/* 
  Daily Expense Tracker - Design System
  Theme: Premium Emerald & Dark Mode
*/

:root {
  /* Colors */
  --primary: #10b981;
  --primary-glow: rgba(16, 185, 129, 0.4);
  --primary-dark: #059669;
  --bg-dark: #050505;
  --bg-card: rgba(255, 255, 255, 0.05);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-glass: rgba(255, 255, 255, 0.1);
  --accent-gold: #fbbf24;
  
  /* Fonts */
  --font-main: 'Outfit', sans-serif;
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* Glassmorphism Utility */
.glass {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--primary-glow);
  background: var(--primary-dark);
}

.btn-google {
  background: #000;
  border: 1px solid var(--border-glass);
  color: #fff;
  padding: 0.5rem 1.2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  border-radius: 8px;
}

.btn-google:hover {
  background: #111;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.play-icon {
  width: 32px;
  height: 32px;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--text-main);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: var(--primary);
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
}

header.scrolled {
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-glass);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--primary);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

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

.btn-download {
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
}

/* Hero Section */
.hero {
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  z-index: -1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
}

.hero-text h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-text p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-text .highlight {
  color: var(--primary);
}

.hero-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
  100% { transform: translateY(0px); }
}

/* Stats / Features Grid */
.features {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  padding: 2rem;
  border-radius: 1.5rem;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
}

.feature-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
  font-size: 1.5rem;
}

.feature-card h3 {
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Heatmap Section */
.heatmap-section {
  padding: 4rem 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
}

.heatmap-image img {
  width: 100%;
  border-radius: 1.5rem;
  border: 1px solid var(--border-glass);
}

/* Pricing Section */
.pricing {
  padding: 6rem 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.price-card {
  padding: 3rem 2rem;
  border-radius: 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.price-card.popular {
  border: 2px solid var(--primary);
}

.popular-badge {
  position: absolute;
  top: 1.5rem;
  right: -1.5rem;
  background: var(--primary);
  color: #fff;
  padding: 0.3rem 3rem;
  transform: rotate(45deg);
  font-size: 0.75rem;
  font-weight: 700;
}

.price {
  font-size: 3rem;
  font-weight: 800;
  margin: 1.5rem 0;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.price-features {
  margin: 2rem 0;
  text-align: left;
}

.price-features li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.price-features i {
  color: var(--primary);
}

/* Footer */
footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border-glass);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 968px) {
  .hero-content, .heatmap-section {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-text p {
    margin: 0 auto 2rem;
  }
  
  .nav-links {
    display: none;
  }
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}