:root{--bg-color:#0b0d19;--card-bg:#161930;--accent-color:#7f5af0;--text-main:#fffffe;--text-secondary:#94a1b2}body{background-color:var(--bg-color);color:var(--text-main);justify-content:center;margin:0;padding:2rem 1rem;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex}#app{width:100%;max-width:800px}.dashboard{background:var(--card-bg);border:1px solid #ffffff0d;border-radius:16px;padding:2rem;box-shadow:0 8px 32px #0006}header{text-align:center;margin-bottom:2rem}h1{color:var(--text-main);letter-spacing:-.5px;margin:0 0 .5rem;font-size:2.5rem}.subtitle{color:var(--text-secondary);margin:0}.controls{justify-content:center;gap:1rem;margin-bottom:2rem;display:flex}input[type=date]{background:var(--bg-color);border:2px solid var(--accent-color);color:var(--text-main);border-radius:8px;outline:none;padding:.6rem 1rem;font-size:1rem}.apod-card{flex-direction:column;gap:1.5rem;display:flex}.media-container img,.media-container iframe{object-fit:cover;border-radius:12px;width:100%;max-height:500px;box-shadow:0 4px 20px #0000004d}.content h2{margin:0 0 .75rem;font-size:1.8rem}.date{color:var(--accent-color);margin-bottom:1rem;font-weight:600;display:block}.explanation{color:var(--text-secondary);font-size:1.05rem;line-height:1.6}.loading,.error{text-align:center;color:var(--text-secondary);padding:3rem;font-size:1.2rem}