:root{--bg:#fff;--text:#000;--background-white:#fff;--background-light-gray:#f0f0f0;--border-medium:#e0e0e0;--text-primary:#333;--text-secondary:#666;--card-bg:#fff;--color-brand:#007bff;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}.dark{--bg:#121212;--text:#fff;--background-white:#1f1f1f;--border-medium:#333;--text-primary:#eee;--text-secondary:#bbb;--card-bg:#222;--background-light-gray:#333}body{font-family:var(--font);max-height:100vh;margin:0;padding:0}.app-container{background-color:var(--bg);color:var(--text);padding:20px;transition:background .3s,color .3s}header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.gleam-large{object-fit:contain;border-radius:12px;width:300px;height:300px;margin:40px auto;display:block}.download-btn{color:inherit;border:1px solid;border-radius:8px;justify-content:center;align-items:center;gap:8px;margin-top:20px;padding:12px;font-weight:500;text-decoration:none;display:flex}.date-picker-wrapper{width:100%;margin-top:10px;position:relative}.date-picker-input-wrap{background:var(--background-white);border:1px solid var(--border-medium);border-radius:12px;align-items:center;display:flex}.date-picker-input{color:var(--text-primary);font-size:14px;font-family:var(--font);background:0 0;border:none;flex:1;padding:12px 14px}.date-picker-input:focus{outline:none}.date-picker-icon-btn{cursor:pointer;width:44px;height:44px;color:var(--text-secondary);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;display:flex}.date-picker-popup{background:var(--card-bg);border:1px solid var(--border-medium);z-index:100;border-radius:12px;width:280px;padding:16px;position:absolute;top:calc(100% + 8px);right:0;box-shadow:0 4px 20px #0003}.dp-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.dp-header button{cursor:pointer;color:var(--text-primary);background:0 0;border:none;padding:4px 8px;font-size:18px}.dp-header span{color:var(--text-primary);font-weight:600}.dp-weekdays{text-align:center;color:var(--text-secondary);grid-template-columns:repeat(7,1fr);margin-bottom:8px;font-size:12px;font-weight:600;display:grid}.dp-days{grid-template-columns:repeat(7,1fr);gap:4px;display:grid}.dp-day{cursor:pointer;color:var(--text-primary);text-align:center;background:0 0;border:none;border-radius:8px;padding:8px;font-size:13px;transition:background .1s}.dp-day:hover{background:var(--background-light-gray)}.dp-day.selected{background:var(--color-brand);color:#fff}.dp-empty-day{visibility:hidden}