@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg-color:#050505;--text-primary:#fff;--text-secondary:#a0a0a0;--accent-color:#fff;--input-bg:#1a1a1a;--input-border:#333;--error-color:#ff4d4f}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,sans-serif}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}.flex-center{justify-content:center;align-items:center;display:flex}.input-group{flex-direction:column;gap:8px;width:100%;margin-bottom:24px;display:flex}.input-group label{color:var(--text-secondary);font-size:1.1rem;font-weight:500}.input-group input{background-color:var(--input-bg);border:2px solid var(--input-border);color:var(--text-primary);border-radius:8px;outline:none;width:100%;padding:16px;font-size:1.2rem;transition:border-color .2s}.input-group input:focus{border-color:var(--accent-color)}.btn{background-color:var(--accent-color);color:var(--bg-color);cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:10px;width:100%;padding:16px 24px;font-size:1.2rem;font-weight:600;transition:transform .1s,opacity .2s;display:flex}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.7;cursor:not-allowed}.error-message{color:var(--error-color);text-align:center;margin-bottom:20px;font-weight:500}