:root{--color-bg:#0a0a0a;--color-surface:#1a1a1a;--color-surface-hover:#252525;--color-primary:#2ecc71;--color-primary-glow:#2ecc7166;--color-accent:#3498db;--color-text:#ecf0f1;--color-text-muted:#95a5a6;--color-border:#333;--font-main:"Inter",-apple-system,BlinkMacSystemFont,sans-serif;--radius-sm:8px;--radius-md:16px;--radius-lg:24px;--shadow-sm:0 2px 8px #0003;--shadow-md:0 8px 24px #0000004d;--shadow-glow:0 0 20px var(--color-primary-glow);--transition:all .3s cubic-bezier(.25,.8,.25,1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--color-bg);color:var(--color-text);font-family:var(--font-main);-webkit-font-smoothing:antialiased;line-height:1.6}a{color:inherit;text-decoration:none}button{cursor:pointer;font-family:inherit}.container{max-width:600px;margin:0 auto;padding:20px}.card{background:var(--color-surface);border-radius:var(--radius-md);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);transition:var(--transition);padding:24px}.card:hover{box-shadow:var(--shadow-md);border-color:var(--color-primary);transform:translateY(-2px)}.btn{border-radius:var(--radius-sm);transition:var(--transition);border:none;justify-content:center;align-items:center;width:100%;padding:12px 24px;font-weight:600;display:inline-flex}.btn-primary{background:var(--color-primary);color:#000;box-shadow:var(--shadow-glow)}.btn-primary:hover{filter:brightness(1.1);transform:scale(1.02)}.input{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);width:100%;color:var(--color-text);transition:var(--transition);padding:12px 16px;font-size:16px}.input:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px var(--color-primary-glow);outline:none}.title-gradient{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-weight:800}@media (max-width:768px){.container,.card{padding:16px}body{font-size:14px}}@media (max-width:480px){h1{font-size:1.5rem}h2{font-size:1.25rem}.btn{padding:10px 20px;font-size:.9rem}}.text-center{text-align:center}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.gap-1{gap:.5rem}.gap-2{gap:1rem}