:root{--color-navy: #0F172A;--color-white: #FFFFFF;--color-accent-yellow: #FACC15;--color-bg-light: #F8FAFC;--color-text-main: #1E293B;--color-text-muted: #64748B;--color-border: #E2E8F0;--color-success: #22C55E;--color-error: #EF4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--color-bg-light);color:var(--color-text-main);line-height:1.6;-webkit-font-smoothing:antialiased}#root{max-width:600px;margin:0 auto;height:100vh;height:100dvh;background-color:var(--color-white);box-shadow:0 0 20px #0000000d;display:flex;flex-direction:column;overflow:hidden}.btn{display:inline-flex;align-items:center;justify-content:center;padding:1rem 1.5rem;border-radius:12px;font-weight:600;font-size:1.1rem;cursor:pointer;transition:all .2s ease;border:none;width:100%;margin-bottom:1rem}.btn:disabled{background-color:#f1f5f9!important;color:#94a3b8!important;border:1px solid #e2e8f0!important;cursor:not-allowed!important;transform:none!important;box-shadow:none!important}.btn-primary{background-color:var(--color-navy);color:var(--color-white)}.btn-primary:hover{background-color:#1e293b;transform:translateY(-2px)}.btn-secondary{background-color:var(--color-bg-light);color:var(--color-navy);border:2px solid var(--color-border)}.btn-secondary:hover{background-color:var(--color-border)}.header{background-color:var(--color-navy);color:var(--color-white);padding:1rem;text-align:center;position:sticky;top:0;z-index:10;box-shadow:0 2px 10px #0000001a;display:flex;align-items:center;justify-content:space-between}.header h1{font-size:1.2rem;font-weight:700;flex:1}.container{padding:1.5rem;flex:1;display:flex;flex-direction:column}.icon-button{background:none;border:none;color:inherit;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:.5rem}.card{background:var(--color-white);border-radius:12px;padding:1.5rem;box-shadow:0 4px 6px #0000000d;border:1px solid var(--color-border);margin-bottom:1rem}