:root{--primary-color: #55c1e6;--accent-color: #003366;--bg-gray: #f5f5f5;--text-dark: #333333;--text-secondary: #666666;--border-radius: 12px}*{-webkit-tap-highlight-color:transparent;box-sizing:border-box}html,body{height:100%;margin:0;font-family:Roboto,sans-serif;background-color:var(--bg-gray);color:var(--text-dark);overscroll-behavior-y:none}.fade-in{animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.main-card{background:#fff;border-radius:var(--border-radius);box-shadow:0 4px 15px #0000000d;overflow:hidden}.btn-primary{background-color:var(--primary-color);color:var(--accent-color);border:none;padding:.75rem 1.5rem;border-radius:var(--border-radius);font-weight:700;cursor:pointer;transition:all .2s}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.material-icons{font-family:Material Icons;font-weight:400;font-style:normal;font-size:24px;line-height:1;letter-spacing:normal;text-transform:none;display:inline-block;white-space:nowrap;word-wrap:normal;direction:ltr;-webkit-font-smoothing:antialiased}