:root{--primary: #2563eb;--primary-hover: #1d4ed8;--text-dark: #1f2937;--text-light: #4b5563;--bg-light: #f9fafb;--white: #ffffff}body{margin:0;font-family:system-ui,-apple-system,sans-serif;background-color:var(--bg-light)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:8px;font-weight:600;text-decoration:none;transition:all .2s;cursor:pointer;border:none;font-size:1rem;box-sizing:border-box;position:relative;overflow:hidden}.btn.primary{background-color:var(--primary);color:var(--white)}.btn.primary:hover{background-color:var(--primary-hover)}.btn.secondary{background-color:var(--white);color:var(--text-dark);border:1px solid #e5e7eb}.btn.secondary:hover{background-color:#f3f4f6}.btn.large{font-size:1.25rem;padding:16px 32px}.btn.full-width{width:100%}.btn:disabled,.btn.disabled{opacity:.9;cursor:wait;pointer-events:none}.btn:disabled:after,.btn.disabled:after{content:"";position:absolute;top:0;left:-100%;width:50%;height:100%;background:linear-gradient(to right,#fff0,#ffffff4d,#fff0);transform:skew(-25deg);animation:shine 1.5s infinite}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-radius:50%;border-top-color:#fff;animation:spin .8s linear infinite;display:inline-block}.auth-page{min-height:90vh;display:flex;justify-content:center;align-items:center;padding:20px}.auth-card{background:var(--white);padding:40px;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a;width:100%;max-width:400px;border:1px solid #e5e7eb}.auth-card .header{text-align:center;margin-bottom:30px}.auth-card .header h1{font-size:1.75rem;margin-bottom:8px}.auth-card .header p{color:var(--text-light)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500}.form-group input{width:100%;padding:10px 12px;border:1px solid #d1d5db;border-radius:6px;box-sizing:border-box}.form-group input:focus{border-color:var(--primary);outline:none}.btn.primary.full-width{width:100%;background:var(--primary);color:#fff;padding:12px;border-radius:8px;font-weight:600;cursor:pointer;border:none}.btn.primary.full-width:hover{background:var(--primary-hover)}