/* Reset & base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  background: #f0f4f8;
  color: #1a202c;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

/* Card container */
.auth-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
  width: 100%;
  max-width: 420px;
  padding: 2rem 2rem 2.5rem;
}

/* Logo / heading */
.auth-logo {
  text-align: center;
  margin-bottom: 1.5rem;
}

.auth-logo h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #2b6cb0;
  letter-spacing: -0.5px;
}

.auth-logo p {
  font-size: 0.9rem;
  color: #718096;
  margin-top: 0.25rem;
}

/* Tabs */
.auth-tabs {
  display: flex;
  border-bottom: 2px solid #e2e8f0;
  margin-bottom: 1.5rem;
}

.auth-tab {
  flex: 1;
  padding: 0.65rem 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: #718096;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
}

.auth-tab:hover {
  color: #2b6cb0;
}

.auth-tab.active {
  color: #2b6cb0;
  border-bottom-color: #2b6cb0;
}

/* Form panels */
.auth-panel {
  display: none;
}

.auth-panel.active {
  display: block;
}

/* Form fields */
.form-group {
  margin-bottom: 1.1rem;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #4a5568;
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1.5px solid #cbd5e0;
  border-radius: 8px;
  font-size: 1rem;
  color: #1a202c;
  background: #f7fafc;
  transition: border-color 0.15s, box-shadow 0.15s;
  -webkit-appearance: none;
}

input:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
  background: #fff;
}

/* Submit button */
.btn-primary {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background: #2b6cb0;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1.5rem;
  transition: background 0.15s;
  min-height: 48px;  /* comfortable tap target */
}

.btn-primary:hover {
  background: #2c5282;
}

.btn-primary:disabled {
  background: #a0aec0;
  cursor: not-allowed;
}

/* Error / info messages */
.form-error {
  display: none;
  background: #fff5f5;
  color: #c53030;
  border: 1px solid #feb2b2;
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.form-error.visible {
  display: block;
}

/* -- Dashboard styles -- */
.dashboard-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.10);
  width: 100%;
  max-width: 480px;
  padding: 2.5rem 2rem;
  text-align: center;
}

.dashboard-card h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #2b6cb0;
  margin-bottom: 0.5rem;
}

.dashboard-card p {
  color: #718096;
  margin-bottom: 1.5rem;
}

.btn-secondary {
  display: inline-block;
  padding: 0.65rem 1.5rem;
  background: #e2e8f0;
  color: #2d3748;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  min-height: 44px;
}

.btn-secondary:hover {
  background: #cbd5e0;
}

/* Responsive tweaks */
@media (max-width: 480px) {
  .auth-card, .dashboard-card {
    padding: 1.5rem 1.25rem 2rem;
    border-radius: 0;
    box-shadow: none;
    min-height: 100vh;
  }

  body {
    align-items: flex-start;
    background: #fff;
  }
}