:root{--primary-color: #00e676;--bg-dark: #121212;--bg-card: #1e1e1e;--text-light: #e0e0e0;--text-muted: #a0a0a0;--border-color: #333333;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}body{margin:0;font-family:var(--font-family);background-color:var(--bg-dark);color:var(--text-light);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.container{max-width:900px;margin:2rem auto;padding:0 1.5rem}.header{text-align:center;margin-bottom:3rem}.header h1{font-size:2.5rem;font-weight:700;margin-bottom:.5rem;color:var(--text-light);letter-spacing:-.02em}.header p{color:var(--text-muted);font-size:1.1rem}.card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:2rem;box-shadow:0 4px 6px #0000001a}.btn-primary{background-color:var(--primary-color);color:#000;border:none;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;border-radius:6px;cursor:pointer;transition:background-color .2s,transform .1s}.btn-primary:hover{background-color:#00c853}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{background-color:var(--text-muted);cursor:not-allowed;opacity:.7}input[type=text],textarea{width:100%;padding:.75rem;margin-bottom:1rem;background-color:#2a2a2a;border:1px solid var(--border-color);border-radius:6px;color:var(--text-light);font-size:1rem;box-sizing:border-box}input[type=text]:focus,textarea:focus{outline:none;border-color:var(--primary-color)}.success-message{margin-top:1.5rem;padding:1rem;background-color:#00e6761a;border:1px solid var(--primary-color);color:var(--primary-color);border-radius:6px;text-align:center;font-weight:500}