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

:root {
  --primary-color: #6B46C1;
  --secondary-color: #9333EA;
  --accent-color: #C084FC;
  --bg-gradient-start: #1E1B4B;
  --bg-gradient-end: #312E81;
  --text-primary: #FFFFFF;
  --text-secondary: #E0E7FF;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-shadow: rgba(0, 0, 0, 0.3);
  --error-color: #EF4444;
  --success-color: #10B981;
}

body {
  font-family: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Glassmorphism containers */
.glass-container {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px var(--glass-shadow);
  padding: 2rem;
  transition: all 0.3s ease;
}

.glass-container:hover {
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

/* Headers */
h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2rem;
}

/* Form elements */
.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

label.required::after {
  content: ' *';
  color: var(--error-color);
  font-weight: bold;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

input::placeholder,
textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 0 3px rgba(192, 132, 252, 0.2);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Radio buttons & checkboxes */
.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.radio-option,
.checkbox-option {
  display: flex;
  align-items: center;
  padding: 0.875rem 1.25rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.radio-option:hover,
.checkbox-option:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-color);
}

.radio-option input[type="radio"],
.checkbox-option input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-right: 0.75rem;
  cursor: pointer;
  accent-color: var(--secondary-color);
}

/* Buttons */
.btn {
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(147, 51, 234, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-color);
}

.btn-danger {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
}

.btn-warning {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* File upload */
.file-upload {
  position: relative;
  display: inline-block;
  width: 100%;
}

.file-upload input[type="file"] {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.file-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 2px dashed var(--glass-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.file-upload-label:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-color);
}

.file-upload-label svg {
  width: 24px;
  height: 24px;
}

/* Sections */
.section {
  margin-bottom: 2rem;
}

.section-header {
  background: rgba(255, 255, 255, 0.05);
  padding: 1.25rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--glass-border);
}

.section-header h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.25rem;
}

.section-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  border: 1px solid;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
  color: #6EE7B7;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #FCA5A5;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
  color: #93C5FD;
}

/* Loading spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Utilities */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
  display: none !important;
}

/* Botón Home flotante */
.home-button {
  position: fixed;
  top: 1.5rem;
  left: 1.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  text-decoration: none;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px var(--glass-shadow);
  color: var(--text-primary);
  transition: all 0.3s ease;
  z-index: 999;
  cursor: pointer;
}

.home-button:hover {
  transform: translateY(-2px) scale(1.05);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
  background: rgba(255, 255, 255, 0.12);
}

.home-button:active {
  transform: translateY(0) scale(0.98);
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 1.875rem;
  }

  .glass-container {
    padding: 1.25rem;
    border-radius: 16px;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    width: 100%;
  }

  .home-button {
    top: 1rem;
    left: 1rem;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }
}