/* Canvas Buddy - Editorial Study Buddy Design */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,600;0,9..144,900;1,9..144,600&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,400&display=swap');

:root {
  /* Colors - Warm Study Vibe */
  --coral: #FF6B6B;
  --sunset: #FFA94D;
  --teal: #06B6D4;
  --deep-teal: #0E7490;
  --midnight: #1E293B;
  --cream: #FFF8F0;
  --soft-gray: #F1F5F9;
  --ink: #0F172A;
  
  /* Typography */
  --font-display: 'Fraunces', serif;
  --font-body: 'DM Sans', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  
  /* Effects */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-bold: 0 8px 40px rgba(0, 0, 0, 0.15);
  --grain: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="n"><feTurbulence baseFrequency="0.9" numOctaves="4"/></filter><rect width="200" height="200" filter="url(%23n)" opacity="0.05"/></svg>');
}

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

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--cream);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography System */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  font-variation-settings: 'opsz' 144;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  margin-bottom: var(--space-md);
  color: var(--midnight);
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
  color: var(--midnight);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--deep-teal);
}

p {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--midnight);
  opacity: 0.85;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  position: relative;
  display: grid;
  place-items: center;
  padding: var(--space-lg) var(--space-md);
  background: 
    linear-gradient(135deg, var(--cream) 0%, var(--soft-gray) 100%),
    var(--grain);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, var(--sunset) 0%, transparent 70%);
  opacity: 0.15;
  filter: blur(80px);
  animation: float 20s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 50%;
  height: 50%;
  background: radial-gradient(circle, var(--teal) 0%, transparent 70%);
  opacity: 0.2;
  filter: blur(60px);
  animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.1); }
}

.hero-content {
  max-width: 1200px;
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--teal);
  color: white;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 50px;
  margin-bottom: var(--space-md);
  animation: slideDown 0.6s ease-out;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

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

.hero h1 {
  animation: slideUp 0.8s ease-out 0.2s both;
  background: linear-gradient(135deg, var(--midnight) 0%, var(--deep-teal) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero p {
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  font-size: 1.25rem;
  animation: fadeIn 1s ease-out 0.4s both;
}

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

.cta-group {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeIn 1s ease-out 0.6s both;
}

.btn {
  padding: 1rem 2.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--coral) 0%, var(--sunset) 100%);
  color: white;
  box-shadow: 0 4px 20px rgba(255, 107, 107, 0.4);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 107, 107, 0.5);
}

.btn-secondary {
  background: white;
  color: var(--midnight);
  border: 2px solid var(--teal);
  box-shadow: var(--shadow-soft);
}

.btn-secondary:hover {
  background: var(--teal);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-bold);
}

/* Feature Section */
.features {
  padding: var(--space-xl) var(--space-md);
  background: white;
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(180deg, var(--cream) 0%, white 100%);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-lg);
}

.section-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--soft-gray);
  color: var(--deep-teal);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: 50px;
  margin-bottom: var(--space-sm);
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--soft-gray);
  padding: var(--space-lg);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--coral), var(--sunset), var(--teal));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  transform: translateY(-8px) rotate(0.5deg);
  box-shadow: var(--shadow-bold);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--deep-teal) 100%);
  border-radius: 20px;
  display: grid;
  place-items: center;
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
  transform: rotate(-5deg);
  transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: rotate(0deg) scale(1.1);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 1rem;
}

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

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

/* Staggered animation */
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

/* Footer */
footer {
  background: var(--midnight);
  color: white;
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

footer p {
  color: white;
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: var(--space-md);
  }
  
  .cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}