:root {
  --primary-color: #3D933A;
  --primary-dark: #82B240;
  --accent: #F6B721;
  --bg-light: #f8f9fa;
  --border-light: #dee2e6;
  --text-dark: #1f2937;
  --text-muted: #6b7280;
  --white: #FFFFFF;
  --shadow-light: rgba(61, 147, 58, 0.1);
  --shadow-medium: rgba(61, 147, 58, 0.2);
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  --gradient-bg: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

body {
  background: var(--gradient-bg);
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
}

.main-container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 2rem 1.5rem;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
  position: relative;
}

.main-container::before {
  content:''; 
  position:absolute; 
  top:0; 
  left:0; 
  right:0; 
  height:6px;
  background: var(--gradient-primary); 
  border-radius:20px 20px 0 0;
}

.header-section { 
  text-align:center; 
  margin-bottom: 1.5rem; 
}

.form-title {
  background: var(--gradient-primary);
  -webkit-background-clip: text; 
  -webkit-text-fill-color: transparent;
  background-clip: text; 
  font-weight:700; 
  font-size:1.8rem; 
  margin-bottom:.25rem;
}

.form-subtitle { 
  color: var(--text-muted); 
  font-size: 1rem; 
}

.section-card { 
  border: 1px solid var(--border-light); 
  border-radius: 16px; 
  padding: 1.25rem; 
  margin-bottom: 1rem; 
  background:#fff; 
  box-shadow: 0 2px 4px rgba(0,0,0,0.05); 
}

.section-title { 
  font-weight: 700; 
  color: var(--primary-color); 
  margin-bottom: .75rem; 
  display:flex; 
  align-items:center; 
  gap:.5rem; 
  font-size: 1.1rem; 
}

.summary-card { 
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%); 
  border: 2px solid var(--border-light); 
  border-radius: 16px; 
  padding: 1rem; 
  margin-bottom: 1rem; 
}

.card-form {
  border: 1px solid var(--border-light);
  border-radius: 14px; 
  padding: 1rem; 
  background:#fff;
  transition: all .2s ease; 
  height: 100%; 
  display:flex; 
  flex-direction:column; 
  justify-content:space-between;
}

.card-form:hover { 
  box-shadow: 0 6px 16px rgba(0,0,0,0.08); 
  transform: translateY(-2px); 
}

.card-title { 
  font-weight: 700; 
  color: var(--primary-color); 
  font-size: 1rem; 
}

.card-actions { 
  display:flex; 
  gap:.5rem; 
  align-items:center; 
}

.alert-custom { 
  border-radius: 12px; 
  border: none; 
  padding: 1rem 1.25rem; 
}

.alert-info { 
  background: linear-gradient(135deg, #e3f2fd 0%, #f8f9fa 100%); 
  color: #1976d2; 
}

.btn-google {
  background: #fff;
  border: 2px solid var(--border-light);
  border-radius: 16px;
  padding: .75rem 1.5rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  transition: all .2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  cursor: pointer;
  text-decoration: none;
  color: var(--text-dark);
}

.btn-google:hover {
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(61, 147, 58, 0.15);
  transform: translateY(-1px);
  color: var(--text-dark);
}

.google-icon {
  width: 20px;
  height: 20px;
}

.footer-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: 16px;
  background: var(--gradient-primary);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 15px -3px var(--shadow-medium);
  transition: all 0.3s ease;
}

.footer-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px var(--shadow-medium);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  color: #fff;
  text-decoration: none;
}

.footer-btn i {
  font-size: 1.1rem;
}

.footer-btn.disabled {
  background: var(--gradient-primary);
  color: #fff;
  cursor: default;
}

.spinner-border-sm { 
  width: 1rem; 
  height: 1rem; 
  border-width: 0.15em; 
}

/* Botón personalizado para formularios - mismo estilo que footer-btn */
.btn-form-open {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.5rem;
  border-radius: 16px;
  background: var(--gradient-primary);
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 10px 15px -3px var(--shadow-medium);
  transition: all 0.3s ease;
  border: none;
  font-size: 0.875rem;
}

.btn-form-open:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 25px -5px var(--shadow-medium);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  color: #fff !important;
}

.btn-form-open i {
  font-size: 1rem;
}

/* Responsive */
@media (max-width: 768px) { 
  .main-container { 
    margin: 1rem; 
    padding: 1rem; 
  } 
}