:root {
  /* Elegant & Mystical Palette */
  --color-primary: #8e44ad; /* Royal Purple */
  --color-secondary: #d4af37; /* Metallic Gold */
  --color-boy: #3498db; /* Soft Blue */
  --color-girl: #e91e63; /* Soft Pink */
  --color-bg: #0f0c29; /* Deep Night Sky */
  --color-surface: #1a1635;
  --color-text: #f5f5f5;
  --color-text-dim: #b3b3b3;
  --color-border: rgba(212, 175, 55, 0.3);
  
  --font-serif: "Playfair Display", serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 24px;
}

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

body {
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(142, 68, 173, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.1) 0%, transparent 40%);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  color: var(--color-secondary);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header & Nav */
header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 12, 41, 0.8);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-secondary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links {
  display: flex;
  gap: var(--space-md);
}

.nav-links a {
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--color-secondary);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--space-xl) 0;
  position: relative;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: var(--space-sm);
  animation: fadeInDown 1.2s ease-out;
}

.hero p {
  font-size: 1.25rem;
  color: var(--color-text-dim);
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

/* Form Section */
.predictor-section {
  margin-top: var(--space-xl);
}

.predictor-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  position: relative;
}

.predictor-card::before {
  content: "";
  position: absolute;
  top: -2px; left: -2px; right: -2px; bottom: -2px;
  background: linear-gradient(45deg, var(--color-secondary), transparent, var(--color-primary));
  border-radius: calc(var(--radius-lg) + 2px);
  z-index: -1;
  opacity: 0.3;
}

.grid-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

label {
  color: var(--color-secondary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

input, select {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  color: white;
  font-size: 1rem;
  transition: all 0.3s ease;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--color-secondary);
  background: rgba(255,255,255,0.1);
}

.btn-reveal {
  grid-column: span 2;
  background: var(--color-secondary);
  color: var(--color-bg);
  border: none;
  padding: var(--space-md);
  font-size: 1.2rem;
  font-family: var(--font-serif);
  font-weight: bold;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: transform 0.2s, background 0.3s;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-top: var(--space-sm);
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-reveal:hover {
  transform: translateY(-3px);
  background: #e5c05b;
}

/* Result Section */
.result-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.reveal-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  background: radial-gradient(circle, rgba(142, 68, 173, 0.2) 0%, transparent 70%);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-border);
  padding: var(--space-xl);
  margin-top: var(--space-lg);
  animation: glow 3s infinite alternate;
}

.gender-icon {
  width: 120px;
  height: 120px;
  margin-bottom: var(--space-md);
  color: var(--color-secondary);
}

.gender-text {
  font-size: 4rem;
  font-family: var(--font-serif);
  margin-bottom: var(--space-xs);
}

.gender-text.boy { color: var(--color-boy); text-shadow: 0 0 20px rgba(52, 152, 219, 0.5); }
.gender-text.girl { color: var(--color-girl); text-shadow: 0 0 20px rgba(233, 30, 99, 0.5); }

/* Decorative Elements */
.ornament {
  position: absolute;
  pointer-events: none;
  opacity: 0.2;
}

.ornament-top-left { top: 20px; left: 20px; transform: rotate(0deg); }
.ornament-bottom-right { bottom: 20px; right: 20px; transform: rotate(180deg); }

/* Placeholder Styling */
.placeholder-image {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  font-size: 0.8rem;
  position: relative;
}

.placeholder-image::after {
  content: attr(data-label);
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glow {
  from { box-shadow: 0 0 20px rgba(212, 175, 55, 0.1); }
  to { box-shadow: 0 0 40px rgba(212, 175, 55, 0.3); }
}

@keyframes fall {
  0% { transform: translateY(0) rotate(0deg); opacity: 1; }
  100% { transform: translateY(800px) rotate(720deg); opacity: 0; }
}

/* Confetti */
.confetti-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  z-index: -1;
}

.confetti-piece {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--color-boy);
  top: -20px;
  opacity: 0;
  animation: fall 3s infinite;
}

.confetti-piece.pink { background: var(--color-girl); }

/* Feature Cards & Layout Helpers */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  text-align: center;
}

.feature-card {
  background: rgba(255,255,255,0.03);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.feature-card svg {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-dim);
}

.reveal-desc {
  color: var(--color-text-dim);
  text-align: center;
  max-width: 400px;
  margin-top: var(--space-sm);
}

.btn-small {
  margin-top: var(--space-lg);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
}

.fixed-footer {
  position: absolute;
  bottom: 0;
  width: 100%;
}

.result-section {
  padding-top: var(--space-xl);
  position: relative;
}

/* Responsive */
@media (max-width: 768px) {
  .grid-form {
    grid-template-columns: 1fr;
  }
  .btn-reveal {
    grid-column: span 1;
  }
}

footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-dim);
  font-size: 0.8rem;
}