@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@600;700&display=swap');
@import 'variables.css';
@import 'animations.css';

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* Container */
.app-container {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: var(--bg-color);
  box-shadow: 0 0 20px rgba(0,0,0,0.05);
}

/* Layout */
.page {
  display: none;
  flex: 1;
  padding: var(--spacing-lg) var(--spacing-md);
  padding-bottom: 80px; /* Space for bottom nav */
  animation: slideUp 0.3s ease-out;
}

.page.active {
  display: block;
}

.page-flex {
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  height: 100vh;
  padding-bottom: 0;
}

.page-flex.active {
  display: flex;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
  backdrop-filter: blur(5px);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-pill);
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  min-height: var(--touch-target);
  transition: all 0.2s ease;
  user-select: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: var(--shadow-primary);
}

.btn-primary:active {
  transform: scale(0.95);
  box-shadow: 0 4px 8px rgba(255, 107, 107, 0.3);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
}

.btn-icon {
  width: var(--touch-target);
  height: var(--touch-target);
  border-radius: 50%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background-color: var(--surface-color);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Cards */
.card {
  background-color: var(--surface-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Emojis */
.emoji-large {
  font-size: 4rem;
  line-height: 1;
  display: inline-block;
}

.emoji-huge {
  font-size: 6rem;
  line-height: 1;
  display: inline-block;
}

/* Navigation Bar */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--surface-color);
  display: flex;
  justify-content: space-around;
  padding: var(--spacing-sm) 0;
  padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom));
  box-shadow: 0 -4px 16px rgba(0,0,0,0.05);
  z-index: var(--z-nav);
  border-top-left-radius: var(--border-radius-lg);
  border-top-right-radius: var(--border-radius-lg);
}

@media (min-width: 600px) {
  .bottom-nav {
    max-width: 600px;
    margin: 0 auto;
  }
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  transition: all 0.2s ease;
}

.nav-item .icon {
  font-size: 1.5rem;
  margin-bottom: 2px;
}

.nav-item.active {
  color: var(--primary-color);
}

.nav-item.active .icon {
  transform: translateY(-4px);
}

/* Top Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  z-index: var(--z-nav);
}

[data-theme="dark"] .top-bar {
  background-color: rgba(30, 30, 30, 0.9);
}

.user-stats {
  display: flex;
  gap: var(--spacing-sm);
}

.stat-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  background-color: var(--surface-color);
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.stat-xp { color: var(--secondary-color); }
.stat-coins { color: var(--tertiary-color); }

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-md); }
.w-100 { width: 100%; }

/* Branding */
.brand-wordmark {
  font-family: 'Fredoka', 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--primary-color);
  letter-spacing: -0.5px;
}

.welcome-banner {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  position: relative;
  overflow: hidden;
}
.welcome-banner h2 {
  color: white;
  margin-bottom: 4px;
}
.welcome-banner p {
  color: rgba(255,255,255,0.9);
  margin: 0;
}
.welcome-banner::after {
  content: '🚀';
  position: absolute;
  right: -20px;
  bottom: -30px;
  font-size: 8rem;
  opacity: 0.15;
  transform: rotate(-15deg);
}

.splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--bg-color);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}