:root{--bg: linear-gradient(180deg, #eef2ff 0%, #f8fafc 100%);--card-bg: #ffffff;--muted: #6b7280;--accent: #2563eb;--success: #10b981;--error: #ef4444;--radius: 12px;--glass: rgba(255, 255, 255, .6);--max-width: 720px}*{box-sizing:border-box}html,body{height:100%;margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}body{background:var(--bg);color:#0f172a;display:flex;align-items:center;justify-content:center;padding:32px}main{display:flex;flex-direction:column;width:100%;max-width:var(--max-width);background:var(--card-bg);border-radius:var(--radius);box-shadow:0 8px 30px #02061714;padding:32px}h1{margin:0 0 8px;font-weight:700;font-size:28px;color:#0b1221}p{margin:0}.free,.upgrades{display:flex;flex-direction:column;gap:12px;padding-top:12px;align-self:flex-start}.free>div{display:flex;flex-direction:column;gap:8px}.day-title{font-size:13px;color:var(--muted);letter-spacing:.6px}.day-title~div{display:flex;gap:8px}#current-day{font-size:40px;font-weight:700;color:var(--accent)}.locked-days,.unlocked-days,button.upgrade{padding:10px 14px;border-radius:10px;border:none;font-weight:600}.locked-days{cursor:pointer;background:#c7d2fe;color:#1e293b}.unlocked-days{background:transparent;color:#0f172a;border-radius:0;font-weight:700}.upgrades{margin-top:16px;align-items:center}button.upgrade{background:var(--success);color:#fff;width:100%;max-width:320px}button.upgrade:hover{filter:brightness(.97)}.upgrade-note{font-size:13px;color:var(--muted)}.error{color:var(--error);margin-top:6px}dialog{border:none;padding:20px;border-radius:10px;box-shadow:0 10px 30px #0206171f}dialog::backdrop{background:linear-gradient(180deg,#0206174d,#02061799)}dialog p{margin:0 0 12px;font-weight:600}dialog button{background:var(--accent);color:#fff;padding:8px 12px;border-radius:8px;border:none;cursor:pointer}.hidden{display:none}@media(min-width:900px){main{gap:28px;padding:36px}.upgrades{width:320px}}