:root{--bg:#f6f8fb;--card:#ffffff;--accent:#f8c600;--muted:#6b7280}
*{box-sizing:border-box;font-family:Inter,system-ui,Segoe UI,Roboto,"Helvetica Neue",Arial}
html,body{height:100%;margin:0;background:var(--bg);color:#111}
main.card{max-width:520px;margin:8vh auto;padding:28px;border-radius:10px;background:var(--card);box-shadow:0 8px 24px rgba(16,24,40,0.06)}
h1{font-size:20px;margin:0 0 12px}
label{display:block;margin:12px 0 6px;color:var(--muted);font-size:14px}
input[type=email]{width:100%;padding:10px 12px;border:1px solid #e6e9ef;border-radius:8px}
button{margin-top:14px;padding:10px 14px;background:var(--accent);color:#fff;border:0;border-radius:8px;cursor:pointer}
#msg{margin-top:12px;color:#b91c1c}
p{margin:8px 0;color:var(--muted)}
.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px}
.loading-text{font-size:18px;color:#111;margin-bottom:24px;text-align:center}
.spinner{width:60px;height:60px;border:6px solid #e6e9ef;border-top-color:var(--accent);border-radius:50%;animation:spin 0.8s linear infinite;margin:0 auto}
@keyframes spin{to{transform:rotate(360deg)}}