/* Global Resets & Theme Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-cream);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding: 2rem 1rem;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

/* Base Wrapper */
.app-container {
  width: 100%;
  max-width: 960px;
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.5s ease-out;
}

/* Header Design - Premium & Modern */
.header {
  background: linear-gradient(135deg, var(--sage-main) 0%, var(--sage-dark) 100%);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid rgba(255, 255, 255, 0.05);
}

.header::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.logo-circle {
  width: 68px;
  height: 68px;
  background: var(--bg-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
  transform: scale(1);
  transition: transform var(--transition-smooth);
}

.logo-circle:hover {
  transform: scale(1.05) rotate(5deg);
}

.header-text {
  color: var(--text-white);
  z-index: 1;
}

.header-text h1 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.header-text p {
  font-size: 0.875rem;
  opacity: 0.9;
  margin-top: 0.25rem;
  font-weight: 400;
}

.brand-tag {
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-round);
  padding: 0.25rem 0.75rem;
  margin-top: 0.5rem;
  display: inline-block;
  color: var(--text-white);
  font-weight: 500;
  backdrop-filter: blur(4px);
}

/* Nav tabs / Stepper */
.stepper {
  display: flex;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  overflow-x: auto;
  padding: 0 1rem;
  scrollbar-width: none; /* Firefox */
}

.stepper::-webkit-scrollbar {
  display: none; /* Safari and Chrome */
}

.step {
  flex: 1;
  min-width: 110px;
  padding: 1.25rem 0.5rem;
  text-align: center;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-smooth);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  position: relative;
}

.step.active {
  border-bottom-color: var(--sage-main);
  color: var(--sage-dark);
  font-weight: 700;
}

.step i {
  font-size: 1.35rem;
  transition: transform var(--transition-fast);
}

.step:hover i {
  transform: translateY(-2px);
}

.step.done {
  color: var(--teal-main);
}

.step.done::after {
  content: '✓';
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 9px;
  background-color: var(--teal-main);
  color: white;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Navigation Indicator Bar */
.progress-track {
  height: 6px;
  background-color: var(--sage-light);
  width: 100%;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sage-main), var(--teal-main));
  width: 20%;
  transition: width var(--transition-smooth);
}

/* Main Body Area */
.body-content {
  background-color: var(--bg-white);
  padding: 2.5rem;
  min-height: 480px;
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: slideUp 0.3s ease-out;
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  body {
    padding: 0;
  }
  
  .app-container {
    border-radius: 0;
    border: none;
    box-shadow: none;
  }

  .header {
    padding: 1.5rem 1.25rem;
  }

  .body-content {
    padding: 1.5rem 1.25rem;
  }
}