*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #c74634;--color-primary-dark: #a03828;--color-secondary: #1b6ca8;--color-bg: #f8f9fa;--color-surface: #ffffff;--color-text: #1a1a2e;--color-text-muted: #6c757d;--color-border: #dee2e6;--color-success: #198754;--color-danger: #dc3545;--border-radius: 8px;--shadow-sm: 0 1px 3px rgba(0,0,0,.12);--shadow-md: 0 4px 12px rgba(0,0,0,.15);--max-width: 960px;--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono: "Fira Code", "Cascadia Code", monospace}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}a{color:var(--color-secondary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:var(--max-width);margin:0 auto;padding:0 1rem}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1.25rem;border:none;border-radius:var(--border-radius);font-size:.9rem;font-weight:600;cursor:pointer;transition:background .2s,transform .1s}.btn:active{transform:scale(.98)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-secondary);color:#fff}.btn-ghost{background:transparent;color:var(--color-text);border:1px solid var(--color-border)}.btn-danger{background:var(--color-danger);color:#fff}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--shadow-sm)}.form-group{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1rem}label{font-weight:600;font-size:.875rem;color:var(--color-text)}input[type=text],input[type=email],textarea,select{width:100%;padding:.6rem .875rem;border:1px solid var(--color-border);border-radius:var(--border-radius);font-size:1rem;font-family:var(--font-sans);transition:border-color .2s}input:focus,textarea:focus{outline:none;border-color:var(--color-secondary);box-shadow:0 0 0 3px #1b6ca826}textarea{resize:vertical;min-height:160px}.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.badge-admin{background:var(--color-primary);color:#fff}.badge-reader{background:var(--color-secondary);color:#fff}.spinner{display:inline-block;width:2rem;height:2rem;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{display:flex;justify-content:center;align-items:center;min-height:200px}.alert{padding:.875rem 1rem;border-radius:var(--border-radius);margin-bottom:1rem;font-size:.9rem}.alert-error{background:#fff5f5;border:1px solid #fecaca;color:#991b1b}.alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534}