:root {
  --bg: #0e0e10;
  --text: #000000;
  --muted: #000000;
  --card: #1a1a1d;
  --blue: rgb(67, 66, 65);
  --blue-dk:  #1f2937; 
  --gray: #374151;    
  --gray-dk: #1f2937;  
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: 
    linear-gradient(rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.55)), 
    url("film_art.jpeg") no-repeat center center fixed;                          
  background-size: cover;  
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif, 
               Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol;
  line-height: 1.0;
}

.wrap {
  max-width: 960px;
  margin: 32px auto 64px;
  padding: 0 16px;
  
}

h1 {
  text-align: center;
  margin: 0 0 8px;
  font-size: 30px;
  font-weight: 900;
}

.note {
  margin: 0 0 16px;
  color: var(--muted);
font-weight: 700; 
  font-size: 20px;
}
p {
  font-size: 20px;           
  font-weight: 600;          
  text-align: left;        
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3); 
  margin: 4px 0;
}

/* p5 frame */
canvas {
  display: block;
  max-width: 100%;
  height: auto !important;
  border-radius: 8px;
  background: var(--card);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  margin: 12px 0 0;
}

/* buttons side-by-side */
.button-row {                
  display: flex;            
  justify-content: center; 
  align-items: center;      
  gap: 12px;                 
  margin-top: 20px;          
  flex-wrap: wrap;           
}

/* primary button */
.sheet-btn {
  display: inline-block;
  background-color: var(--blue);
  color: white;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 8px;
  transition: background-color 0.25s, transform 0.06s;
}

.sheet-btn:hover {
  background-color: var(--blue-dk);
}

.sheet-btn:active {         
  background-color: var(--gray-dk);  
  transform: translateY();
}

/* secondary button */
.sheet-btn.secondary {       
  --blue-dk: #2563eb;
  background-color: var();     
}
.sheet-btn.secondary:hover {  
  background-color: var(--gray-dk);  
}

/* Small screens */
@media (max-width: 520px) {
  .wrap { margin-top: 20px; }
  h1 { font-size: 1.25rem; }
}