:root{--bg-color:#f4f7f6;--card-bg:#fff;--primary:#2c3e50;--accent:#8e44ad;--text-main:#333;--text-light:#7f8c8d;--border:#e0e0e0}body{background-color:var(--bg-color);color:var(--text-main);justify-content:center;margin:0;padding:20px;font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex}.container{width:100%;max-width:600px}header{text-align:center;margin-bottom:30px}header h1{color:var(--primary);margin:0 0 5px;font-size:2.2rem}header p{color:var(--text-light);margin:0}.card{background:var(--card-bg);border-radius:12px;margin-bottom:20px;padding:30px;box-shadow:0 8px 24px #0000000d}.form-group{flex-direction:column;margin-bottom:20px;display:flex}.time-group{gap:20px;display:flex}.time-group .form-group{flex:1}label{color:var(--primary);margin-bottom:8px;font-size:.9rem;font-weight:600}input{border:1px solid var(--border);border-radius:8px;outline:none;padding:12px;font-size:1rem;transition:border-color .3s}input:focus{border-color:var(--accent)}button{background-color:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:14px;font-size:1.1rem;font-weight:600;transition:background-color .3s,transform .1s}button:hover{background-color:#732d91}button:active{transform:scale(.98)}button:disabled{cursor:not-allowed;background-color:#ccc}.hidden{display:none!important}.loading-container{text-align:center;padding:40px 0}.spinner{border:4px solid #0000001a;border-left-color:var(--accent);border-radius:50%;width:40px;height:40px;margin:0 auto 15px;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.chart-summary{border-left:4px solid var(--accent);white-space:pre-wrap;background:#f8f9fa;border-radius:8px;margin-bottom:20px;padding:15px;font-family:monospace;font-size:.9rem}.reading-content h2,.reading-content h3{color:var(--primary);margin-top:1.5em}.reading-content p{line-height:1.6}