:root {
  --primary: #073763;
  --primary-hover: #052c50;
  --secondary: #10b981;
  --bg-color: #f3f4f6;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --border-focus: #4f46e5;
  --radius: 12px;
  --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at 100% 0%, #e0e7ff 0%, transparent 25%),
                    radial-gradient(circle at 0% 100%, #dcfce3 0%, transparent 25%);
  background-attachment: fixed;
  color: var(--text-main);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  width: 100%;
  box-sizing: border-box;
}

.brand-header {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeInDown 0.8s ease-out;
}

.brand-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #111827;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem;
  transition: var(--transition);
  animation: fadeInUp 0.8s ease-out;
}

.card:hover {
  box-shadow: var(--shadow-hover);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #111827;
  border-bottom: 2px solid #f3f4f6;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-title:first-of-type {
  margin-top: 0;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
}

input, select, textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background-color: #f9fafb;
  font-size: 1rem;
  color: var(--text-main);
  transition: var(--transition);
  box-sizing: border-box;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: #fff;
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

input[type="file"] {
  padding: 0.5rem;
  background: #fff;
  border: 1px dashed var(--border-focus);
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
  margin-top: 2.5rem;
  box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.4);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.5);
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
}

.btn:disabled {
  background: #9ca3af;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.alert {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-weight: 500;
  animation: fadeIn 0.5s ease-out;
}

.alert-error {
  background-color: #fef2f2;
  color: #ef4444;
  border: 1px solid #fecaca;
}

.alert-success {
  background-color: #ecfdf5;
  color: #10b981;
  border: 1px solid #a7f3d0;
}

.alert-warning {
  background-color: #fffbeb;
  color: #d97706;
  border: 1px solid #fde68a;
}

.success-icon {
  width: 80px;
  height: 80px;
  background: #ecfdf5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: #10b981;
}

.success-icon svg {
  width: 40px;
  height: 40px;
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Stepper Progress Bar */
.stepper {
  display: flex;
  justify-content: space-between;
  margin-bottom: 3rem;
  position: relative;
  padding: 0 1rem;
}

.stepper::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 40px;
  right: 40px;
  height: 2px;
  background: var(--border);
  z-index: 1;
}

.step-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 2;
  flex: 1;
}

.step {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: var(--transition);
  color: var(--text-muted);
}

.step.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 4px rgba(7, 55, 99, 0.2);
}

.step.completed {
  background: var(--secondary);
  border-color: var(--secondary);
  color: #fff;
}

.step-label {
  margin-top: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}

.step.active + .step-label {
  color: var(--primary);
}

.step.completed + .step-label {
  color: var(--secondary);
}

/* Form Steps Visibility */
.form-step {
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.form-step.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Address Fields Helper */
.address-fields-container {
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

/* Responsive */
@media (max-width: 640px) {
  .stepper::before {
    display: none;
  }
  
  .step-label {
    display: none;
  }
  
  .step-wrapper {
    flex: 0;
  }
  
  .stepper {
    justify-content: center;
    gap: 1rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}