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.toggle-text {
  text-align: center;
  margin-top: 1.5rem;
}

.error-banner {
  margin-top: 1rem;
  padding: 0.75rem;
  background-color: #fee2e2;
  color: var(--error-color);
  border-radius: 6px;
  font-size: 0.85rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.dashboard-content {
  margin-top: 1.5rem;
}

.hidden {
  display: none !important;
}

/* Dashboard Specific Styles */
.card-alt {
  background: #f9fafb;
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

.card-alt h3, .clients-list-container h3 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--text-main);
}

textarea {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 1rem;
  resize: vertical;
}

textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

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

.clients-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.clients-table th, .clients-table td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.clients-table th {
  background-color: #f9fafb;
  font-weight: 600;
  color: var(--text-muted);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  margin-top: 0;
  width: auto;
}